, Hey Cory It's certainly more You know, I didn’t actually measure that. How do you make the motor shaft? With a computer controlled motorized mount, you have several ways to locate an object. You can get my SketchUp plans above, if you like. I am about 36 latitude. Reply with image links when you decide and build. Belay that. beautiful than a GEM, especially if you like fine wood and a beautiful finish. I may also look for ways to substitute more complex motor control for complexity of assembly, because I have knowledge in that area. I just built my version of based on Cory’s design. First site I saw that noted that aspect of things. We need your list…. And it's about ten thousand dollars cheaper I don’t have easy access to tools and a workshop, but do have access to commercial CNC routing at reasonable prices. Tools – Jigsaw, router, … I’m glad I’m not the only one having difficulty deciding which variant of an EQ platform to go with. Cheers. There are several reasons for this but here are the main ones: Alt Azimuth mounts, the main alternative, are moved and aligned via two central axes – both vertically and horizontally. Make offer - Orion 10" Newtonian reflector telescope on motorized German equatorial mount. It took me a long time to figure out exactly how they really worked and then come up with my own simplified design for it. Hi Andrew and Mike, apologies for the delay! Does that change the curve of the front pieces or just affect the height of the back and how would I figure them? I used the jig to further refine the curve because my printed VNS shape wasn’t quite perfect enough for me after a while. The spacers between the two pipe "T's" were cut from a sheet of white nylon that I found somewhere. Currently I am trying to build my own EQ platform, your post is very helpful. circles. £229.00 Including VAT and Warranty SkyWatcher EQ3 PRO SynScan Equatorial Mount & Tripod. The little Tasco refractor in the background was later sawn in half and made into a finder scope, a fitting end for Why do you have a bolt through bottom and top of the platform? is very difficult to manage when it is pointed nearly straight up. Add a wedge to … To build the GEM shown below you will need to cut the threads Great build. I havent decided what type of motor it will be used, stepper motor or servo motor, I intend to use Pololu board controller connected through … to the post. My location: Trichy (10.85 N) | Telescope: GSO 8″ Pro Dob | Camera: Nikon D5200. This project uses a Feather M4 and Trinamic's TMC-2226 stepper motor driver to enable you to take long exposures of the night sky with just about any camera. Hi Cory. This is just a sketch, the measures are not the real ones yet. Control Your Telescope Using Stellarium & Arduino: I am fascinated by astronomy since the first time I looked to the night sky. That should give about 48 minutes of viewing. Keeping things simple is usually the best. Orion 10" Newtonian reflector telescope on motorized German equatorial mount. I ended up using a coma corrector for Newts, which gives you just a bit more out-focus, and only 0.1x or so magnification. This website uses Google Analytics to collect anonymous information such as the number of visitors to the site, and the most popular pages. The base of me scope is 24 inches square. Do you have the CG measurements for your Zhumell 10” Dobsonian? Were you able to achieve focus since this is a trouble with dobsonians and cameras in general? The angle of the axis of the cone (to the ground) is set at your latitude, and this determines most of the measurements needed to build one. How can I make this type of platform , I am using 10″dobsonian .can you help me . I’m very curious to find out how well it works. No problem — the power supply I used was simple: I just purchased a cheap adjustable power supply (that had 9V as an option), cut the wire and replaced it with a stand 9V battery connector. Once you are accurately polar aligned and attach the … France - Paris - Arc de Triomphe telescope_sq . I apologize I haven’t had a chance the last week to update my article with more details, but I PROMISE I will soon! Otherwise this annoying popup will happen all the time. Actually, that bolt is simply for transport purposes. At my altitude, 32 degrees with the south pivot design, I am afraid the board is going to become too long. Commercial EQ wedges will run you anywhere from $200 up. As if I didn't have enough projects going on all at once I have started yet another, an equatorial mount for my telescope. Any suggestions? A cheap and easy way to take the place of the 9V battery that didn’t last very long with that kind of load! I am from India , My latitude 20°North . However I’m still at a bit of a loss as to how to design the vertical segments. My EQ-5 mount ( carying 