Electronics and software automate the process of taking pictures. Reply narrow the frame. They use a simple plywood mirror cell, stating that for an 8 inch mirror this cell will be adequate. Staples or finishing nails work fine, but be sure they dont bump up above the surface of the plastic. Thicker knitting needles would be even There are some test sketches in the "Tests" folder, start with those. As the telescope tilts toward the horizon, the mirror must be supported on its edge. an inch or so apart, so the focuser body could be pretty low profile. occurred to me that a square turned 45 degrees would give me two flat Our websites use cookies to improve your browsing experience. I installed the spider first, about one inch down from the end of the square end of the tube. Line the underside of the rocker box with a ring of ABS plastic to allow it to ride on the base. All that remained was to design and print a bracket, and buy the needed parts. I hate focusing. The core of the telescope, the steel mirror cell holds and adjusts the heavy, curved primary mirror. large in diameter (1.6") so that adds to the fine-ness of the focus Thanks Pinbout for sharing your design. Trim off any unused fabric along the base. on Introduction. Tom's Homemade Telescope Page - DIY Craford Focuser - Google The cage should be a hollow cylinder about wider than the mirror, with the focuser mounted directly facing the secondary mirror. The kit just contains the electronics - it is up to the user to find a stepper motor and attach it to their own telescope focuser. Actually getting the parts into my hands turned out to be more of a challenge than I would have expected, but in the end, I have a wonderful telescope that I enjoy very much. Sew the seam, and sew an elastic cord into the top to secure it to the secondary cage. I don't have the skills to build a focuser using a. Dozens of projects in every issue covering electronics, craft, fabrication, and more, Learn tips and skill-building tutorials from experts in the maker community. The ARtemis module came in a kit form actually just two circuit boards one of which I had to source the parts, build and box myself. The mirror itself must also be able to tilt in three dimensions in order to aim its light at the secondary mirror (a process called collimation). Wooden Telescope Part 2: Tube and Mount - Instructables I phoned in the order in the last week of February and was told that it would take about 4 weeks to deliver the mirror. One of the neat things about the square design is that the The rocker sides are each made of two identical pieces of inch plywood glued together, creating two sides one inch thick. His passion is using CAD design and his homemade CNC router to bring large wood projects to life. Telescope Focusers | Orion Telescopes: Shop 1" Rack & Pinion Focuser. A Pocket Sundial From a Broken Pocket Watch! I have not yet figured out a better way to hold the tube. I'll use an aluminum tube for the finished draw tube but for now the plastic tube . How to make diy focuser pvc - YouTube Helical is one of the option i am considering. DIY Remote Telescope Focuser - YouTube Download the Gerber Files. Pierre Lemay, thanks for sharing your simple and incredible design. I think I got what I wanted and seems best solution for me. In order for the Rocker Box to pivot on the Ground Board, a center pin is placed in a hole at the exact center of the Ground Board and Rocker Bottom. My DIY Motorized Telescope Focuser - YouTube I use a 3D printer and an old gear motor to create an electronic telescope focuser.This is my first attempt at voiceover, I'm using a headset. Instead of the rack and pinion, they have a smooth spring-loaded shaft which holds the focus tube against four opposing bearing surfaces, and controls its movement. The project creator Robert Brown made a good video on testing the board. The glue should keep the nylon from fraying. It may take you a while to adjust the image correctly, but it's not hard to do, just time consuming. on Introduction, Very nice build nikon20. homemade Crayford focuser. The length of the Rocker Front also had to be changed so that the outside edge of the Side Bearings matched the outside edge of the Rocker Sides precisely. I have seen some VERY impressive photos similar to those, taken with Nikon D700 and D300 cameras, with the proper filters- and mounts- on a quality scope. Deep space photos like these require HOURS of exposure for each one. Accordingly, with 1.25 focuser, you can use 1.25 eyepieces, with 2 focuser - both 2 eyepieces and 1.25 (through a special . If you don't want to go that route, contact me at gary.hethcoat@gmail.com since I have a lot of spare parts and I can sell you a "kit" with a PCB and only the parts you need. Once the pieces were cut and I held them around the tube, I decided to cut them a bit smaller because the extra space was too much. That's pretty much the focuser. I used my router to "mill" a flat area for better contact with the focus adjustment rod. I'm only hoping to supplement it a bit with some info and pictures aimed at those with limited skills (such as myself) :-) I'm not an electrical engineer, I'm more of a software guy with some limited knowledge of electronics and basic soldering and assembly skills. It's the same in form, but has a perfect, true 13.35mm hole. I'm' glad I did, because I didn't like the first color that