Friction Drive Telescope Mount

Although there are examples of use of even heavier telescopes up to 100kg, the recommended maximum load is about 80kg for this telescope mount when used for imaging. The GM 8 drive system The drive system uses a 2. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. The Event Horizon Telescope (EHT) collects light from the black hole using a small number of telescopes distributed around the Earth. Our goal with AstroTrac 360 was to do the impossible: engineer a full‑size experience into the smallest, lightest telescope mount possible. Springloaded worm assembly for zero backlash: Altitude Drive: Ø120mm bronze worm gear drive. The smooth-moving, sturdy AstroView mount provides a robust equatorial support system for any telescope weighing up to 12 lbs. The Orion Adventures in Astrophotography Bundle lets you take surprisingly detailed pictures of star fields, the Milky Way, or star-trails with a point-and-shoot or DSLR camera (camera not included). Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. The dome that houses the telescope has a diameter of 4. Orient motor so that threaded hole in motor drive mounting plate aligns with the elongated hole near the top of the recess. I picked up an old DS2000 mount for next to nothing. 75") features center-hinged leg braces for quick set-up and take-down and includes a removable high-walled accessory tray to keep telescope eyepieces and. The mount features bearings of small radii and plenty of motor torque to compensate for wind buffeting. The CGX 1400 HD combines Celestron's flagship CGX computerised equatorial mount with their largest EdgeHD optical system. The design of the unique GTD E. A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers. The telescope attaches to the mount via a dovetail bar bolted to the bottom of the telescope. An analysis of friction nonlinearities and a demonstration of the necessity in eliminating static friction are provided. Treat your eyes to a new look at the universe. The first telescope i built was an eq-fork mount - sorry no pictures of it - it was in 1983! It was undriven, though I had plans to add a sector ra drive. This report here describes the study on the friction drive finished in an experiment arranged by LAMOST project. Can be upgraded to absolute encoders & lifetime warranty on the drive. Position feedback comes from low cost incremental encoders, also capstan coupled. Some people like the motor noise a friction drive makes…. Every time I move the mount I must redo it. The combination of the reflex site and low-friction Dobson mount makes for a very intuitive telescope that the kids greatly enjoy using. Friction torque is reactive torque and occurs predominantly in the bearings of axis supports of telescope mount. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support. Celestron’s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. Telescope Mount and Optical Tube Assembly. The field lens and the eye lens are both contained in the telescope's eyepiece. Lightbridge (or any dobsonian rockerbox) upgrades: Click here for info. 6 DRIVE ASSEMBLY 46. When the mount is adjusted, only the beam's angle changes, not its length. 10 of 10 { width: 200, height: 200, defaultImage: '', layers: '' } 1-800-447-1001 Friction bearings. Star testing on a GEM with a video sample and specs will be available soon. Takahashi. the telescope friction clutch - the plate is on the dec axis and presses a friction pad against a DEC disk mounted on the axle. Capturing Planets the Dobsonian Way. Gemini G53F capacity 45 kilograms or Mesu-mount 200 capacity 100 Kgs) What we often read/hear: Gear systems require correct lubrication, friction drive is more wear resistant Very smooth tracking is more important than the low. So we decided to rebuild the two friction wheels (RA and DEC axes) completely and scrap the old ones. In equatorial mode this out-of-balance condition causes the scope to try to swing toward the west. As a result, it’s easy to keep the objects that move on the center point of the eyepiece. The entire drive mechanism is otherwise my design. Most camera tripods will have a 1/4″ adapter plate into which you can screw a scope dovetail mount. the Shane 3-meter. Celestron CGX-L Equatorial Mounted 1100 Schmidt-Cassegrain Telescope 11" Schmidt-Cassegrain Optical Tube Assembly Aluminum Optical Tube Celestron's premium StarBright XLT coatings 2800 mm focal length (f/10) 40mm eyepiece included (70x) Visual back allows use with 1. The following pictures give an impression of this second telescope:. The friction drive on the declination axis was a mistake. I picked up an old DS2000 mount for next to nothing. He used CSF32-160 for RA and CSF20-80 for DE. Exceptional load capacity to weight ratio Additional Aux accessory ports and autoguider port on the Dec axis for better cable management Larger. fric Precision Friction Drive German Equatorial Mount E. By that we mean you need to think about the intended use. An amateur astronomer in Korea made a harmonic drive telescope using machined aluminum. Pressberger (University of Vienna and Purgathofer Observatory, Klosterneuburg, Austria). As such, it is desirable to provide a telescope system which readily accommodates upgrading of the telescope mount from friction lock mounts to manual worm drives and from manual worm drives to motorized worm drives in a manner which is simple, convenient, and comparatively inexpensive. frictionless. An altazimuth telescope's drive rates vary continuously, When driving the mount the motors prefer it if in today's epoch coordinates. In addition, once you find your object, it automatically keeps it in the eyepiece by moving the telescope with a motor. It's styled like a traditional Leica M rangefinder and brings a host of updates to the hugely popular original Leica Q (Typ 116) that was launched in 2015. 25" accessories 9x50 Finder Scope to help accurately. the OTA shown clear of the saddle and fork mount. OK, it won't be actually the first light, but a brief report from a third night (third use case) when I finally managed to handle the setup (cables etc. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. The Mesu-Mount 200 MKII is the improved version of the original Mesu 200. Here we are concerned with the telescope. Since 1988, our clients experience an unmatched customer service. motor, which runs in either direction as desired. • 20" Cassegrain telescope in Kepler observatory Linz (friction wheel drive, largely identical with our own telescope, build 1998-2000) • Mount for 20" Newtonian, built by Michael Mross, Lüneburg Germany (friction wheel drive) • 20" Cassegrain telescope by Erich Kowald, private observatory Posiberg in Styria (friction wheel drive,. I made do with the materials and tools I have, and I'm happy it works! EDIT: It's a bit odd to drive the rotor from the top bearing, but based on my calculations, that force exerted on the drive bearing by the weight of the assembly is about the same as if I had used on of the bottom edge. The present invention is directed to a disc based alt-azimuth telescope mount for use with any of a variety of existing telescopes. Because couple of my friends were happily using Gemini G42+, the predecessor of G53F (F stands for friction drive mount) for even unguided imaging, it was a clear choice which mount will be my final one The choice was sooo easy because you get top-notch performance for half of the costs of e. The mount has two parts, the rocker box and the ground board. Unleash the power of your smartphone to take you on a guided tour of the night sky with no telescope experience required. Capable of carrying Celestron's largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large telescopes, imaging. Telescope structure and kinematics 413 Major Characterisitcs: • M1 – M2 de-space 120 m • Primary mirror diameter 100 m • Rotating mass 16800 tons. The brushless torque motor requires commutation. Unit D Longmont, CO 80501 Phone: 303-678-8143 Fax: 303-772-9411. Kelly Beatty Equatorial Mount Meridian Flip Dec 6 2017 by Larry McNish. Build yourself a working Equatorial Mount for under $50. In particular the mount control system for the giant telescope. In a ideal system with no friction, the torque to maintain 10 m/s and 1000 m/s is the same, but the power required to produce that torque at the higher speed is 100 times more. Please specify your requested options in your payment for the deposit. An equatorial telescope system with direct-drive PMSMs is used as basis for the analysis. Orion U-Mount. Our goal with AstroTrac 360 was to do the impossible: engineer a full‑size experience into the smallest, lightest telescope mount possible. Sometimes I worked intensely on the DIY telescope mount project, and sometimes the project laid untouched for months and months. Equipped with EQ or equatorial mount, it allows you to control the show motions. Mechanical Aspects of the Drive. Lightbridge (or any dobsonian rockerbox) upgrades: Click here for info. GARMIN Portable Friction Mount. The altitude bearing. Smooth acceleration between all drive speeds. I got a lot of ideas when building a 144-servo driven motor mount for the 40-inch primary objective mirror. 25″ EdgeHD telescope and Advanced VX German equatorial mount package; EdgeHD’s aplanatic, flat field Schmidt-Cassegrain optics result in pinpoint stars to the edge of today’s largest imaging sensors and widest eyepieces for best optical performance. New Celestron CGX 14" EdgeHD Telescope. The mount reaches a satellite tracking and positioning speed of 10 deg/sec. The Primary Mirror: At the heart of every reflecting telescope is the primary mirror. The technology normally used in this class of telescope is well understood in the telescope community and has been successfully implemented in numerous projects. The L-Series comes in three models; the L-350 capable of holding 100 lbs; the L-500 designed for the CDK17/20 that can hold payload of over 200 lbs. A Friction-drive Fork Mount by Dave Rowe Nothing is more important for successful astrophotography than the telescope's mount. 25x was the minimum correction speed in v1 model. It features precision roller bearings, Crayford no backlash friction drive and has smooth focusing at high power with 8:1 fine focus. A belt driven motor minimizes backlash but remains smooth even when handling a large telescope. But you can make your telescope less vulnerable to this fact. with an average positioning accuracy <20 "and a tracking accuracy of about 1"/15 min. Fine pointing actuation is from direct drive dc motors, eliminating backlash problems. loosening the bolt to free the OTA, 4. Alternatively, if manual clutches have been installed along with the drive motors, you can revert to using the manual slow motion controls at any time. At one point, I thought about using something like this to drive my telescope mount. My first logbook entry mentioning the reconstruction of the Drive was back in 2003, over six years ago. Do you want to be able to locate over. The altitude and azimuth axes are supported and located by hydrostatic bearings. Telescope mount features dual slow-motion controls and 360-degree azimuth adjustment, for easy manual tracking of celestial objects for extensive viewing Adjustable-height tripod (32. This is a known fact that worm and gear have low mechanical yield because of friction. Add a wedge to turn the alt/az form. The GTD MoFoD MKII Fork Friction Drive Mount is the ideal solution for demanding applications (public, school, society or professional observatories). Mirror cells, upper cage assemblies etc. Alt-Az mount with Equatorial tracking: Weight Mount Head (with topmount and arms) 16 kg: Materials: Black Anodized Aluminium Stainless Steel: Azimuth Drive: Ø100mm bronze worm gear drive combined with second stage friction roller gear. altitude axis and the azimuth axis This is achieved by using is provided by the rotating base. In the case of the Shane 3-meter, though it is in prinicple possible to observe via internet link from a remote location, observers invariably come to Mount Hamilton to carry. The Feathertouch focuser with two speed 1:1 and 1:10 reduction and compression rings in both the drawtube and adapter is a $390 option. Both of these terms refer to the tripod your telescope sits on. If you’re shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. Metal circles We can cut metal circles. * Mount and Wedge. This component, more than any other, determines a telescope's characteristics; the primary's diameter often giving the telescope it's name, e. The mount is designed to carry 100 kg (this is enough for a 500 mm catadioptric or a 200 mm refractor). It’s available in two variations:. With the trend towards bigger and bigger aperture of the optical telescopes, there are some reports about friction drive employed to drive the telescopes. Using a friction drive at the end of a ~26 cm arm (the. Noisy overnight, especially with the use of stepper motors that can resonate with the telescope mount. Ultra-Light Conversions. This motor moves the telescope at the same speed as the terrestrial objects moving in the sky. inside the fork) (actually it is singly inboard). I accomplished this by purchasing three standard 3/8-inch diameter by 1-inch long course thread bolts, with washers, from Home Depot. The design of this unique product is based on the following important concepts. This model has an exceptionally large image circle of 80mm diameter. With an optical tube assembly weighing only 28 lbs. The telescopes are usually balanced; such that you just need enough torque to get the scope moving. ) and right ascension (r. Gemini G53F capacity 45 kilograms or Mesu-mount 200 capacity 100 Kgs) What we often read/hear: Gear systems require correct lubrication, friction drive is more wear resistant Very smooth tracking is more important than the low. Experiment study on friction drive. Mesu Mount 200 was purchased new by me in October 2017 and has been a solid piece of equipment. extensively equipped - including 2", 30mm 'overview' eyepiece, 8x50 finder scope and 9mm super Ploessl eyepiece. It boasts some key feature distinctions which make it stand out from the crowd. You are depending upon gravity to actually drive the scope, and the friction in the system makes this a very “iffy” thing. This is a great telescope to have as you utilize its dual axis Teflon bearings and its altitude tension clutch. Even at high magnifications, you can move the rockerbox mount around quickly and easily to point at any target in the night sky!. 5 pounds for us backwards. However, astronomical telescope is a large inertia load. A Mount for deepsky imaging without the needs of meridian flip. Full text of "MSFC Skylab Apollo Telescope Mount" See other formats. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. The generic failure mechanism has been discussed ad nauseam on the pages of MAPUG (2) and many other internet-based telescope user groups, and stems from the use of tiny plastic components and encoders in the gearbox, whizzing around at up to 14,000 RPM, to slew heavy telescopes on a mount originally intended for 20cm aperture tubes. Since the construction consists of optimised RK standard products, the monitor mounting, including all installation options, is economical and available in no time. For an explanation of image detectability, go to my Visual Detection designer. 5 arcsec/seconde. General Specifications. A belt drive connects the 55 tooth gear to a 12 tooth gear on the stepper motor. The balancing doesn't need to be exact, the friction in the platform prevents it from rotating freely. Mount is also Ed's fork mount improvement inspiration I will add more "boxing" to my unboxed fork seen at edhiker. Heavy Duty belt-drive system minimizes backlash while providing smooth motor operation under heavy loads. The Alt-azimuth mount is commonly used in affordable telescopes because it’s easy to use. the mount which is caused by inaccuracy of of worm. The GM 8 drive system The drive system uses a 2. Notice that the mount as delivered was not correct. 6) Place motor drive into recess. 2 YOKE BASE 31 6. At the heart of the LighTrack is the precision motor and the friction drive. If I choose the other way with timing belt I have seen a kit cost about 190 Euro, is this old mount worth it?. Mechanical Aspects of the Drive. Slightly more difficult fix:. Offers compatibility with telescopes that have RS-232 serial interfaces, as well as with more recent Meade USB-only telescopes. Get answers to your questions in our photography forums. Since 1988, our clients experience an unmatched customer service. This system is renowned for high precision and reliability. However, the ultra-lower speed and the giant moment of inertia make the mount drive of the telescope very difficult to be controlled. Attach the included EQ-3M Telescope Drive's precision mini-motor onto the AstroView EQ Mount to track celestial objects automatically. Offered in Alt-Az or Equatorial configuration. 44 Nm and 13. Hub motors are everywhere, the basis for 95% of modern ebikes. The mount comes with several patented features and a flexible modern control. 5 arc seconds in 5 minutes, +/- 5. SDP/SI - Stock Drive Products / Sterling Instrument provides small mechanical components, engineering and manufacturing services for industrial and commercial applications. It is the most lightweight and portable of the three size models. A sidereal-rate drive assembly for an astronomical telescope which includes a worm gear for rotating the telescope about its polar axis and which is engaged by a motor driven worm. • 20“ Cassegrain telescope in Kepler observatory Linz (friction wheel drive, largely identical with our own telescope, build 1998-2000) • Mount for 20“ Newtonian, built by Michael Mross, Lüneburg Germany (friction wheel drive) • 20“ Cassegrain telescope by Erich Kowald, private observatory Posiberg in Styria (friction wheel drive,. For an explanation of image detectability, go to my Visual Detection designer. Most of the details and dimensions, however, were redesigned. The amazing unguided tracking accuracy of the LighTrack is in its own league. Subscribe now! When you sign-up to be on our e-Newsletters, you will begin to receive our newsletter which contains exclusive promotions, news, updates and many more. The generic failure mechanism has been discussed ad nauseam on the pages of MAPUG (2) and many other internet-based telescope user groups, and stems from the use of tiny plastic components and encoders in the gearbox, whizzing around at up to 14,000 RPM, to slew heavy telescopes on a mount originally intended for 20cm aperture tubes. The control system is built aroun. Figure 2-1. These are coupled by friction to large diameter drive disks on each axis. Observing with a research telescope now takes place in a warm, well lighted room, adjacent to the telescope, or even by remote connection at another location altogether. This brake is a high-torque, zero backlash device. Stay tuned with Gemini Telescope Design. A Mount for deepsky imaging without the needs of meridian flip. In this paper, the principle and characteristics of friction drive is analyzed. 75" at the upper bearing and 4" at the lower bearing. This report here describes the study on the friction drive finished in an experiment arranged by LAMOST project. The mount comes with several patented features and a flexible modern control. fric Friction Drive Mount. The Questar mount is unique in that it uses a form of roller friction drive on both axis. , it is a backlash‐free friction drive of a horseshoe structure. Very impressive! EdgeHD is an aplanatic, flat field Schmidt-Cassegrain telescope that produces aberration-free images across a wide visual and photographic field of view. Equatorial mounts tend to be massive (less portable), expensive, complicated, and have the characteristics of putting the eyepiece of Newtonian telescopes in very hard to access positions. An altazimuth telescope's drive rates vary continuously, When driving the mount the motors prefer it if in today's epoch coordinates. This will ensure that the mount does not move suddenly while attaching the telescope. Perhaps with different optics, the unit might become acceptable. The best model of this buying guide is the Celestron NexStar 1100 HD Deluxe. The planetary reduction drive is based on an classic but ingenious design. The TRIDENT Telescope Mount is a servo powered (kinematic) friction drive mount. Focal Length: 5695mm (approximately f/7) Operational Hour Angle from -5. Our main profile is the design and manufacturing of telescope mounts and accessories. Since the project was proposed more study on a number of key issues relevant to the control system has been conducted. Every time I move the mount I must redo it. 4") diameter 18 mm thick plywood disk with the following add-ons: Three 32 mm track rollers on which the drive board will rotate, positioned exactly above three 76 mm (3") diameter feet. Its main profile is the design and manufacturing of telescope mounts and drivers. 