200/1000 newton ) with brand new motors.After polar alignment, they track objects very well. The tube was made from a concrete form (sonotube) and the mount was built entirely of 2-inch plumbing parts. Once the axis of the mount is aligned with the axis of the earth, you only have to push the mount in one direction to follow the arc of the stars or a planet through the heavens. The trick is that the cone has been cut down to its most simplified form such that it can just support the telescope, without needing to fully surround it, and is only allowed to roll a few degrees, so the telescope doesn’t fall off. My guide in the construction of this cutting-edge piece of technology was Sam Brown's Hopefully using that, you will be able to see how I created and designed the curved vertical sections, and the angles and such. Copyright © 2019 PhotographingSpace.com, LLC, Like this article enough to buy the author a drink? Celestron AstroMaster 130EQ Telescope (31045) £120.00 12h 39m. Hello sir The motor handled things without a problem, but I did run into an issue with the battery not lasting long enough, so I created an external power source to keep everything stable. You can adjust all of your cookie settings by navigating the tabs on the left hand side. I have some raw video on Youtube with an example, I will link to that as well. Good catch! really simple design. It’s on my LONG list of things to do, so yes…eventually! Excellent stuff. At first it was a little too slick for the bearing, but after I lightly sanded it to rough it up slightly things worked well. We are using cookies on PhotographingSpace.com, just like everyone else. Yes, for your purposes an EQ platform would be great! I have to admit the Gaurav has asked all my questions except did you use an online spreadsheet? Please keep me informed on how it performs! I was determined to just use pieces and parts around my garage for this, so I am sure there is a much better way to make it. ( or do i need some gears etc). I’d very much like to take this project on, and I like your design. Also, since it is a DC motor, I found that it was better to power it with 9V mains power when possible, because when the battery starts to drop, it slows down. For a weight, just get a barbell weight from your local sporting goods store and secure it with a hose clamp. was appropriate. I know since you’ve sold it, you may not remember, but once again this looks simple enough and possibly one of the best designs out there. It's suddenly manageable because of the simplicity of this mount. You must at fairly high altitude. I see your EQ platform is different to others I have found online. I used SketchUp to help determine to angle for my approximate latitude and the curve (the first two photos), and then further refined the design using a hinged jig I built to rotate around the axis with a clamped sander (the last four photos). Keeping things level is always helpful! Sorry for the delay in replying. I am living in Trichy, India. , Of course! It might help a little as well. Total cost of this scope in 1971: eighty dollars. Add to cart . axis of the earth, you only have to push the mount in one direction to follow the arc of the stars or a planet through the heavens. I need to stop. A well-made Dobsonian telescope is an excellent observing machine. please help me anyone . Here are a bunch of photos of my design: For visual use, this really isn't necessary, even at higher powers. Hello Sir How to Build an Equatorial Mount for Long Exposure Astrophotography: Last Fall (2011) I took full advantage of the fantastic sabatical policy where I am employed. It was fun, back in the day! This means my design will be oriented to easy assembly from commercially made parts, and so at higher cost than Corey’s. Two Lenses And Barlow. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. However, while there are plenty of constructed examples, there seems to be little on how to design them. (a small donation of $1-$20), Get our DSLR Astrophotography Cheat Sheet, Astrophotography Action Packs for Adobe Photoshop, Interview with a Smartphone Astrophotographer: Grant Petersen, The Exact Camera Settings I Used For a Total Lunar Eclipse, How To Photograph a Total Lunar Eclipse “Blood Moon”, Milky Way Finisher Photoshop Actions: Example Workflow and Installation, Earth’s Online Intrusion Detection System (Asteroids), http://www.telescope.com/Accessories/Telescope-Drives-Controllers/Orion-EQ-2M-Electronic-Telescope-Drive/c/3/sc/46/p/7827.uts?ensembleId=6, http://www.celestron.com/browse-shop/astronomy/accessories/mount-accessories/motor-drives/astromaster-and-powerseeker-motor-drive, http://www.reinervogel.net/index_e.html?