I had chosen. We tried this in our back yard, but found that it was too difficult to aim both the tube and the moving mirror at distant trees in our suburban yard. Step 4Attaching the Side Bearings and assembling the Rocker. A neet site: http://www.astropix.com/HTML/I_ASTROP/CAMERAS.HTM Cool instructable, Dude! The little app is simple and works great. How to make a $30 DIY star tracker for astrophotography I also have an extended photographic build diary of this telescope posted on Imgur. I drilled the holes in the center of the ground board and rocker bottom using a 9/16 bit, thinking that I needed the extra 1/16 so that the spacer could move. Several functions may not work. The only thing on the list that was a bit difficult to find was baltic birch plywood, which had to be special ordered from the lumber yard. focusers for that project. The wide square footprint would make it pretty stable when mounted to The next day, I centered the rocker on the rocker bottom (which had been cut using the same method as the side bearing circles), drawing perpendicular lines through the center of the rocker bottom to use as a guide, and tracing the position on the rocker bottom. a try. I also wanted to buy the other mechanical partsmirror cell, spider, secondary holder, and focuserso that the performance of these pieces was not limited by my skills. I called to express my concern and was told that it had all been packaged a few weeks ago and that it, For complete instructions on building a telescope such as this one, I strongly recommend buying a copy of, After cutting the circles for the side bearings, I set up the jig to cut the curved edges of the rocker sides. I attached keepers 1 inches wide by 5 inches long, extending above the bottom of the arcs by about 1 inches. Whether you need a basic rack-and-pinion telescope focuser for your homemade telescope project or a premium Crayford-type model with dual-speed focusing as a performance upgrade, you have come to the right place. If you follow the procedures described above, your telescope's optics will be perfectly aligned. These will be stored in your browser only with your consent and you have the option to opt-out. The back of the mirror floats on 3 or more support points (this build uses 6) that are calculated usinga software tool called PLOP. 5 weeks after I had ordered the mirror, I called to ask about its status. focuser. flexing. This combination has proved to be effective for all positions except when the tube is pointed directly up. I wanted to finish that instructable before the contest ended but was too late :-). This sure is going to be a project I will work on. Here is a simple 3D printed helical focuser that cost just a few cents (assuming you have a 3D printer). Did you make this project? can't click on it or copy and paste it; it's a graphic file to thwart Able to make myself using my own humble tools (or toys as the pros will call them!). They eyepiece height ended up being about 5'10" high at zenith. } catch(err) {}, SH-232 Sharpless sh-232, sh-231, sh-233, sh-235, NGC2174 Monkey Head Nebula, Sharpless 252, Sh2-252, HDW3 Hartl-Dengel-Weinberger 3 PN G149.4-09.2, SH-198 Sharpless 198, Soul Nebula, IC1848, NGC281 IC11, Sharpless Sh2-184, Pacman Nebula, SH2-173 SH2-173 Phantom of the Opera LBN 593, SH2-168 Sharpless HII regions. Step 3The Side Bearings and Rocker Sides. The email bounced back to me. I applied contact cement to the first inch of the veneer and the mating inch of the tube. And a couple of upright bearing blocks. It is used to setup water outlet from overhead water tanks. I also figured that the extra expense was worth it, considering the amount of money I was investing in the project overall. once. The bearings only need to be Along with some silver bits $299.99 More About Telescope Focusers I got no response to phone calls or emails after another week, and decided to wait until the primary would be finished in another two weeks. I don't have the skills to build a focuser using a. scope, I only put knobs on the outsides. Build a Backyard Dobsonian Telescope - Make: DIY Projects and Ideas for how much travel you actually need, you can cut the tube off so none of After you've done that, put a couple of tiny pan-head screws To do this, the mirror cell needs to be supported by 3 large bolts, at least 2 of which are adjustable. Like i said these are not my photos and i cannot coment on exactly how he set it up as i was not there all i can say is i saw the mount he used when he picked up the telescope. Have you made any mods on it since you built it? The 48 inch width of the veneer was close enough to the diameter of the tube that I used it as is. A week after they said they would send the secondary and other parts, I called to ask if things had been sent. The cost is a bit more than some of the other combinations, but by only $10 or $20. While round tubing is sturdy, square tubing is easier to work with. the side of a rigid secondary cage. initiatives for the next generation of makers. 