homemade telescope focuserwho is susie wargin married to

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A smart collection of books, magazines, electronics kits, robots, microcontrollers, tools, supplies, and more Your design is simple and nice. Then it was time to stain and finish. This cost around $100 to build and all of the components came from Jaycar, except the brackets which were made with 1.2mm sheet metal. When the skies were dark enough for observing I found that the scope moves easily into position and holds that position well. From everything I had read, I expected that getting a sonotube would be as easy as running to any hardware store and picking it up. Did you make this project? On the cutting diagram, you can see that the side bearings were cut 26 inches long. initiatives for the next generation of makers. Not sure how your toilets are built over there, but here they use what is called a tank flush valve. I have not yet figured out a better way to hold the tube. the bearings right at the edge of the frame, reducing the frame to knob, and a drill press to make sure the hole for the knitting needle Make sure the shroud can slip on and off of the assembled scope, and that it stretches along the circumference (not lengthwise). As I read the book I decided that I should build a 12.5 inch truss tube scope. he might just have a $3200 camera, they aren't very hard to come by. This is the upper tube that contains the flat secondary mirror, Telrad finder, and focuser. accessible by all ages and skill ranges. I started with a spacer that with a inch outer diameter. wobbly knob still works, and adds character. One 6in dob I made was a complete failure. This sure is going to be a project I will work on. I was certain not to move the jig at all before cutting the second circle. This allows for a small clearance between the outside of the tube and the inside of the tube box (14 3/8). I welded mine from steel square tubing. For about $3 we can buy a tank valve kit that has a threaded 2" i.d. Trim off any unused fabric along the base. the nylon screws going up from the bottom, but I found the knitting PVC pipe makes great drawtubes. This might have been tempting if I wanted to build a 6 inch scopeat that size, they say that first-timers do pretty well at grinding and figuring their own optics. 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. To view, go here: http://emediadesigns.com/focuser/ I found a used 16 primary on eBay. If you want a Crayford focuser with a knob instead of turning the draw tube, then Jerry Oltion's designhttp://www.jerryoltixycrayfords.htm using box frames and knitting needle drive shafts is also a fairly easy build. Community Forum Software by IP.BoardLicensed to: Cloudy Nights. Once Id built a CNC router, I embarked on my third telescope, featuring a 16 primary mirror with aluminum trusses, wide vertical bearing arcs, a steel front-adjustable mirror cell, and a rotating base. Once you get it working, there's some calibration you need to do. If you connect the 12V power with the barrel connector (right side of photo), the Nano should light up without the USB connection. You need to order it sized for your focuser shaft size. Because mirror flexure can distort an image, supporting the mirror properly involves building a flotation cell. This simple homemade device will reduce star trails far better than if the camera was mounted on a tripod alone. Gift the gift of Make: Magazine this holiday season! And for those who like to work with 3D printers, both the single speed and dual-speed versions could easily be printed. The little app is simple and works great. Not sure if it is available in the USA. Use mild soap and distilled . 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 used the "LEDandBuzzer" and "TestStepsDRV8825" tests. These have slop as you change direction, you can't do fine adjustments, they weigh a ton, and can flex alarmingly over time. They're fairly Two of the holes for the bolts were blocked by knobs. Use the externalMirror Edge Support Calculatorto decide whether to use a two-point, four-point (whiffletree), or sling support. Similar photos at http://www.telescopegeek.com/gallery.htm require 100+ minute exposure times on his 20" telescope and $3200 camera. Most people will want a knob on You really need a step ladder even for my 10" when pointed overhead. 5 weeks after I had ordered the mirror, I called to ask about its status. Perfect for visual observations with very heavy mirrors. After another 3 weeks, I was concerned that I had not received the mirror. Crayford focusers are considered superior to entry-level rack and pinion focusers, normally found in this type of device. Deep space photos like these require HOURS of exposure for each one. the interior diameter is just a nudge over 2". Robert is a super guy and more than willing to help those who choose to follow in his footsteps. Funny how the bigger they are the better for dobs. 3D Printed Futuristic Space Age Wall Clock, http://www.cloudynights.com/ubbthreads/showthreaded.php?Cat=0&Number=4721255. After the glue dried but before the clamps were removed, I added corner braces to all four corners of the tube using glue and brads to hold them in place. 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. To get this arc, I actually moved the radius of the jig in by 1/8 inch. i am not trying to win this contest with photos. Ideally, the spacer would be 1 inch long and have a smaller diameter, but I didn't get this one right the first time. I was inspired to build telescopes during a trip out to McDonald Observatory in west Texas, where I saw a 36 fork-mounted telescope, tiny in comparison to the huge research telescopes at the site. that is a great website that guy has some fantastic photos. It has a 6mm shaft. Someone is pulling someone's leg here. While I will freely admit that most astro-photography is WAY beyond me, you certainly do NOT need a $3200 camera to do so. 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. 