Dobsonian mount bearings. Altitude circle on west side bearing (pointed north) $350.

Dobsonian mount bearings The first think I considered was a large (equatorial) wedge to support the existing dobsonian mount but I reckoned that the angle would be so steep that the The box contains the collapsed assembled telescope and Dobsonian mount, a red dot finder, (a zero magnification pointing tool that superimposes a small red dot on the night sky), two 1-1/4” generic eyepieces, Dobsonian mount mods - posted in Reflectors: I have a Discovery 10 DHQ Dob. Dobsonians and Tabletop Dobs can be almost rock-steady, reducing wobble and vibrations. By Daz Type-R September 5, 2011 in Discussions - Mounts. 5 Tube width: 8. Obsession relied on tapered altitude bearings to centre the scope in that axis as it moves and again the side pull of a servocat can often cause azimuth Dob mount with brakes? - posted in Mounts: I have an old Meade DS-10 f/4. This oustanding innovation allows the user to keep their scope assembled into two major sections, which allows for quicker assembly in the field as compared with other similar Truss-Dobsonian designs. The movement in both axes of this telescope is very good, there is always room for small improvement. I have read through The Zhumell Mega Mod post. Altitude circle on west side bearing (pointed north) $350. carriage bolts which pass through the 2 × 4 frame on the North and South sides. Dobs' Alt pivot is super low in the Dob structure, by comparison. CorrecTension Altitude Bearing. Smooth out your telescope movement with virgin PTFE bearings. 0" and larger. Standard 18" bearings. Rather, the 200mmaperture-and-larger StellaLyra Dobsonians use a needle roller-bearing sandwiched between two 32-centimetre-diameter metal-bearing plates. But this seemingly simple fact involves a number of subtle design issues. Just wanted to share a DIY modification of the azimuth bearings in my Guan Sheng (GSO) 200C Dobsonian Altazimuth mount. But astrophotographers really need to track the state. The bearings are simply Teflon strips, and the construction is made of wood or particle board. Hence the bearings that allow the telescope to aim in altitude are the altitude bearings. In other words, the ground board is shaped like a large, shallow "V" where the scope's azimuth bearing is About the Dobsonian Mount in Skywatcher 8″ Dob. Members; 2,645 4,093 Hack 43. The Apertura AD6 is a Newtonian reflecting telescope, a common design characteristic of most Dobsonians with a parabolic primary mirror to focus light onto a flat secondary, which in turn forms an image at the eyepiece. Base There are endless variations for building Dobsonian style, Alt-Azimuth mounts. Use Ebony Star and Teflon for butter-smooth motions. scopes on Dobsonian mounts enjoy enormous popularity mainly because they are sim-ple to use and inexpensive to build or buy. Page 1 of 2 - Forced to make my own dobsonian mount. The bearings hold the telescope in place until you push hard enough to make it move. Dobson Skywatcher 200/1200mm Skyliner Flextube AT. The Explore Scientific 10” Hybrid Dobsonian offers more aperture, A good dob bearing will stay put when you want it too but move smoothly without jerking when needed. $348. need to build a lightweight dobsonian mount and also install altitude bearings on the OTA. Custom and standard Dobsonian Mounts, Mirror Cells, Clamshell Rings, Altitude Bearings and more. We can help you make your new Dobsonian telescope project a success. This equipment includes Dobsonian mount is the equatorial platform. Something similar to Bresser 150 or Heritage 150p tabletop mount (single A Dobsonian Telescope is a optically a Newtonian Reflector mounted on a Alt-Az mount with a low and stable center of gravity and Teflon-Laminate bearings. And that ones probably on an equatorial mount. Standard 18" bearings For Dobsonian mounts. But these simple side The Apertura AD series is based on a Newtonian reflector optical tube on a Dobsonian mount. the finder scope & 2 the rotation bearing in the base (or the lack of one) which makes it so hard to nudge smoothly, I have tried adjusting the central bolt and putting some silicone on the sliders but with no real improvement. A more sophisticated version of the GEM might use a set of self-aligning ball bearings mounted in pillow blocks in place of 1. The measurements are as close to mark as possible and are as follows : Tube length: 42. Nylon screws through outer rings (top Custom and standard Dobsonian Mounts, Mirror Cells, Clamshell Rings, Altitude Bearings and more. These platforms are slightly tilted plates mounted on offset bearings which permit them to swivel through an arc appropriate to cause the telescope to move equatorially. 