25" accessories 9x50 Finder Scope to help accurately. The mounts drive system uses Gemini Telescopes well proven friction drive system which results in very low PE, zero backlash and dependable operation. With the plastic cover removed, I was able to mount the Meade adapter directly to the metal structure of the telescope’s mount and drive assembly. All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. I use a CG-5, Celestron's equivalent to the Eq5 for a 6" refractor which is OK on calm nights but with even a fairly moderate breeze I can't use high powers with it. All you have to do is attach your camera to the Orion EQ-1 Equatorial mount and tripod with the included 1/4"-20 threaded adapter, then align the. But it is quite easy to star hop with the 9'x12' fov of the ccd camera. Mesu Mount 200 was purchased new by me in October 2017 and has been a solid piece of equipment. Order today from Ontario Telescope and Accessories. • Locked rotor frequency 1. Diy Telescope Hubble Space Telescope Refracting Telescope 3d Printing News Whirlpool Galaxy Andromeda Galaxy 3d Prints Stargazing Android Autoscope: This is fully 3d printed and remotely accessible telescope. Hopkins in Arizona. This fork arm also contains a 7. The dome that houses the telescope has a diameter of 4. Even at high magnifications, you can move the rockerbox mount around quickly and easily to point at any target in the night sky!. The telescope's friction drive system allows backlash-free control of its altitude-over-azimuth mount. There is a coupler for a stepper motor to a 5/16 threaded rod. The telescope mount is an equatorial fork with friction roller drives. Lightbridge (or any dobsonian rockerbox) upgrades: Click here for info. This is the best position for setting up the telescope on top of it. diameter friction drive in DEC contribute to the stiffness that helps promote smooth tracking and excellent accuracy. This allows the mount to be adjusted to accommodate large changes in eyepiece (or camera) weights. AstroTrac 360 Single Arm Mount Package. Orion IntelliScope Computerized Object Locator. A belt driven motor minimizes backlash but remains smooth even when handling a large telescope. From Figure 1, one can see that the instrumental pole for friction drive consisting of a large diameter disk and a small diameter drive roller provides the stiffest form of gearing. A direct-drive system is composed of a threaded rod pressed against the rim of a large drive circle. Pressberger (University of Vienna and Purgathofer Observatory, Klosterneuburg, Austria). Equatorial mounts tend to be massive (less portable), expensive, complicated, and have the characteristics of putting the eyepiece of Newtonian telescopes in very hard to access positions. Offered in Alt-Az or Equatorial configuration. mesu-optics. Our mount started as a replica of Gregorz Pojmański's instrument for all‐sky monitoring (Pojmański 1997), who kindly shared his plans with our group. 75" at the upper bearing and 4" at the lower bearing. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. All-new ergonomic adjustment knobs with reduced friction for smooth and easy positioning under full loads. Positive locking ratchet pawl brake. From the Factory the friction drive is adjusted fairly tight meaning the mount can only be turned by the internal motors. Move the tube to the edge so that an approximate location of the centre of gravity is found. Friction torque is reactive torque and occurs predominantly in the bearings of axis supports of telescope mount. But the concept for the telescope's alt-az mount is the same as your scope. DobSTUFF Workshop. has some flex along RA. The following pictures give an impression of this second telescope:. When the Mesu-Mount 200 was originally released it shipped with a ServoCat mount controller for basic operation and an Argo Navis Digital Telescope Computer hand controller to add full Go-To functionality. A 10” telescope offers an upgrade from an 8” of nearly 50% extra light gathering power, meaning brighter images, better resolution and greater colour saturation. uk or Telephone: 01782 614200. Telescope Mount and Optical Tube Assembly. Our main profile is the design and manufacturing of telescope mounts and accessories. I recently won an Alvan Clark 3 inch telescope on an auction site. Notice that the mount as delivered was not correct. DEC rate = 3. Since the construction consists of optimised RK standard products, the monitor mounting, including all installation options, is economical and available in no time. Product Title Celestron Telescope Astrophotography T-Adapter - 1-1 Average rating: 4. Internal cabling for worry-free remote operation. On the first night I messed up polar alignment because I did not purchase the polar scope (I was too cheap and did not want to spend. Each axis has two identical drive motors coupled to the telescope through steel friction rollers. , it is a backlash‐free friction drive of a horseshoe structure. This is the point in space that the first axis rotates about. See more ideas about Astronomy, Telescope and Stargazing. I mount the cow magnet in a holder which holds the magnet 90 degrees to the boom about 12" down the boom from the damping magnet. to connect TDM to the. Most telescope mount uses a set of spur gears to reduce motor speed and then a worm wheel for the final reduction. Custom Optics and Telescopes. A pressure plate bolted to the flywheel exerts constant force, by means of a diaphragm spring, on the driven plate. Spring engaged, air released servo motor brakes mount to the shaft end of servo motors up to 20 horsepower. On the left, the computers that control the telescope and the CCD camera can be seen. I noticed that yours is friction driven with the motor drive! does it track easily w/no slip? I've been trying to figure out a way to drive mine. During this time I have learned a great deal about the genius of the Clarks, in particular George Basset Clark, whom I believe is responsible for the design of our 8¼-inch telescope’s mount and drive systems. The Event Horizon Telescope (EHT) collects light from the black hole using a small number of telescopes distributed around the Earth. At the heart of the LighTrack is the precision motor and the friction drive. The coil is also on the floor in a holder set parallel, 2-inches to the left, of the 40" long, 3/4 x 3/4 square, solid aluminum boom and the cow magnet. 10 of 10 { width: 200, height: 200, defaultImage: '', layers: '' } 1-800-447-1001 Friction bearings. and SCIENTIFIC AMERICAN 187 TINSLEY LABORATORIES Supplies for the Amateur Telescope Maker. This took me a few months to build, the brake rotor idea is from ScopeX in South Af. The mount is based on a friction drive system which is very stiff and efficient, find more Typically telescope structures are stiffer than the drive. Detailed photos of the controller, the mount, as well as astrophotographs taken with it are in the link. TNW is one of the world’s largest online publications that delivers an international perspective on the latest news about Internet technology, business and culture. This has advantages. This is a NEW BYERS 11-1/8" diameter -- 442-tooth Telescope Drive, With Spring-Loaded Slip-Clutch, Bored To Fit A 3. Geometry: A 7:1 "gear" reduction final drive for a telescope using a final drive pulley of 20-inches in diameter and a drive pulley of 2. 