/Plattform/Planung_e.html, https://photographingspace.com/askps-dob-ap/, How to Create a Great Online Astrophotography Profile, How to Create a Mosaic with Sequence Generator Pro. Article from hotelsrate.org. great build! I’ve got a 8″ skywatcher dobsonian, and I’d like to at least make use of my digital cameras small 15 second exposure time to maybe take a few good images of say the greater orions nebula to stack into something worth while. Could you post a complete parts list required for us to build our own versions of this mount? Figure 4-38 shows an EQ platform at one extreme of its motion, with the scope about 7.5° off vertical. Others allow you to reset the platform manually, simply by pivoting it back to the starting position, which takes only seconds. It features unmatched stability and smoothness of motion. setting circles and focuser came from Jaegers Optical way back when. Astronomy DIY . The equatorial is more complicated, but still not out of the question even for those with just … I own a 7x12 mini lathe and a micro-mill, so I'm not going to be making 24 inch … You started out with pictures of cones. Post a photo of your platform when you’re finished! It was awesome to use. Operates on four D-cell batteries (sold separately). I apologize for the delay (again…) but I quickly updated the article with a download link to the old SketchUp plans I used, and the template I created for the roller guides. Trying to figure the radius of the cone. I have pretty much decided that a vertical north/south sector has to be easier to set up (half the number of roller bearings to start with) and a pivot for the rear south/north sector (another less complicated item to make). Another advantage of this type of mount is that now you can play with really long focal lengths. As for the motor shaft, I used a machine screw, bolts, and bushings to create a cheap and dirty bearing that would support the weight so the motor itself wouldn’t have to because it’s so small. Or does it stay put if you tighten it enough? How did you determine this angle? Nothing like viewing or shooting Jupiter and Saturn with a 4x Barlow and not seeing drift in the eyepiece. it would be very helpful. I’m an engineer, so I’m used to using math to get at problems – after a couple of days of thinking about these things I realized that the goal was to keep three points on the surface of a cone with it’s axis aimed at the pole. The Polar Disk Mount is finally ready for my 6" f/7.5 homemade telescope. The equatorial mount was invented in the early 19th century by German optician Joseph von Fraunhofer to track the stars. I’ve been trying to figure out a way to drive mine. The next logical step up from a manual EQ mount is one that includes a motorized clock drive, that allows you to take long-exposure photographs of deep sky objects in space. Cheers. In astronomical telescope mounts, the equatorial axis (the right ascension) is paired with a second perpendicular axis of motion (known as the declination).The equatorial axis of the mount is often equipped with a motorized "clock drive", that rotates that axis one revolution every 23 hours and 56 minutes in exact sync with the apparent diurnal motion of … However, I put a lot of time into tweaking it. Learn how your comment data is processed. Whether you're looking to upgrade from your present telescope mount or are seeking a more robust, motorized equatorial system for a new telescope, you can't go wrong with the smooth-moving, sturdy Orion AstroView EQ and EQ-3M Motor Drive Kit. I later built a 4-inch f/4 scope for my five-year old son. I noticed in your last post you mentioned you rewired to a better power supply. I don't tend to design much in advance on bits of paper. I decided to all the 3D plans to make those decisions for me…if I remember correctly. Thanks to the GDRP regulations and the EU, we have to tell you all this information in an annoying popup box. As you can imagine, this point and observe method of … As I replied above — it actually tracked quite well. Equatorial Mounts. He never tired of using it. … trying to view a planet or lunar object at high power. With the single pivot bearing on the south end is the angle of that mounting critical or do I just need to make sure that the table top is level? I’m a bit late to the party here but just finished building one of my own and am using the same motor. Not rolled along the ground – rolled in-place, around the axis! I´m currently in plans on building a EQ platform for a 17.5 incher Truss dob i made, and i´m looking at Orion´s EQ2 Drive and wondwring if it can do the job: This becomes a big problem if you are Indeed it is! I used a Canon 550D, prime focus, with the 2″ coma corrector. An avid astrophotographer for timelapse, deep-space imaging, lunar, planetary, and star trail imagery, he is an all-around jack-of-most-trades for night-sky photography. Tomas, Odd that I had this