10" SCT on a Dobsonian Mount? - posted in Cats & Casses: Im thinking about mounting a 10 SCT (or similar) on a Dobson mount and wondering if that will work for planetary and DSO visual? Large diameter bearings are Page 1 of 3 - Friction for Large/Small Altitude Dob Bearings - posted in ATM, Optics and DIY Forum: With so many home made dobs in the past, Ive used altitude bearings riding on various Teflon/laminate surfaces. DIY motorized Dobsonian - posted in Mounts: I need some advice. Roller bearing for dobsonian altitude bearing - posted in ATM, Optics and DIY Forum: I am making a Dobsonian mount for a 20 inch mirror. $391. The altitude needs some attention now. $427. It was popularized by John Dobson of the San Francisco Sidewalk Astronomers, who is also an honorary member of the Springfield Telescope Makers. Current sources for dobsonian bearing materials? - posted in ATM, Optics and DIY Forum: Hi everyone I am new to this forum and relatively new to the astronomy hobby. The rotating ring spins freely inside the clamshell rings. I am having some difficulties moving the telescope around its azimuth axis. The Dobsonian mount offers easy and intuitive navigation, allowing for smooth tracking and precise object location. Sorry if this is in the wrong section. Dobsonian smooth AZ: lazy Suzan + Teflon Brakes - posted in Mounts: Perhaps a perfect compromise for a smooth AZ movement: Lazy Susan + Adjustable Teflon brakes. 7 kg) and costs around $450, offering a robust and smooth mount for stability and tracking performance. SCT's pivot around the Alt (Dec) bearings mounted near the ends of the forks. I'm very much into astronomy and telescopes, and ive used an 8" scope with 24" alt bearings and it had great movement. I spent my summer vacation building a 150mm f5 Newtonian telescope on a dob mount. Page 1 of 2 - Heavy Dobsonian: Azimuthal bearing - posted in ATM, Optics and DIY Forum: Im building my first telescope, an 8 f/10 Dobsonian. Recommended Posts. "version b" doesn't have this and requires the dovetail to be removed) 2 Dob mount wheels. Page 1 of 3 - Is the eq platform as wonderful as the Dobsonian mount? - posted in Reflectors: Decades ago, 4-10 Newtonians rode on eq mounts. I fitted a 12 inch bearing to my diy dob a couple of weeks ago. I made some modifications to the Altitude Bearings Small 5" bearing upgrades. A Dobsonian’s rockerbox is composed of a rocker-box that holds the altitude bearings, resting on top of a simplified lazy-susan to move around. Sky Watcher Altitude Bearing Solution. slightly better bearings that can be adjusted for balance, and a 2” low-power, wide-angle 30mm eyepiece instead of a 1. Dob Mount Plans - posted in ATM, Optics and DIY Forum: Hi, everyone ! I recently received a homemade 6 Newtonian reflector and I need to build a dobsonian mount for it. The Apertura AD8 Dobsonian 8" Telescope with Accessories is a fantastic choice for beginners and experienced astronomers. I need plans for making a simple Dobsonian mount - posted in ATM, Optics and DIY Forum: Hello my friends. Detail of flat black Dob base for OTA with rings and dovetail - posted in Mounts: This is just a question from idle curiosity on a cloudy Friday night (Im not actually looking for such a thing): Are there any commercially available Dobsonian bases that are designed for an OTA with rings and a dovetail plate? Ive never seen one, but it seems like there could be people who have Newts on When mounting your side bearings, make sure this screw and washer is mounted at the top when your telescope is pointed at 45 degrees above the horizon ("X"--in the illustration at right)--this insures that they will not interfere with your Teflon bearing surfaces. RS-KMCRLB: Kit, clamshell rings, 18" altitude bearings. 5″ factory installed altitude bearings and want larger ones without the need for making new cutouts in the For Dobsonian mounts. To move in azimuth (side to side) the Dobsonian uses more plastic on three Teflon pads. Our additional services: We are a leading telescope dealer and know the devices we sell. Since the scope was now out of balance, we moved the altitude bearings. NGC 1502. On the top side, it supports the Teflon pads for the Altitude Bearings, and on its bottom side, it has laminate and a pivot bolt hole for the Azimuth Bearing. (This would become very problematic if you tried to put a normalish Dob on a wedge). Every part we manufacture for our own telescopes is now available to you. But also just a positive sidenote: A (heavy wooden) Dobsonian mount is much more solid and often far less prone to vibrations than EQ mounts! Potential Problems. 5" Dob using 1/2" Ply) Tube Box. The idea is to replace the bearing surfaces (the spots where the rocker box rubs on Hi allI am making a base for a relative's 6" newt and as I love dobs so much, it had to be a dob base!I made it from stuff I had in the shed (a bit of 18mm ply and a table top for the sides - knew it would come in handy one day). See the "Step-by-Step" thread here in the Equipment Forum's ATM section for some of RECOMMENDED BUY FOR THE DOBSONIAN MOUNT. Assembly is quick and easy, advice if requested. A drill with assorted bits is a vital tool for this process. Additional roller bearings and pivot bearings facilitate handling. Like all Dobsonians, the Apertura AD10 is an alt-azimuth-mounted instrument. Page 1 of 2 - Improving Dobsonian base movement - posted in Reflectors: Im becoming increasingly unhappy with the movement of my dob base. The Dobsonian mount is simply placed on top of the platform. Use a lazy susan bearing for AZ axis and use flange bearings for Alt axis. I am primarily interested in visual astronomy, but don’t want to eliminate the possibility of astrophotography. " one of the things I was worried about was the base on the dobsonian but I found something that works perfectly, it's called a lazy Susan bearing and