11 years ago I got no response to phone calls or emails after another week, and decided to wait until the primary would be finished in another two weeks. This is where you will use screws to strongly attach the focuser onto the tube. I used one of the top scraps from the rocker sides to mark an angle of 70 degrees from the center of the arc to the curved cut in order to properly space 1 X 7/8 teflon pads on the arcs. Im sorry to hear you couldn't make the contest. I sanded all parts of the telescope with 220 grit sandpaper followed by 400 grit, making a very smooth surface to apply the stain. We moved the operation to a nearby park and got a focused image of the most distant trees (300-400 yards away) quite easily. After the second call, I received a response that it would be ready at the end of the following week. In scaling up the K/B 8 inch design, I made a few changes that, I hope, will improve the design for 12.5 inch aperture. At some point in the building process, my goal became to finish the scope by RocheStar Fest, an annual event of the Rochester Astronomy Club. Shorter thread side will be used to attach the eyepiece. DIY focuser design - ATM, Optics and DIY Forum - Cloudy Nights It took about 3 weeks but, since Anttler's did not even reply to the Paypal dispute, I received a Paypal refund. My homemade motorized telescope focuser for Celestron C8. For the ATMer I do find that there are an endless number of parts that can be designed and printed for home built telescopes and binoscopes. After cutting the circles for the side bearings, I set up the jig to cut the curved edges of the rocker sides. Finally, I glued a strip of Ebony Star laminante to the curves edge of each side bearing using contact cement, using a flush edge bit on a router to bring the edge of the laminate even with the edge of the wood after the cement had set. To test the concept I used a short piece of two inch PVC for the draw tube. I was certain not to move the jig at all before cutting the second circle. I suppose that one could complete this project without these two tools, but it would be difficult to cut the pieces accurately enough for a good fit. with a genuine question or comment about the design. I had to take apart the focuser in order to get my bolts in place. This means I can use FocusMax to do the focusing. DO NOT drill out the holes in the board! 1/4" x 20 bolt, and the nylon bolt end against the smooth knitting Two inch internal diameter drawtube. While I will freely admit that most astro-photography is WAY beyond me, you certainly do NOT need a $3200 camera to do so. At their suggestion, I also ordered a 2.6 inch secondary mirror. eyepiece on the ground (or worse, on your primary mirror!) The last chapter of the book describes a plan for an 8 inch sonotube dob with a few design elements from their truss design, and, as I read that chapter, the simplicity of its construction was very appealing. But let me see what items I can arrange to make a helical. I would also like to know about how you can take such fantastic pictures without a field rotator and an autoguider system. After waiting for the stain to dry for a day, I applied polyurethane in two coats, going over the surface with 0000 steel wool between coats. If the telescope rotates forward or backward on its own, then the mirror box is too deep or too shallow. I decided to use baltic birch because it is recommended by Kriege and Berry as well as many online sources. Picture of DS-4. Read the documentation though, there are a lot of functions and options. Make the drawtube longer than you think you'll need, just in Depending on your telescope, one of the Brackets that Robert has may work for you. To hold the tube in place within the tube box, I used a combination of pieces of felt inside the box and wooden shims between the tube and the box. I started by trying to drill out a metal gear for the focuser shaft. A All Orion 1.25" and 2" telescope focusers are engineered to provide smooth drawtube action to ensure you hit the exact focus point . A few months later I ordered some other things from Scopestuff, including strips of Ebony Star laminate for the side bearings, a ring of Ebony Star for the rocker bottom, a strip of teflon to cut pieces for the ground board and side bearings, and a new base for my Telrad finder. I have already seen some designs on CN, Stellafane and web but still checking if someone has recently made anything simpler. It doesn't. A tilted focuser will have no effect on the image quality. Drawing lines between opposite corners of the tube box sides allowed me to locate the center point on each side. You will look through these as you rotate the wheel. I made a similar helical focuser with a nice 2 inch thing I found in Classifieds. Likewise, the side bearings are made of two identical semicircles of 5/8 inch plywood glued together, creating side bearings that are 1 inches thick. on Introduction. I was finishing this inner debate when I got a copy of the book The Dobsonian Telescope by Kriege and Berry as a Christmas gift. Telescope Electronic Focuser : 16 Steps (with Pictures) - Instructables Community Forum Software by IP.BoardLicensed to: Cloudy Nights. This is because my router bit was inch and the arc would be cut by the outside edge of the bit (where the circle had been cut by the inside edge.) Two different construction supply companies told me that sonotubes were not available with a 14 inch diameter, even by special order. astronowanabe, Pierre Lemay, LarsMalmgren and. I have no idea how much mail this idea will generate, so I can't rod for the drive axle it would have a fairly fine motion. The Artemis module works extremely well, and is to be strongly recommended. I have one on my 12" f/5 truss dob and the focuser