question twice today! Here is my build, in pictures. Did you have to drill out a hole or groove a surface on the threaded axle for the screw to stay in place while driving the axle? Yes — the back height is important, but it wouldn’t change the curve — that is just to help you aim the axis at the celestial pole. For me the ah-ha moment with this kind of mount was realising that an EQ platform is a cone that contains the telescope, and is rolled along the ground. I’d been frustrated by the lack of ability for my Zhumell Z10 10″ Dobsonian reflector telescope to track the night sky. From your SketchUp 3D model file can you find out what your COG Height actually was for your 10″ Zhumell Telescope? Build that f/6 or f/8 planetary Keeping this cookie enabled helps us to improve our website. Oh, so you need proof? Dobsonian telescope. My wife and I expect to run public nights on behalf of the local astronomical society and a platform will be easy to transport, set up and use. Equatorial Platforms for great Dob tracking. I’m using Autodesk Fusion for design. I looked at some of the spreadsheets, but in the end did not use them. Try that with a Dob! As far as the speed is concerned, I didn’t really know other than trusting the other plans I’d looked at that used that motor. Right now I’m just trying to decide how low profile I can keep this thing – I’d like to add as little height to the already high eyepiece. I’ve looked through dozens of pages and still don’t have a clear image of the whole construction on these things… Mind you I’ve been specifically looking for a model that uses a Celestron motor drive, because like I mentioned, like 3/4 of the designs I found have a goofy DIY project for the motor, with a few parts from John Doe’s website, and Joe Blows hardware store…. I earlier had used a cheap 120mm telescope and remember how frustrating it was to watch the object float out of the view, but buying a motorized company manufactured telescope would be very expensive indeed. You can buy fancy motorized “equatorial mounts” for telescopes and cameras, but it’s way cheaper and more satisfying to build your own simple “barn door” tracking mount using a long bolt or threaded rod as a drive screw. This design looks quite simple and clean and I think I could figure it out as long as I knew how you used sketchup to figure out the angles on the curved track portion, and the length to the rear pivot bearing. many people have woodworking equipment but few people have a metal lathe. All the best! However, something to note is that a different size roller bearing that makes contact with the sector surface will require different motor speeds to accurately track. Any warping would alter the tracking accuracy…. I hope you and yours are doing well and enjoying the holiday season! This means that every time you visit this website you will need to enable or disable cookies again. If you still have your measurements it will help me verify the values that I use in various eq platform spreadsheets. objects move more quickly across your field of view as the earth turns. A GEM, by its nature, only has to be moved in one plane to follow an object. This becomes a problem when you are viewing at higher powers, since This stems from trying to set up my 10" Meade LX200 for astrophotography. Build Your Own Equatorial Mounting? After MUCH research, I found that the cheapest way for me to get basic (and automatic) sidereal tracking is to build (or buy) a motorized equatorial platform, which required absolutely no modification to my Dobsonian telescope. I was living in Central Iowa, USA, at the time, about 41 degrees north. Why did you use the jig when you have already printed the form of your VNS bearings ( I have a copy from reinervogel.net so ready to go). Recently, I bought a 8" Newtonian telescope that came with a Dobsonian mount. This can get to be a … In stock. One thing I didn’t mention that I thought was very important, was that I used 2-3 coats of clear polyurethane (the water-based kind) on the entire wood surface, because I didn’t want ANY warping of the wood due to all the moisture in the air from being outside. You can also put leveling feet on each leg, which is neater looking but takes more time to adjust when setting up. This article … setting-circle indicators out of brass and later added a red LED underneath each one to illuminate the setting Well, in late 2012 I started with astrophotography with this setup, and these are a few of the shots I managed to get with it — some of my first astrophotography, ever! It seemed just the right size for him. It seems is made of several parts. Equatorial Mount Diy. Thanks for the question, but I’m sorry to say I do not have the measurements anymore. It was also cheap and available. The platform approach turns it back into something much more tractable. or buying a motorized equatorial platform that sits under the Dobsonian and effectively converts it into an equatorial amount. scope you've always dreamed about. Manual and goto Equatorial mounts ideal for astrophotography when tracking the night sky. I’d love to send you the checklist I made for traveling with astrophotography gear! You can star hop by grabbing the scope and moving it around the sky by hand. http://www.celestron.com/browse-shop/astronomy/accessories/mount-accessories/motor-drives/astromaster-and-powerseeker-motor-drive. 