can hold 450kgs. Our Aluminum Altitude Bearings are shipped un-drilled and un-anodized, allowing you to make any drilling templates and color choices you desire. Several years ago, we added a new focusing mount and a finder. RS-FM: Finished, Reducing dobsonian bearing friction - posted in ATM, Optics and DIY Forum: Hello: I put together the dobsonian that Ive been working on (glacially), and noticed that the motion in elevation is quite heavy. I have a 114/900 newtonian from celestron on a less than great azimuthal fork mount that I got on clearance last year for a screaming deal. The scope rotates horizontally on one Hello - I'm new to this thread. I got a router, jigsaw , mitre saw and a table saw at home, plus I'm fairly competent with them so this part shouldn't be much of a problem. I hope it For Dobsonian mounts. People recommend the Dobsonian mounted reflector because of the characteristics of the mount. 5 (or so) 10 Newtonian, about 45 years old. buymeacoff The Rocker Box is a major structural component of a Dobsonian Mount. Plus 1/ The most important disadvantage of a dobsonian mount is that the telescope doesn't follow the stars, or, more exactly stated: a dobsonian mount does not compensate for the rotation of our planet. I have considered greasing the bearing but I am hesitating, pending any comments on the forum. Superior to original base is several ways - larger altitude bearings means it is easier to move and balance and it is made Please consider Patreon or Channel Membership: https://www. 36. I want a simple alt/az dob mount that I can just plop it down on and look. 5" diameter bearings (28-30" scopes) $600/pr. Supplied with fully multicoated 1. The XX12i has 3 Teflon pads on the top side of the ground board and a ring of EbonyStar on the under side of the other board or upper 1/2 of the azimuth bearing . Metal plates above and below the bearings prevent them from sinking into the softer wood (no divots!), so the movement remains smooth, even after years of use. Apertura Roller Bearing Kit for AD Dobsonians. The rollers run evenly between two steel plates, providing smooth azimuth (left-right) Page 1 of 2 - Dobsonian mount azimuth bearing stiction - posted in Reflectors: I have an Orion XX12i Dob and one of the challenges of using the telescope is stiction on the azimuth bearing. For Equatorial Standard 12" bearings. Page 6 Eyepiece Focuser Telescope Altitude Tube Bearing Locking Bolt Dobsonian Mount Star Hopper 6 and 8 ® Page 7: Glossary Poor collimation results in visual aberrations and distorted images. How can I build a Dobsonian mount - posted in Mounts: Just the kicking the idea around this morning about possibly building a Dobsonian mount for my Cave 10 f/5. The Sky-Watcher 10” Classic uses a pretty bog-standard Dobsonian mount made out of particle board. Unless you have an adjustable balance point like ShaulaB mentions, it is difficult to reposition the altitude bearings on the tube to correct balance issues. All kits contain 3 azimuth and 4 altitude bearing pads of 3/16" (0. My Orion XX12i mount had some stiction associated with the azimuth bearing that Paula's 10" Dobsonian Mount - posted in ATM, Optics and DIY Forum: Hi All, Im relatively new to the forums. I am thinking about building a dobsonian mount for A Dobsonian telescope on display at Stellafane in the early 1980s. The older (pre-2003) designs of the Orion dobsonian mounts used a bearing system called "CorrecTension Friction Optimization" which was comprised of Teflon (non-stick) bearings, and a spring mechanism to apply vertical/downward pressure against the bearing to create more friction (see original intruction manual and first picture below). telescope techniques Better Dobsonian Bearings Is the well-known magic combination of Teflon and Ebony Star really the best for scanning the skies?By Martin Lewis 122 October 2003 Sky & Telescope The author is seen here with “Fossil Light,” his 18-inch truss-tube GSO/Zhumell/Apertura Dobsonian Alt/Az Bearings - posted in Reflectors: I recently purchased a Zhumell Z8. bores. The base assembly is outfitted with Sky-Watcher's proprietary Tension Control Handle to increase or decrease friction between the optical tube and sideboards. Dobsonian Mounts Standard solid. This intuitive design makes Dobsonians particularly user-friendly for beginners. This is a solid tube design made of rigid steel sheet. I started out on the Classic Telescope pages. Balance and alignment are critical; you must check and adjust them at the mounting points. Well if you used soap at least you would know that your surfaces were being cleaned. 5 Primary mirror: 6 Side bearing: 4 3/4 Side bearing to bottom of tube: 14 If anyone Altitude Bearings Small 5" bearing upgrades. The factory mounts seem to be sold out. So why not make one! I’ve of course read articles and looked at plans and have some ideas. My current plan is to cut two circular disks and put some kind of lazy susan bearings between them to create the Az mount, put three small feet on Mount. Dobsonian mount azimuth bearings diy - posted in Reflectors: I need another mount for my AD10 to make trips back and forth easier. 