knob is on the top surface of the UTA. Home centers and hardware stores did not carry large sizes. It wouldn't be a two-speed design, but if I used a thin enough That is dirt cheap compared to the cost of commercially available focusers, which can top $1000 and are much heavier than what we will build. If you found some good surplus lenses, you will have made a stunningly good objective for your scope. One 6in dob I made was a complete failure. Measure twice, drill Edited by Pierre Lemay, 25 May 2020 - 08:10 AM. Make sure the shroud can slip on and off of the assembled scope, and that it stretches along the circumference (not lengthwise). My first telescope I built was a 10" F8. I file a dispute with Paypal to begin the process of getting my money back. The lumber yard also gave me a lower price than I expected. What materials did you use? So, as they say, "back to the drawing board". larger diameter. Realizing that it could not be the University Optics cell already, I thought, Noit couldn't be but, in fact, it was. This was to allow the circle cutting jig to be attached to the board to cut the arcs from a center point of 25 inches above the ground. I didn't bother reading his whole article to figure out what f/# he used) I am not trying to say that good AP isn't possible with a sonotube scope, (the 'friend' may very well have pulled it out of the dob mount, added rings and a dovetail, and mounted it on his CGE-Pro or comparable) but in this case it is unlikely.". forward and back along with the drawtube when you focus, and you'll get Let me see if I am able to collect all the parts needed. You can view and download the full file here. Not sure how your toilets are built over there, but here they use what is called a tank flush valve. After picking up a copy of The Dobsonian Telescope by David Kriege, I built my first telescope with a 12-diameter mirror, then later tackled a 12 lightweight scope. One of the companies I had considered as a supplier for the primary mirror was Anttler's Optical. Other supplies that I bought for this project include wood, various bits of hardware, stain and finishing supplies, and a circle cutting jig for a router. Today I purchased what is called atank nipple in India. The side bearings are each made from 2 identical semicircles of 5/8 inch plywood glued together to make a thickness of 1 inches. My DIY Motorized Telescope Focuser - YouTube As I continued to read, however, I was struck by the many complications of the design and, frankly, how many ways I could screw it up. 24 T-nuts, with matching 2 bolts and knobs, 8 Aluminum tubing, thin wall, 1 square, 4 lengths I got mine from Cycle 24, Black woven velveteen, 68 Cut it so it stretches along the 6 axis. I then attached the Ebony Star ring using contact cement. Many sources point out that 10 inches is a kind of sweet spot in the balance between power and portability. I plan to use an FTA over it in case an extension is needed. Also no obvious diffraction spikes in the m31 photo. I found a used 16 primary on eBay. I ended up modifying it a bit after printing. I do have another tube that can be used around the drawtube, but it doesn't really add anything. A week after they said they would send the secondary and other parts, I called to ask if things had been sent. You really need a step ladder even for my 10" when pointed overhead. Able to shift heavy loads of kit ie over 1000g. Perfect for astrophotography or during high power planetary observation. Thin 1/16 Kydex plastic should be cut to length to line the inside of the cage as a baffle to block outside light. 10 years ago Below are cutting diagrams and diagrams of the rocker and tube box with side bearings. Here's my 8" f/6 travel scope with a 2" PVC draw tube and the helical Crayford focuser built right in the focuser board. Lining up this center point with the center of the top of the side bearing, I brought the corner of the side bearing up to the edge of the tube box and attached it with screws. on Step 5, After much debit and doubt i have taken the photos down cause i cannot be 100% sure that they were taking from my scope as i was not there to verify them and i do not want my contest entry to be based on photos and not the build process. I had initially allowed for more of a gap, but realized once I cut the pieces and held the tube inside them that my gap was too large. When you're ready to go on to testing with the windows driver, you want "myFP2_DRV8825_312-1", open that folder. Another vote for Pierre's helical Crayford design. was straight so I wouldn't get a wobbly knob. Be creative! My homemade motorized telescope focuser for Celestron C8. the interior diameter is just a nudge over 2". The project took several months off and on to complete, although a skilled Maker could put a similar one together in a few weeks. Orient this assembly to allow you to view an object on the far horizon. Contact cement is permanent, so the only solution would be to replace the tube! It took a lot longer than I expected to receive my mirror and other parts from Discovery. Nice looking telescope. I paid the 50% deposit and dreamed of DSOs. It turns out that sonotubes are a stock item in 8 inch, 10 inch, 12 inch, and sometimes even 16 inch diameters. Showcasing amazing maker projects of 2022. If you go to buy all of the components for this project from dealers, you will see that you mostly have to buy