1 arcsec/seconde. Unleash the power of your smartphone to take you on a guided tour of the night sky with no telescope experience required. At one point, I thought about using something like this to drive my telescope mount. "Choosing Your First Telescope" with J. 1 YOKE DESIGN 29 6. The patented Tension Control Handle allows users to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboards. the OTA shown clear of the saddle and fork mount. However, astronomical telescope is a large inertia load. Celestron’s engineering team applied their years of experience designing German Equatorial mounts to the all-new CGX EQ, a culmination of all the advancements made to our technologies, value, and ease-of-use. (full step) and track at 0. MOFOD Fork Mount is the ideal solution for demanding astronomy applications (public, school, society or professional observatories). The sturdy equatorial telescope mount and adjustable tripod features fine manual adjustment for tracking and focusing on celestial objects. FORNAX LighTrack Mark II. Tension can be adjusted in both axes, and because of the solid aluminum build quality, the U-Mount can hold an incredible amount of weight. tilted to access the OTA restraining bolt, 3. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use. At the heart of the LighTrack is the precision motor and the friction drive. In fact, wonder of wonders, it weighs only 3. 75") features center-hinged leg braces for quick set-up and take-down and includes a removable high-walled accessory tray to keep telescope eyepieces and. AstroTrac 360 Single Arm Mount Package. txt) or read online for free. diameter friction drive in DEC contribute to the stiffness that helps promote smooth tracking and excellent accuracy. The yoke mount solves this by placing the telescope between two forks, but this prevents the telescope from being pointed at stars close. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. loosening the bolt to free the OTA, 4. 2 DRIVE REQUIREMENTS 23 5. Build yourself a working Equatorial Mount for under $50. Rigid dobsonian mounts offer large bearing surfaces to attach drives. When I get around to it, I will replace it with a gear drive. Usually a tripod with a head containing manual or motorised controls, which point the. With the trend towards bigger and bigger aperture of the optical telescopes, there are some reports about friction drive employed to drive the telescopes. Friction drives are rare. all the weight of the telescope is inboard (ie. the mount which is caused by inaccuracy of of worm. All you have to do is attach your camera to the Orion EQ-1 Equatorial mount and tripod with the included 1/4"-20 threaded adapter, then align the. fric Friction Drive Mount. The low-friction pads permit smooth, precise tilting, or rocking of the optical tube. The planetary reduction drive is based on an classic but ingenious design. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium. For my application, I already have a 100:1 harmonic drive, and I'm looking to add a 10:1 friction drive stage, for a mount capable of carrying a telescope around 30kg. It includes an AC powered synchronous clock drive motor and declination clamp. There is a coupler for a stepper motor to a 5/16 threaded rod. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. The three pads of carpet help prevent vibration from the drive motor exciting the telescope. Friction will be reduced to about one-third of the original friction. For an explanation of image detectability, go to my Visual Detection designer. For information or advice call 020 8763 9953 or email [email protected] Rigid dobsonian mounts offer large bearing surfaces to attach drives. Product Title Celestron Telescope Astrophotography T-Adapter - 1-1 Average rating: 4. The friction drives also allow you to move the telescope around by hand without unlocking any clutches. Buy more powerful motors which can overcome the friction associated with the weight of the telescope. fric offers the utmost precision available from a pure friction drive without the need for expensive and vulnerable encoders and electronics. The 30 in. The new AstroTrac 360's advanced friction drives and optical encoders deliver even better-unguided tracking performance than the AstroTrac TT320X-AG. $\endgroup$ – Olin Lathrop Apr 19 '16 at 21:46. It could shape and figure the mirror in real time. As with most newly developed devices, it was expected that there would be some teething problems. The lens is attached to a black PVC toilet mount flange with a plumbing squeeze clamp exactly for that purpose; miraculously, the enlarger lens was just a little smaller than. Build yourself a working Equatorial Mount for under $50. Star testing on a GEM with a video sample and specs will be available soon. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. In fact, wonder of wonders, it weighs only 3. First no tools assembly, no tools primary collimation. Truss Telescopes. It goes without saying that the mount drive control is the key technique which affects the telescope’s resolution and speed mostly. Mesu Mount 200 was purchased new by me in October 2017 and has been a solid piece of equipment. Product Title Celestron Telescope Astrophotography T-Adapter - 1-1 Average rating: 4. no need for counterweights. The telescope mount is an equatorial fork with friction roller drives. A 10” telescope offers an upgrade from an 8” of nearly 50% extra light gathering power, meaning brighter images, better resolution and greater colour saturation. Perfect for viewing the night sky, you won't believe the depth and clarity you will see. The latitude of this mount was designed for Tucson, Az, but the user could make a wedge plate to accomodate a different location. Choose from a range of mount designs and mounting mechanisms. If there is too much friction, the telescope is difficult to move to center an object in the filed of view. Marine Navigation Box Telescope, Compass, Spirit Level, Alidade Etc For Sale Online. Most telescope mount uses a set of spur gears to reduce motor speed and then a worm wheel for the final reduction. But it is quite easy to star hop with the 9'x12' fov of the ccd camera. When the Mesu-Mount 200 was originally released it shipped with a ServoCat mount controller for basic operation and an Argo Navis Digital Telescope Computer hand controller to add full Go-To functionality. it was mainly designed by open space agency under open hardware licence as ultrascope plus. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use, operated locally or remote. The first telescope i built was an eq-fork mount - sorry no pictures of it - it was in 1983! It was undriven, though I had plans to add a sector ra drive. Polar Drive The polar drive (left) incorporates the finest components available. 96 Nm in the declination (dec. The English mount or yoke mount addresses a problem with the fork mount: the fork itself still experiences an unbalanced load from the telescope, which means the base of the fork must be of heavy construction. It was then mounted on a machined piece of angle iron with adjustments to square the drive-wheel onto the ring. Without the right telescope mounts, it's difficult to get the best performance from even the best-rated telescopes. Mobile Tracking Mount for Astrophotography At the heart of the LighTrack is the precision motor and the friction drive. It can acquire and track Low Earth Orbit Satellites; and with a maximum slew speed of 20 degrees. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. diameter friction drive in RA and 28 in. Direct drive telescope mounts are not a new idea, and are commonly found on professional observatory telescopes and very expensive high-end telescope mounts. This is a NEW BYERS 11-1/8" diameter -- 442-tooth Telescope Drive, With Spring-Loaded Slip-Clutch, Bored To Fit A 3. 96 Nm in the declination (dec. Helpful Resources: Unboxing Video (Backyard Astronomy on YouTube) Celestron CGX-L Equatorial Mount and Tripod – Product Video from Celestron; In March 2019, I took the Celestron CGX-L for a test drive on the Leo Triplet (Click for video). This allows the mount to be adjusted to accommodate large changes in eyepiece (or camera) weights. Expert news, reviews and videos of the latest digital cameras, lenses, accessories, and phones. It’s possible to configure mount set-ups for visual observations, for long exposure astrophotography, several telescopes in parallel or ultra compact travel set-up. The Celestron CGX-L Telescope Mount is Available at High Point Scientific. Treat your eyes to a new look at the universe. The coil is also on the floor in a holder set parallel, 2-inches to the left, of the 40" long, 3/4 x 3/4 square, solid aluminum boom and the cow magnet. A good example is my 30-inch Cassegrain mount which has a 20" Byers drive in RA, with it's worm mounted in ball-type bearings, which I was surprised to find when I purchased it. The polar and equatorial disks are driven by 1:24 and 1:32 rollers, respectively, through 1:180 worm gears and servo motors. The positive side effect: we can also turn the required encoder mountings directly on the new friction wheels. The brushless torque motor requires commutation. Another consideration when choosing a telescope is the mount – the part the optical tube assembly sits on. [SOLD] Mesu 200 Friction drive mount IceTrade Archives. Specs: Mount. Two pins prevent rotation of the friction pad. When using a TDM (Telescope Drive Master), this can be reduced to below +/-0. The Alt-azimuth mount is commonly used in affordable telescopes because it’s easy to use. And not only is it compact - it's more accurate than ever. Its main profile is the design and manufacturing of telescope mounts and drivers. System performance matched to mount and motors selected. The rod end needs to be tapped since it has no threads (my modeling skills are up to making threads yet). A Mount for deepsky imaging without the needs of meridian flip. I've tried opening the thing up and increasing the tension of the friction wheel against the hub, but that didn't seem to help. The mounts drive system uses Gemini Telescopes well proven friction drive system which results in very low PE, zero backlash and dependable operation. Telescope Drive. Nov 14, 2018 - Friction Fork Mount MOFOD is the ideal solution for public, school, society or professional observatories. Low friction is achieved by balanced profile displacements for equal lengths of approach path and recess. 000-inch shaft diameter. The newly enhanced Mesu e200 Mount is a high capacity, innovative and well priced friction drive mount, benefitting from a precise and mature design. Attach the Orion EQ-3M Dual-Axis Electronic Telescope Drive to a compatible Orion or Celestron equatorial mount and you can track celestial objects automatically, without needing to touch. We point telescope on very popular target M1, the Crab Nebula in the constellation of Taurus. We are serving amateur and professional astronomers worldwide. This is used mainly for dob owners using a friction drive. Climbing Everest? - just take the one. The technology normally used in this class of telescope is well understood in the telescope community and has been successfully implemented in numerous projects. com, since 1966. Please note that these specifications are sub-ject to change without notice and stated for the Losmandy GM 8 mount with the standard accessories. Using a friction drive at the end of a ~26 cm arm (the. If you’re shooting with a 400 mm camera lens or a small telescope, leave the counterweights at home. Since that time, many more astro-imagers and planetarium controlled setups have emerged as backyard telescope technology has evolved. Three design requirements received special attention: (1) a fast slewing telescope mount, (2) a CCD camera with a high quantum efficiency image sensor, and (3) a simpler optical design. The TNT motor drive system includes adjustable speeds on both axes, high speed centering and one-touch re-positioning of the altitude tangent arm. Astro-Physics mounts or Paramount (range starting. This thesis describes the servo control system which was developed to control the motion of the telescope. The Advanced Polaris Telescope Mount has slow motion RA and DEC controls for manual control. 1 Setting the telescope elevation angle 39 6. The telescope itself was dusty and wet, but the mount was in a good shape, just the driver electronics for the motor were missing. Horseshoe equatorial mount for a 12. These are coupled by friction to large diameter drive disks on each axis. Direct drive telescope mounts are not a new idea, and are commonly found on professional observatory telescopes and very expensive high-end telescope mounts. Buy more powerful motors which can overcome the friction associated with the weight of the telescope. Since the tube is screwed to the Rockerbox (mount), this is one of the most stable Dobson available. The planetary reduction drive is based on an classic but ingenious design. with an average positioning accuracy <20 "and a tracking accuracy of about 1"/15 min. This took me a few months to build, the brake rotor idea is from ScopeX in South Af. This brake is a high-torque, zero backlash device. Stationary latitude knob with a newly-designed linkage system greatly reduces the amount of friction when polar aligning the mount. ProClip USA Inc, is the exclusive North American distributor of ProClip vehicle-specific mounts for dashboards and headrests, and device-specific holders, cradles and docks for mobile devices, such as smartphones, tablets, GPS navigation systems, satellite radios, handheld mobile computers, barcode scanners and two-way radios. Disturbances Applied to Axis of Telescope Installed on the Deck of a Ship - Free download as PDF File (. The telescope must be in balance first ! Starting with the RA axis: Lock the DEC clutch and loosen the RA clutch, hold the telescope it can move away fast !. This took me a few months to build, the brake rotor idea is from ScopeX in South Af. The mount is the actual tripod and the wedge is the device that lets you attach the telescope to the mount. Description Customized model with four large 10" all-terrain pneumatic wheels and a tow handle. The telescope attaches to the mount via a dovetail bar bolted to the bottom of the telescope. The design of the worm support structure and large diameter precision tapered conical worm bearings result in a drive system with uncommon torsional rigidity, making the GM2000 particularly adept at handling long refractors. Approach with extreme caution, and audition carefully before buying. It could shape and figure the mirror in real time. Up to 2" OD, 2" length, name the custom bore. This system is renowned for high precision and reliability. Celestron’s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. The brushless torque motor requires commutation. Capturing pin sharp stars at 200 mm or more focal length has never been. PULSAR GoTo Controllers. 