5; Focuser: 2 inch dual speed Micro 10:1 Smooth, stable Dobsonian mount with Azimuth tension adjustment, four slot eyepiece holder and front carry-handle Robust roller-bearing assembly provides smooth, reliable azimuth adjustments. And ever since then I have been trying to figure out how to smooth out the motion of this scope. Requires sanding, paint or finish, gluing bearing on laminate and assembly. Dobsonian telescope mounts move in altitude and azimuth on friction bearings. The side panel bearing material consisted of free floor laminate samples which provided a smooth surface to accommodate the Sky Watcher OTA altitude bearings. This allows the telescope to be moved in any direction with very little effort. For Dobsonian mounts. What ever that property is called, Moonshane / Shane put just the right amount of it into the dob mount that he built for me This is true of both the Dobsonian mounted reflector and refractors mounted on Berry-style, counterbalanced, offset . 92 ; Limiting Stellar Magnitude: 14. It Featuring Teflon bearings for smooth slewing and a patented tension control to lock on the target of your observation, this Sky-Watcher 8" Collapsible Dobsonian Base makes it easy to aim your compatible optical tube assembly. ALTITUDE BEARINGS . The Dobsonian mount is the distinctive feature of this telescope design. The motion of the mount is great. Sky-Watcher 8 weighs 50 lbs (22. The advantages to such platforms include Altitude Bearings Small 5" bearing upgrades. The assembly of a Dobsonian telescope involves various hole sizes for screws, dowels, and other connectors. " Don M. My idea was to buy the altitude bearings / trunnions StellaLyra Roller Bearing for Dobsonian Telescopes 8" to 16" Aperture. GUSSETS, BRACES & FEET . Often referred to as ‘light buckets’, Dobsonians provide users with the highest possible aperture for their money when compared to telescopes of a similar size, such as Schmidt-Cassegrains or refractors. Mostly the altitude bearing diameters have been quite large in relation to the optical tubes and somewhat more than 150 percent of the diameters of the The One True Beginner Telescope Mount—Dobsonians. I have the 130m Skywatcher but am less than impressed with the cheap EQ mount, I was thinking of making a Dobsonian mount for it. The key component of a Dobsonian Mount is its bearings - they should be "buttery smooth", moving without a startup 'jerk' and holding the telescope position when no pressure is applied. Hardware (All M3): 1x 16mm 1x 25mm 5x 30mm 6x nuts 2x wingnuts/thumb A robust roller-bearing assembly provides smooth, reliable azimuth adjustments. Roller ball bearings are too fast and do not provide any "stiction" for proper smooth Altitude Bearings Small 5" bearing upgrades. 00 plus shipping. Here is a side profile of the bearing, which is 8mm high, and results in the top base A returning hobbyist's first Dobsonian mount - posted in ATM, Optics and DIY Forum: Ive shown a few pictures of this project in other forums, but I thought Id document the construction more fully here. (Though expensive computerized Dobs which can do so do exist). Specifics: For 10" outside diameter optical tube. Are Teflon sliding surfaces fine? For bearing material either virgin-grade Teflon (aka PTFE), or Seaboard/Starboard (which is often pebbly and must be sanded smooth) It is calibrated to turn an equatorial mount so it is already set. This is for Dobsonian mounts like the GSO or Zhumell. There is a variable in the software preferences called "hysteresis" to compensate gears clearance when direction of rotation Dobsonian mount for 8" F5? - posted in ATM, Optics and DIY Forum: Hello, recently I bought an 8 F5 newtonian from my uncle. 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. We will also use a few more specialized items for bearings (Teflon pads and textured laminate) and will provide details on where to buy these items at the appropriate time. Ive made some modifications to the azimuth bearing and got that pretty nice now. The best examples combine smooth, controllable movement AstroGoods is now offering a Dobsonian Bearing Upgrade Kit for Dobsonian telescope owners who have small 5″ or 5. What alternative do i have ? I will use pvc pipe as optical tube, 6 inch diameter about 40 inches long. I picked up a used skywatcher 200p dob this week - tried it tonight and the two things I really do not like are 1. A full description of how to collimate your telescope follows on pages 12 - 14. The aluminium that my Orion Optics Dob mount is constructed from has a hard pebbly finish and works well. TRUSS CLAMPS . Comments & Photos Updated 11/19/24 : Higher Power Custom Solid Mounts 12" altitude bearings. Nah. Mirror clip mask $30. It is an “Altitude-Azimuth” or “Up, Down, and All Around” mount. total weight could be around 12 To hold the optical tube in place, traditional Dobsonian mounts rely on friction between the side bearings on the optical tube and a frictional material within the saddle. and adapt accordingly to connect your rings to the side boards/bearing and rocker cradle. The rollers run evenly between two steel plates, providing smooth azimuth (left-right) movement. Basically, I understand that what I Lazy susan bearing on a dob mount. I have gone down the traditional route and hopefully the pics speak To ensure ease of movement, the telescope and box are connected via sliding and rotating bearings. 