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. Astrophotography is possible with a Dobsonian and equatorial platform!. through. The legs consist of three wooden triangles bolted Some computerized telescopes will tell you where the telescope is pointing – but only after you move the telescope manually. I take a general idea and try my best to foresee problems and improvise accordingly. I was successfully tracking and shooting Jupiter and Saturn at ~4,800mm (two 2x Barlow lenses on my DSLR). The majority of Astrophotographers will recommend Equatorial Mounts (EQ’s) for Astrophotography. Cheers. Once the axis of the mount is aligned with the They are generally equipped with and slow-motion controls in both right ascension and declination, so once your mount is polar aligned, you can manually track celestial targets. It was built with a used Edmund Scientific mirror that I bought at an astronomy flea market for ten dollars. It’s by all means not a wonderful example of AP, but at the time, it was amazing to me! it is also much easier to use. This can be added to any of the trackers, and it really makes it easier to aim your camera’s ball head. Sure! Like I said — it’s on my list to update this post with all the details I can remember, soon. I opened your 3D model and tried using SketchUp’s “tape-measure” tool to estimate the Height of your 10″ Zhumell Telescope COG. That made things a lot easier to picture mentally. First, since the Dobsonian is basically an alt-az mount, you have to push it in two directions This project was designed to be much cheaper commercial equatorial mount trackers and to be easily (and cheaply) modified and customized, a feature many other trackers lack. Better safe than sorry. It’s pretty much throw-and-go, especially for visual use. , Good luck! Astronomical telescope mounts. don't mind spending an extra 300-600 dollars, this is an effective solution. it a little more carefully by nudging the box as well as the tube. Good luck! Thanks very much for putting together such an informative site! Included hand controller features 2x speed, 8x speed, and pause mode. I have another question regarding the Motor Drive.. How did you manage the speed, to keep the objects centered all the time?.. Jack Kramer. The Dob is simpler to build...that's one reason why it's so popular. I have an 8 inch Orion Dobsonian, and expect I can get about +/- 6 degrees of motion from the platform. The motor opens the door very slowly to match the … In Stock . This two-part project aims to deal with this inconvenience. A summary about the DIY german equatorial telescope mount I have made and used for astrophotography in my observatory. I also have a 10″ dob and am making a platform for it, but this is a very slow project (i have too.many other commitments and hobbies!). Normally, when I set up, I just sight the pole star and put a wedge under one The page with the alpha and beta angle references is on this page: I used SketchUp to create a 3D model of the cone and printed out a template from there. Thanks, I wanted to simplify things as much as I could while still getting decent performance. I’ve just stumbled onto eq platforms in the last few days – I’ve preciously thought about trying to build an equatorial mount for my Dob, but was thinking of a “full” mount, that would let the scope rotate through a full 360 degrees. One more question: It looks like the angle of the VNS segments is about 14 degrees (the Beta angle referred to on Reiner Vogel’s website http://www.reinervogel.net/index_e.html). Being able to adjust the speed of the motor was very useful and required for adjusting the tracking. Its f/8 focal length made the tube over 64 inches long. The most common telescope mounts are the German equatorial mount, the fork mount, and the Dobsonian mount. The 8-inch f/8 reflector in the back was one of my first scopes. In the so-called "good old days" if you built your own telescope, you generally made an equatorial mount to go with it. New house, big section and I have my work cut out. Of course the size of the gearing (if you have it) and the motor axle/drum that makes contact with the sectors makes a difference as well.
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