45 arcsec/step (micro stepping) Both telescope axes must include a friction clutch for manual positioning; Isolate the drive mechanics from the GEM with a Sorbothane vibration dampening material. to connect TDM to the. Alt-Az mount with Equatorial tracking: Weight Mount Head (with topmount and arms) 16 kg: Materials: Black Anodized Aluminium Stainless Steel: Azimuth Drive: Ø100mm bronze worm gear drive combined with second stage friction roller gear. GARMIN Portable Friction Mount from Currys PC World. A Friction-drive Fork Mount by Dave Rowe Nothing is more important for successful astrophotography than the telescope's mount. Type: Polarizing. Here we are concerned with the telescope. In the ad for the telescope was a small note that said "Inquire for details of convenient Time-Payment Plan. 3 TABLE 32 6. Note the other dovetail just below the center of the fork (above main picture) for easily separating (dismantling) the entire solid-block polished titanium fork assembly from the lower RA mount assembly. Getting ready for the solar eclipse in my own backyard! I wanted a sidereal tracking mount for my camera that is fitted out with a homemade solar filter using Baader solar film Baader Planetarium AstroSolar Safety Film Visual, 7. So, is it possible for an amateur telescope maker to construct a wooden mount suitable for long exposure astrophotography? The answer is definitely yes. The mathematical model of the LAMOST telescope mount drive control system is established and the fuzzy sliding mode control theory is put forward to contrast with traditional PID control and ordinary sliding mode control, which is realized by Matlab/simulink simulation. Get answers to your questions in our photography forums. Visual PE is not apparent even at high magnification using our mount, gears, worm mounting, electronics and software. 6 new & refurbished from $225. Astrosib telescopes are renowned for their excellent optics. and SCIENTIFIC AMERICAN 187 TINSLEY LABORATORIES Supplies for the Amateur Telescope Maker. The project was started some years ago with no particular target date in mind. , it is a backlash‐free friction drive of a horseshoe structure. The yoke mount solves this by placing the telescope between two forks, but this prevents the telescope from being pointed at stars close. * Mount and Wedge. Ending Feb 23 at 12:36PM PST. This system is renowned for high precision and reliability. SDP/SI - Stock Drive Products / Sterling Instrument provides small mechanical components, engineering and manufacturing services for industrial and commercial applications. the telescope is easier to adjust overall and is more forgiving of slight adjustment errors. Be sure the telescope adapter is tightly fastened to avoid flexure at the camera or eyepiece. 25" accessories 9x50 Finder Scope to help accurately. Sometimes I worked intensely on the DIY telescope mount project, and sometimes the project laid untouched for months and months. ) and master polar alignment of this new friction drive mount made by Gemini Telescope Design in Hungary. Mechanical Aspects of the Drive. Motor assembly. However, the ultra-lower speed and the giant moment of inertia make the mount drive of the telescope very difficult to be controlled. Orion IntelliScope Computerized Object Locator. Using a friction drive at the end of a ~26 cm arm (the. Celestron CGX-L 9. Direct drive telescope mounts are not a new idea, and are commonly found on professional observatory telescopes and very expensive high-end telescope mounts. The rubber friction face provides. 25x was the minimum correction speed in v1 model. Based on our Friction Drive System (without gears) is the perfect solution for amateur or professional astrophotographers working in the field and for small to medium observatory use, operated locally or remote. The L-Series comes in three models; the L-350 capable of holding 100 lbs; the L-500 designed for the CDK17/20 that can hold payload of over 200 lbs. Description. * Mount and Wedge. • 20“ Cassegrain telescope in Kepler observatory Linz (friction wheel drive, largely identical with our own telescope, build 1998-2000) • Mount for 20“ Newtonian, built by Michael Mross, Lüneburg Germany (friction wheel drive) • 20“ Cassegrain telescope by Erich Kowald, private observatory Posiberg in Styria (friction wheel drive,. This single-axis motor drive will make observing easier and more fun, since you won't have to hassle with periodically centering an object in your telescope eyepiece's field-of-view. Be sure the telescope adapter is tightly fastened to avoid flexure at the camera or eyepiece. Here is a picture of the original as it was delivered. A masterpiece of engineering and workmanship, JMI Standard Event Horizon Telescope Focuser – Cassegrain is a low-profile, friction-drive focuser designed for both the amateur and professional telescope market. With the plastic cover removed, I was able to mount the Meade adapter directly to the metal structure of the telescope’s mount and drive assembly. For mounting the telescope mount head to the tripod, I will use the same friction plate casting but with a 5/8-11 thread in the center and 1/4-20 counterbored clearance holes on the 6 bolt pattern. Astrosib telescopes are renowned for their excellent optics. During this time I have learned a great deal about the genius of the Clarks, in particular George Basset Clark, whom I believe is responsible for the design of our 8¼-inch telescope’s mount and drive systems. All that is needed is to adjust the mount to accommodate for the telescope configuration, and forget it. A Friction-drive Fork Mount by Dave Rowe Nothing is more important for successful astrophotography than the telescope's mount. Motorized drives are standard on many telescopes today or can be purchased separately and installed on any type of telescope mount today - equatorial, altazimuth and even Dobsionian mounts. Sooner or later an upgrade was going to happen. 405 New Meadow RdBarrington RI 02806 USA Questions? Contact us at:[email protected] The L-600 is ideal for the CDK24 and can hold up to 300 lbs. There are a few exceptions of overpriced/underperforming mounts, but once you get over $10k for a mount (you did ask for the BEST), just look for the most expensive. The detection of a contemporaneous optical flash from GRB 990123 prompted a thorough reevaluation of our ROTSE‐II development program. The world-wide shipping cost is $55 via surface and $95. PULSAR GoTo Controllers. The Leica Q2 is an impressively capable fixed-lens, full-frame camera with a 47MP sensor and a sharp, stabilized 28mm F1. MOFOD Friction Drive Fork Mount. However, you need a good solid tripod to carry the weight and take into account the axes of movement of the telescope if you want to use it for observing planets and the like. The Telescope Drive Master v2 has arrived!!! 