7-3/4" Square. It is loosely based on TopherThemes 18 inch on this site: https://www. Standard Apertura/GSO. It cannot be set up to track the sky automatically. The telescope has a smaller 203mm primary mirror and a shorter 1000mm focal length compared to the AD8. Comments & Photos Updated 11/19/24 : About our mounts Sections below include: Mount Choices If your tube needs altitude bearings, or you wish to upgrade to larger altitude Dob mount basics and the notion of "bearings" - posted in ATM, Optics and DIY Forum: Im a noob in Dob design although Im an engineer (mostly electrical) but I understand that its a very simple mechanism and it can be implemented in a various ways. STEEL NEEDLE BEARINGS: Proprietary steel needle bearings ensure smooth azimuth movement. Comments & Photos Updated 11/19/24 : Premium Mirror Cells For 6 " to 13. For the altitude bearings, I think a pair of V notched sides lined with some teflon would work - the wheels then only contact at 2 points. If you are in need of a replacement roller-bearing for your Apertura AD Dobsonian mount, then look no further! This roller bearing kit comes complete with a plastic roller-bearing disc I have a 10” dobsonian (Meade). They are exceedingly cheap to manufacture compared to any other mount that is Standard on all Truss-Dobsonians 12. Build a mount with 18mm plywood or MDF. Altitude Bearings Small 5" bearing upgrades. 25" 9mm and 25mm Plössl eyepiece The Sky-Watcher 12” FlexTube uses a Dobsonian mount of the same design as the other Sky-Watcher manual Dobsonians. In between, we try to build a light yet rigid box structure to connect it all together. The azimuth bearing To reduce the friction of the azimuth bearings, more then one option has been tried out by atm-ers. . 152K subscribers in the telescopes community. AstroSystems PTFE Bearing Kits. Since the Dobsonian is an alt-azimuth mount the tube does not rotate about its axis, so the same edge of the mirror is always at the bottom, where the sling is attached. I just de-half-forked this one. Dobson's telescopes featured a simplified mechanical design that was easy to manufacture from readily In this section we will show you how to build a Dobsonian Mount for a small (12 inches or less primary mirror) Newtonian optical tube. For DIY and Conversion of Dobsonian Telescopes. 1" primary mirrors. For Equatorial mounts. SC-FM: Finished, use your altitude bearings. Here is a shot of the bearing mounted and screwed into position:-New Spacing Washers Required. com/user?u=85055123Or you can show your support with a coffee here: https://www. In stock form, the alt and az motion is either sticky or too free (dependent on adjustment of tension knobs). SC-KMCRLB: Kit, clamshell rings, 18" altitude Page 1 of 2 - Laminate for azimuth bearing on dobsonian mount? - posted in ATM, Optics and DIY Forum: Ive seen quite a bit of discussion on this, and I want to make sure I get the right stuff. The telescope swings side-to-side (in the direction known as azimuth) on a trio of small plastic pads riding against the body’s melamine coating, and pivots up and down on plastic bearings gliding on Teflon pads, though to simplify Dobsonian Mount - posted in Beginners Forum (No Astrophotography): Hi, I want to know how comfortable the dobsonian mount is. Comments & Photos Updated 11/19/24 : Higher Power Custom Collapsible Mounts clamshell rings, 12" altitude bearings. (Talking fork-mounted SCTs that can get mounted on a wedge). Posted 2010-Nov-05. OEMs are welcome to contact us for production quantities. There are two double altitude bearings, one on each side of the telescope tube or mirror box. Pads of a low-friction material support a rotating base in azimuth and two large side rings that rotate in alti-tude. Designed custom to specifically match your mirror specifications for optimal performance. Standard 12" bearings. the stops prevent it from coming off the bearings and the Dob azimuth brake is able to cope with maximum tilt. 3x rule just makes a nice, neat bearing that does not overhang the back of the mirror box (when placed at a 30* angle) with the truss clamps on the outside of the box. Comments & Photos Updated 11/19/24 : Standard Solid Mounts Features and materials. They can be true works of art, built by wood working craftsmen or just functional designs which get the job done. This will make the construction a bit more complicated however: de 90 degree angle of the bearing mounting-blocks has to be exactly 90 degrees in Your Dobsonian mount is light years ahead of what I put together when I ditched the clunky old German Equatorial. Dobsonian Mount. Featuring large apertures and easy functionality, Sky-Watcher’s Classic Dobsonian is the ideal beginner scope. Thanks so much, this it the perfect height for me. Devel bearing for dobsonian mount - posted in ATM, Optics and DIY Forum: I am making a 114mm 900FL reflector, and a dobsonian base. $406. For tension in the bearing surfaces, most depend The basic Dobsonian Mount has 3 main components, described next from the ground up (see Figure 1 below): A Rotating Platform, or “foot ? (the Azimuth bearing) A Rocker Box that sits on the foot and cradles the tube box described next A Tube Box fitted with circular side support bearings (the Altitude bearings) that holds the scope’s OTA and Page 2 of 2 - Dobsonian mount azimuth bearing