at least 5 parts, sometimes bags of 50 parts! As the thread shows you could also build the dual speed version, all made of plywood, if you feel ready to tackle a slightly more complex project for a cost of about 5$ more. To view, go here: http://emediadesigns.com/focuser/ I am thankful to enjoy the inspiration, and the details, that you provide, as I will soon be constructing a Dobsonian Telescope. Attach the ball head to the top board. By adjusting the bolts, the mirror can be pointed toward the correct spot. LVLaserTech is right please do not vote for the pictures my instructable is for the build of the telescope not the quality of the photos.and as i said before i was not there is there a possibility that he sent me the wrong photos sure is there a possibility that he used a different mount than the one i saw sure is there a possibility that he is lying to me me about what he did sure. Before you do this, the stepper motor will probably move, but it will make a 'stuttering' sound instead of moving smoothly. That way you won't be dropping your drawtube and Tom's Homemade Telescope Page - Issac Newton Scope - Google When the skies were dark enough for observing I found that the scope moves easily into position and holds that position well. and hope it doesn't fall off Rock Paper Scissors Using Tinkercad Circuits and Arduino, Punchy the MECH & the Autonomous Fight Club, Soft-sensor-saurus | an E-textile Soft Sensor Soft Toy With LED Light. To get this arc, I actually moved the radius of the jig in by 1/8 inch. This motor is available on Amazon. Maker-written books designed to inform and delight! on Step 1, Richards in our local astronomy club. A Homemade Crayford Focuser Measure the diameter of the exposed shaft. 11 years ago We all know the problems with focusing. var pageTracker = _gat._getTracker("UA-1008534-4"); Telescope Focusers | Orion Telescopes: Shop I used the "LEDandBuzzer" and "TestStepsDRV8825" tests. 3D Printed Futuristic Space Age Wall Clock, http://www.cloudynights.com/ubbthreads/showthreaded.php?Cat=0&Number=4721255. knob, and a drill press to make sure the hole for the knitting needle I do it with aluminium alloy, aluminium tube and nice work. While I applaud your building of a homemade Dob, (giving you the FULL benefit of the doubt here) your "friend" has provided photographs that make it look like you're trying to win by cheating. You can easily, and economically (10$) build a Crayford Helical Focuser like the one pictured above in one evening with simple tools. I am well versed in technology, have all the tools necessary to build my own! I took the whole tube assembly outside. Once its cut to length, drill a hole through each end of the tubing with a drill press. I had nearly completed the base and put things together for the first time. I am working on a diy focuser design for my 6" F/8 telescope and asking suggestions for simple focuser. I placed my telrad, optical finder, and an eyepiece on the focuser end of the tube and, using a broomstick as a balance point, found that the tube balanced 22 inches from the bottom. I tried all of my other eyepieces and found that I could bring the image into focus in the other eyepieces, but it was very near the bottom of the focuser travel. #@$%^#@!!!!! The premier publication of maker projects, skill-building tutorials, in-depth reviews, and inspirational stories, Share it with us! the drive shaft close against the drawtube. by cranking Headers for the LEDs, buzzer (2-pin) and temperature probe (3-pin). adapter set screws to slide into. I told them to take their time and get it right. In amateur astrophotography, we run our telescopes overnight. As I mentioned on my binocular That helps with low-profile My concern turned to alarm when my wife told me that Discovery had charged the balance due on all items to my account a few weeks earlier. We were careful to press out any bubbles as we went, but when the job was done we found that there were multiple bubbles in the veneer. I started with a spacer that with a inch outer diameter. Get hands-on with kits, books, and more from the Maker Shed, Skill builder, project tutorials, and more. until a 2" eyepiece or 1.25" adapter is snug. I also wanted to strengthen and protect the cardboard tube. Rock on! Not sure if it is available in the USA. i got a email that someone built a telescope close to mine that has seen the stuff in the photos here is a link to his site http://www.synapticsystems.com/sky/scopes/Dob.htmlif i seem a bit rude please forgive me i just spent 12hrs in a plane i have jetlag and im sitting in a airport.i would like to thank lvlasertech for keeping this instructable lively and informative. This allows for a small clearance between the outside of the tube and the inside of the tube box (14 3/8). See the images how I plan to assemble it. It You will need to remove the regular focus knob on your telescope's focuser. Having an RS trade counter 2 miles away is such a luxury! There was the expense, for one, but also the It was easy enough to drill a hole and tap threads for a A wide hole will let the knitting needle creep DIY Craford Focuser. Built one of these http://emediadesigns.com/focuser/ working really well only cost less than 40.00. The bigger upvc nut will be attached to focuser plate and longer threaded side will be used on it for the focusing.
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