0. 000-inch shaft diameter. By the time I added the off axis guider, the filter wheel, focuser, and finally a camera on the scope I lost a lot of sky due to everything hanging off the back. Star Adventurer Astronomy Mount. 2 DRIVE REQUIREMENTS 23 5. Our goal with AstroTrac 360 was to do the impossible: engineer a full‑size experience into the smallest, lightest telescope mount possible. Lightbridge (or any dobsonian rockerbox) upgrades: Click here for info. the ¼ Hitch Mounts advertised elsewhere on this site also use a roller friction drive system. Typical features include:. Celestron's newly designed CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. The dome that houses the telescope has a diameter of 4. Depending on the telescope being used on the mount, there are different assecories available to make the mount complete. Gilles Gagnon converted an Astro-Physics AP400 mount to OnStep, using the MiniPCB board, and NEMA11 motors. Astronomical telescopes have standard eyepiece tubes, with which one can use eyepieces bought separately from the telescope. Indeed, the mount was the best part of the scope. Capable of carrying Celestron’s largest optical tubes with ease, CGX-L is designed for backyard observatories and remote imagers looking for exceptional load capacity to weight ratio, compact design, and innovative features that fully support large. Each Orion telescope solar filter includes three equidistant thumbscrews, 4x 1/16" thick adhesive foam tabs, and 4x 1/8" thick adhesive foam tabs for customized friction fit to your telescope; Note: All Orion solar filters are designed for use with an adequate friction fit attachment. The CGX 1400 HD combines Celestron's flagship CGX computerised equatorial mount with their largest EdgeHD optical system. With a little practice, objects can be kept in the eyepiece for 10 minutes or more. Slipage prevented by water-resistant sand-paper (grain size 600) on driving roller. (Sometimes I think it also does duty as some kind of Star Wars laser weapon. 5 pixels (0. Key Features. "Choosing Your First Telescope" with J. A drive is the electronic device that harnesses and controls the electrical. 4" (20x29cm) and a pin-camera aiming sight. capacity hand winch is easy-to-mount and ideal for mobile use on pickup trucks and trailers. Before you attach the optical tube, make sure that the declination and right ascension clutch knobs are tight. Also problems can occur when using a poncet mount: when the azimuth bearings have to much friction, it will be possible that the drive sector slides over the driveroller when moving the telescope in azimuth. Three Astrophotography Tracking Mounts but systems are also available to mount DSLR cameras and lenses up to 500 mm in focal length. Redesigned azimuth adjustment with low-friction Teflon bearings to make adjustments easy under full load. A shortened mount profile creates a more compact mount that is easier to carry and assemble but also improves the mounts central gravity boosting load capacity. An altazimuth telescope's drive rates vary continuously, When driving the mount the motors prefer it if in today's epoch coordinates. Mount the tube on the declination shaft and secure the declination shaft in a horizontal position. Celestron’s workhorse CGEM mount lineup has been the German Equatorial backbone for telescopes ranging from 6 to 11 inches of aperture. The first test we made with a 30-cm f4 telescope on G53F Friction Drive Mount was used, ASI1600MM-Cool and L filter. , this telescope is still portable enough to be taken to dark skies, and has 89% more light gathering power than an 8" telescope and 40% more than the 9. Celestron's CGX-L Computerized Equatorial mount is the latest addition to our fully computerized equatorial mount series. AstroTrac 360 punches above its weight at just 5 kg (11 lb) in GEM configuration. I mount the cow magnet in a holder which holds the magnet 90 degrees to the boom about 12" down the boom from the damping magnet. Positive locking ratchet pawl brake. The English mount or yoke mount addresses a problem with the fork mount: the fork itself still experiences an unbalanced load from the telescope, which means the base of the fork must be of heavy construction. Full text of "MSFC Skylab Apollo Telescope Mount" See other formats. inside the fork) (actually it is singly inboard). extensively equipped - including 2", 30mm 'overview' eyepiece, 8x50 finder scope and 9mm super Ploessl eyepiece. The highly acclaimed Crayford design (see below) permits tolerances up to 100 times better than conventional rack-and-pinion focusers. [SOLD] Mesu 200 Friction drive mount IceTrade Archives. GARMIN Portable Friction Mount. Note the other dovetail just below the center of the fork (above main picture) for easily separating (dismantling) the entire solid-block polished titanium fork assembly from the lower RA mount assembly. If the D2M Motor Drive Set is installed, and installation is simple, the included DD2 hand controller is normally used to slew the mount and aim the telescope. 5 GROUNDBASE 44 6. The worm gear fits over the end of a polar shaft, and it and the end of the polar housing are grooved to form ball bearing races. The Advanced Polaris Telescope Mount has slow motion RA and DEC controls for manual control. diameter friction drive in RA and 28 in. ball-bearing horizontal adjustment, allowing easy pointing at and tracking of objects. A Friction-drive Fork Mount by Dave Rowe Nothing is more important for successful astrophotography than the telescope's mount. This is a known fact that worm and gear have low mechanical yield because of friction. We are serving amateur and professional astronomers worldwide. 5" matched Byers drive on a friction clutch. With the plastic cover removed, I was able to mount the Meade adapter directly to the metal structure of the telescope’s mount and drive assembly. Safety clutches are mounted in both axes to prevent damage to the drive system or the OTA. The Orion TrueTrack DC drive system provides dual-axis control for high-power viewing and photography with the SkyView Pro mount. Telescope Mount: Convert from tangent arm drive to friction drive: 1. The focuser is driven by the friction that results when a great amount of pressure is applied by the drive shaft against the drawtube, which in turn is pressed against the drawtube post bearings. uk or Telephone: 01782 614200. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. The friction drives also allow you to move the telescope around by hand without unlocking any clutches. Drive torques are applied by DC servo-driven capstans. 5 arc seconds. Heavy Duty belt-drive system minimizes backlash while providing smooth motor operation under heavy loads. Stay safe and healthy. One of the things that has taken up more of my time has been volunteering up at the Mount Lemmon Sky Center (MLSC). 2 optical design; Rare-earth glass for images free of false color, coma, and field curvature; 43. This system is renowned for high precision and reliability. AstroTrac 360 Single Arm Mount Package.
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