stiction - posted in Reflectors: Ive noticed it, but have no solution. Masking the clips on your primary will improve star images by Instead of rollerskate bearings other ball- or needle bearings can be used of course. Thanks The “Dobsonian” part of a Dobsonian is really the mount and tube design. Any suggestions for improvement would be great. Clamshell & Rotating Rings For Dobsonian mounts. AstroGoods 12-inch bearing mounts on existing the altitude bearing and ride outside your mount’s side-walls on a support bracket with Teflon pads. The tube is a sonotube. Also be aware of our Sawing, Sky-Watcher 8 presents a strong alternative with its Quattro-style Dobsonian mount featuring ball bearings. They are mounted on 1/2-in. As it turns out, Amazon is absolutely horrible at shipping products that come in two boxes. Dobsonian mount with Teflon bearings; It not only matters which telescope you buy but also where you buy it. 52" diameter bearings (1 meter scope) $1100/pr. If you have a Dobsonian-mounted scope of your own, then you're familiar with the situation. big bearings make the scope stay put without fooling with counterweights all night long. I recently acquired this somewhat old 8 inch starhopper on a dobsonian mount. Collimation cap - a tool for aligning the optics in a telescope. the ring and teflon pads with Turtle Wax original car paste wax which is the only wax that works properly on dob bearings. 3. I have a very light 11 ¼” mirror and want to take advantage of its weight (5 The tube assembly with its circular bearing simply sits in a low-friction cradle at the top of the mount and is held in place by a spring on each side. The optical tube assembly features a bright They used full circle altitude bearings, and nicely decorated the tube and mount. These suggested sizes will accommodate most telescopes. The telescope pivots up and down on two side bearings attached to the tube and swivels sideways by spinning the top part of the base against the bottom part. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation. This will make the construction a bit more complicated however: de 90 degree angle of the bearing mounting-blocks has to be exactly 90 degrees in Learn how to build a Dobsonian equatorial platform for your telescope with this comprehensive guide. The undersized, cylindrical bearings ride on plastic cylinders, with bicycle Mount without bearings on an equatorial head, or with bearings on a Dobsonian mount. This is my first Dobsonian base, but certainly not my first foray into making things. Its a 10 sky Watcher collapsible dob. 25” 25mm Plossl or wide-angle design. This eliminates the need and added the cost of clumsy counterweight systems to Orion UK Dobsonian mount for Newtonian telescopes with 150mm aperture. The altitude bearings are attached to the rocker box and support the OTA, enabling it to move up and down. This Classic 250P 10" Traditional Dobsonian Telescope Kit from Sky-Watcher is simple to operate, yet provides great views of some of the most beautiful and exciting objects in the night sky. I used to have some wetwall running on A plywood panel screwed onto the bottom provides a platform for the drive system and further reinforces the frame by preventing it from skewing out of square. 19") minimum thickness virgin PTFE, pre-drilled and countersunk, with stainless steel mounting screws. Glue part#31 into the hole using Devcon Plastic Welder. No other wax has the right properties. patreon. Facebook; Twitter; Youtube; Lazy susan bearing on a dob mount. Since each scope comes with different ring configuration, so building Featuring Teflon bearings for smooth slewing and a patented tension control to lock on the target of your observation, this Sky-Watcher 10" Traditional Dobsonian Base makes it easy to aim your compatible optical tube assembly. In diy terms they seem a relatively simple thing to make. Attachment of the alt bearings to the OTA is an important thing to decide on. The scope pivots vertically from horizon to zenith on these altitude bearings, one of which is shown in Figure 3-30. diameter sealed ball bearing units with 1/2-in. The difference is that the AD10 uses bearings more in common with a Like our traditional Dobsonians, the new Collapsible Dobsonians feature Sky-Watcher’s patented tension adjustment control on the altitude bearings. The OTA is still reasonably good, so Im toying with the idea of building a rocker box Dob mount out of plywood -- nothing fancy. Ive noticed a common difference in the production scopes like mine and the top A Dobsonian Telescope is a optically a Newtonian Reflector mounted on a Alt-Az mount with a low and stable center of gravity and Teflon-Laminate bearings. All kits contain 3 azimuth and 4 altitude bearing pads of 3/16" minimum thickness virgin PTFE (Teflon), pre-drilled and countersunk, with stainless steel mounting screws. The bearings are 1 in. The Dob is simpler to buildthat's one reason why it's so popular. Add height to The Optical Tube. Comments & Photos Updated 11/19/24 : Height Adjustment Stands Customer photos/comments "Fit like a glove, firm and no wiggle. c=topphers build However, I only have a mini mill. A Dob mount is a simple thing, very easy to get right or wrong when building. 42" diameter bearings (32-36" scopes) $850/pr. Posted October 12, 2016. Comments & Photos Updated 11/19/24 : Mirror Masks. A Dobsonian Mount is a version of an "Alt-Az" (Altitude-Azimuth) mount. The altitude adjustment is a little better after balancing the scope but I feel it could be better. I am making a Dobsion string telescope based on the authors design in the book String Telescopes. The equatorial is more complicated, but still not out of the question even for those with just basic tools. As shown at left, the scope can be transported or stored ready for use in this configuration. 2. With its splendid 8-inch aperture, this telescope gathers abundant light, revealing stunning views of celestial objects. SC-FMSB: Sticky Dobsonian Mount. Though standard within many Dobsonians on the market today, this design has proven to make centering objects within the eyepiece difficult, as too much friction makes Planning an az mount for a 10" dobsonian on top of an eq platform, what are your experiences with bearing types, locking mechanisms, motorizing, etc. To complete the mount: Print: 1 Dob mount (the original v2 or v3 with added alt bearing depth) 1 Dob mount bottom 1 Dob mount clamp ("version a" has a notch to keep the dovetail in tact. I did a few quick designs on CAD but found that to get the eyepiece at a reasobale height the mount would have to be too tall an The bearings sit on Teflon pads, the bottom bearing sits on six Teflon pads. There is a standard adjustment knob so you can adjust it if you find your target drifting. And they were heavy and hard to set up. Posted March 5, 2021. By sophiecentaur October 12, 2016 in Discussions - Mounts. The original GEM mount (in pieces somewhere) was a low-rise tripod on casters, with a motor drive that died long ago. I have read many posts claiming that using milk jugwashers tend to alleviate this problem to some degree. 12" and 6" masks shown. I have read the use of teflon as bearing but it is very expensive and i dont think is available in my country. I wanted the tube to be supprted in the half so that the Mount without bearings on an equatorial head, or with bearings on a Dobsonian mount. The scope pivots vertically from horizon to zenith on these altitude bearings For Dobsonian mounts. The home to all amateur astronomers & telescopes! Feel free to discuss anything For Dobsonian mounts. Carbon Fibre Truss Dobsonian mount with tension clutch control: Finderscope: Right Angled, 8x50 To ensure ease of movement, the telescope and box are connected via sliding and rotating bearings. $459. 00. I am in the need of a Dobsonian mount for the 6 reflector Im making. After the scope is pointed to a particular object and when it moves away due to the earths rotation, how to do the minute adjustment. Then Dobson invented the Dobsonian mount, paving the way for easier bigger aperture. Unlike most budget Dobsonians, the azimuth bearing is not simply a base board with a central bolt and three pieces of slippery Teflon gliding against the underside of the mount. Contact. Like the azimuth bearing, you align the Teflon pads perfectly and secure them with Replacing a Damaged Dobsonian Mount November 4, 2021 Introduction I recently purchased a used Sky Watcher 8” classic Dobsonian telescope. Another ingenious invention by John Dobson! The cut-outs in the Altitude Axis/Bearing for tabletop dobsonian mount - single arm - posted in ATM, Optics and DIY Forum: Im thinking of building a tabletop mount for C8. Go-to mounts dont rotate the tube, and These telescope parts are available to assist the Amateur Telescope Maker. sophiecentaur. The telescope tube is attached to a pair of altitude bearings or trunnions with some kind of plastic surface on them, which glides against Teflon plastic for smooth up-and-down motion. This necessitated moving the primary mirror closer to the secondary and shortening the tube by a couple of inches. Comments & Photos Updated 11/19/24 : Mirror clip mask Eliminates flaring. Orion UK Dobsonian mount for Newtonian telescopes with 150mm aperture. They seem like a perfect solution for Dobsonian mounts like mine that aren't the smoothest on the azimuth movements. 6", 8" and 10" examples with acrylic retaining ring eliminating mirror clip intrusion in I seen someone mention these on their Dobsonian mount, and never having heard of them before I was naturally intrigued. Right now Getting Your Bearings Dobsonian mounts use simple friction bearings. SC-KMCRLB: Kit, clamshell rings, 18" altitude bearings. Dobson Skywatcher 200/1200mm . Mount Design: Dobsonian clutch mounting with tension knobs; Focal Length: 1250mm; Focal Ratio: f/4. Gonna paint it black. google. This is the movable azimuthal bearing of the alt-azm mount. that is the simplicity of a Dobsonian mount. Many people also call these the Side Bearings, as they are located on either side of the tube, attached to the cradle on small Dobsonians or to the mirror box on larger, truss tube Today the Dobsonian mounting prevails. The trouble is, at this size, the bearings do get pretty What to replace a dobsonian mount with? - posted in Mounts: Hello friends, Three months ago I bought a Sky-Watcher 8 Dobsonian. the 1. Nylon screws through outer rings (top hole in right photo) tightens against the inner ring to preferred friction or locking rotation. Altitude Bearing. Comments & Photos Updated 11/19/24 : Integrated height adjustment stand Features, construction, materials, etc. I want to leave one at each of two places I go back and forth between. Like you, Im all ears. The dobsonian mount of the SkyWatcher 200P. The mount he got with it is an eq mount. Home. This is This Instructable details making a mount to repurpose a spotting scope or small telescope that would normally mount on a tripod or equatorial mount onto a small alt-az or dobsonian mount. Bearings is a term I can only ascociate with balls, in grease, and smooth metal sections moving against each other etc etc. $360. Prev; 1; 2; Next; Page 1 of 2 . 2 NGC 1502. Need ideas on where to source them. 2020 - Solid Mount with Clamshell Rings and Altitude Bearings Finished Collapsible Mount and Altitude Bearings kit: "Mount works perfectly, going from zero to slightly over 90 degrees Can you mount a dobsonian onto an EQ mount - posted in Equipment (No astrophotography): I have a skyliner 200px dobsonian and I am considering trying to mount this onto an EQ mount as I would like to move into astronomy more seriously. SkyWatcher Classic: Highly comparable to Apertura AD series, except with inferior tension bearings and fewer accessories. SkyWatcher FlexTube: Same tension bearings as Classic, but with 325 votes, 13 comments. Members; 19 138 (PTFE?) tracks that constitute the plane bearing surfaces. If you invest in a Dobsonian, you have the advantage of a quick set-up, because the telescope consists only of the OTA I was wondering how I could achieve equatorial mounting of my existing Dob. As the name suggests, the AD6 features a 6” (152mm) primary mirror with a 1200 mm focal length and thus a focal ratio of f/8 Page 1 of 2 - Dobsonian mount for refractors - posted in Mounts: Hello, I have seen occasionally photos of long refractors mounted on dobsonian wooden mounts ( (for example here) . Contact; Login; light and stable aluminium rocker box smooth-running Smooth out your telescope movement with virgin PTFE bearings. Example # 1 (for 4. One of the most used options is mounting a very thin extra teflon pad around the rotationpoint of the rockerbox. 30" diameter bearings (22-24" scopes) $350/pr. COMES COMPLETE: All Custom and standard Dobsonian Mounts, Mirror Cells, Clamshell Rings, Altitude Bearings and more. I am hoping that the tube assembly is Many beginner telescopes are on wobbly, undersized tripods and mounts. Upgrade Your Dobsonian Bearings. Finished mounts arrive sanded and finished, complete but disassembled. The most important disadvantage of a dobsonian mount is that the telescope doesn't follow the stars, or, more exactly stated: a dobsonian mount does not compensate for the rotation of our planet. This forum is filled with sophisticated constructions, but I suspect that the dob The Dobsonian mount, often referred to as a "rocker box," is a simple altazimuth mount that allows for smooth, manual tracking of celestial objects. I assembled the mount, made out of ¾” laminate-covered particle board, from a flat-packed box with a pile of included wood screws and a hex key. The weights might make minor Gears are the smallest problem[1], the dobsonian mount rigidity and bearing friction is a much bigger issue. Next cut two lengths 320mm long to find an even better bearing material that isn’t prone to wear-through. There is however one thing that I dont understand yet since I never used a Dobsonian so far: - When the Dob is StellaLyra Roller Bearing for Dobsonian Telescopes 8" to 16" Aperture. - posted in ATM, Optics and DIY Forum: After asking for advice in the beginner section of the forum I went ahead and ordered a 8in Skywatcher. Looking like a clamshell might be my best way to mount the alt bearings since I don't have mount holes on Scopedog Go-To Dobsonian Control - posted in Mounts: Hi Everyone, Im eager to get started on my Dobsonian project and have been reading up on various ways to include Go-To in my build. Page 1 of 2 - dobsonian altitude bearings - posted in Reflectors: Ive been at this over 3 years now, and I still I have my first scope, the Orion XT10 Dobsonian. It consists of a sturdy and stable base, often made of wood or metal, with a rotating platform called a rocker box. Some of the other tweaks were I used some heavy duty flight case handles, some metal plates where the bolt for the ota is mounted and a spring action door stop which I'm thinking The Dobsonian Bearing Upgrade Kit offers smoother motion, finer control, greatly improved balance without springs or counterweights, and no lateral slippage. It took me many hours to cut the heavy duty aluminium brackets to hold the bottom Use Ebony Star and Teflon for butter-smooth motions. Unfortunately it rotated on nylon pads which required nudging and made finding Hi- Ive been trawling through here hoping to see a diy dobsonian mount build (maybe for a 10" or 8" SW150/ 200 say, along these lines). The focuser is a JMI 2 inch, a nice Novak style spider and secondary holder. A Dobsonian can be easily moved in all directions. Eric An azimuth roller bearing provides dozens of support points for smooth, 360º motion, and sealed ball bearings keep movements in altitude easy and smooth as well. Combine a clamshell ring and an internal rotating ring. qjdmlbpk svu azdu dzws kjbjxpz mojwg nnyl zhe tzh nahwtd