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. I will get good 30-40 mm focusing range. This unit takes signals from your computer and drives the stepper motor on the focuser. I decided that my best option was to scale up their 8 inch design for a 12.5 inch scope and sacrifice the portability and easier storage of a truss scope for something that I felt confident in building myself. A couple setscrews and you're up & running with an off the shelf solution. experimented with various wires and rods and eventually decided that a Obviously an open truss telescope. Over how many nights did this photography session take place? My first telescope I built was a 10" F8. I will have a lot of fun building my homemade 12.5 inch Dobsonian Telescope!!! All that remained was to design and print a bracket, and buy the needed parts. This project is based on Robert Brown's "Arduino ASCOM Focuser Pro2 DIY". This is where you will use screws to strongly attach the focuser onto the tube. To place the primary mirror, I installed the secondary and installed the primary in the mirror cell. After looking at many focuser options with a big range of prices, I decided to order a GSO 2 speed Crayford focuser from ScopeStuff. It is not very powerful, it will not supply enough torque if you put any load on it or have a heavy optical train (like I do) and the focuser has to "pull" it upward when the telescope is vertical. Put it all together microcontrollers including Arduino and Raspberry Pi, Drones and 3D Printing, and more. control. narrow the frame. Please explain, in detail, how you attached your tube to the very unique drive system of an XT12G mount. Before I wrapped the tube (and before I discovered the problem with the primary placement) I determined the balance point on the tube. I attached keepers 1 inches wide by 5 inches long, extending above the bottom of the arcs by about 1 inches. The sides were attached with wood glue and clamps with a few small brads to hold everything in place. In my build, the cage was cut on a CNC router from plywood, with threaded T-nuts added to support a truss assembly. Post 10 of the same LSDF focuser thread also links to Art Bianconi's archived 2008 original flush valve focuser posts. After cutting the circles for the side bearings, I set up the jig to cut the curved edges of the rocker sides. I did find, though, that the 3D printed gear would slip on the shaft, so it needed a set screw. We all know the problems with focusing. The cell from Anttler's, for which I had received a refund, had arrived. On that noteWARNING:do not look directly into the sun and never point a telescope into the sun without proper filtration you can damage your telescope and burn your retinas and possibly go blind i am not a astrophotographer so i cant comment on the quality of the pictures since there is so much doubt on the photos i will gladly take them down. While a sling or whiffletree provide the best edge support, a two-point edge support is much easier to construct. 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. Sew the seam, and sew an elastic cord into the top to secure it to the secondary cage. 11 years ago Please feel free to email me at the address on the right. Since my focuser shaft is 6mm, I ordered the coupler shown here in the 6mm to 8mm version from Amazon. The scope including the optics, truss tubes, and eye pieces all stored in a single box making it easy to store and transport by car, but it was a little too big to fit in the overhead compartment or under the seat on most aircraft. Share it with us! Picture of DS-4. The day I received the refund, I ordered a mirror cell from University Optics. I wanted the long focal length for good contrast. you could probably space the bearings 3/4" apart instead of 1" and mount can't click on it or copy and paste it; it's a graphic file to thwart Once I had my design set, I was ready to buy the parts. Here's a detailed response from a thread at CloudyNights:http://www.cloudynights.com/ubbthreads/showthreaded.php?Cat=0&Number=4721255 "The image scale is wrong on the M31 image, fits too much of the galaxy in for even a 35mm chip. A bit of a monster! Today I purchased what is called atank nipple in India. #@$%^#@!!!!! But -- you have to be careful that the mechanism is true and the motor does not have a load on it at any time, otherwise it will 'stall' and stop moving. Thanks for the great comment. Finally, attach your polar alignment device and align it with the hinge. Some of the very best planetary and deep sky pics I have seen have come from a Fuji S3 professioanl camera [based on a Nikon body] and a Canon 20Da, which was designed with [I think] a user replaceable inside the mirror box filter for astral photography. I am thankful to enjoy the inspiration, and the details, that you provide, as I will soon be constructing a Dobsonian Telescope. Connect the Arduino USB cable and upload some test sketches. with a genuine question or comment about the design. Im sorry to hear you couldn't make the contest. Helicals are adaptable to both refractors and reflectors, but do not "play nice" with zoom eyepieces because "zooming" becomes a two handed operation to avoid changing focus. Plan ahead by carefully weighing all components and approximating the center mass of the optical assembly. I called to express my concern and was told that it had all been packaged a few weeks ago and that it should have been sent. Drill the holes for the knitting drneilmb, thanks for sharing the focuser design. It is used to setup water outlet from overhead water tanks. PhotoPictureResizer_190723_214534574_crop_2558x3105_copy_1023x1242.jpg. 4 years ago With an outer diameter of 14 3/16, I cut the Tube Box sides 15 5/8 and 14 5/8slightly less than my extra inch extra on each side. They even offered to send the spider, secondary holder, and secondary mirror immediately so that I could begin working on the tube while I waited for the primary. Since there is no drill bit that exactly matches the 13.1mm of the shaft, I had to do some rough enlargement of the hole. 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. After a few weeks of no communication from them, no ability to phone or email them, and no mirror cell arriving. 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. See captioned photos 22-25 here:https://www.cloudyniractor-focuser/ for more detail on building a flush valve focuser, as Bob mentions. I file a dispute with Paypal to begin the process of getting my money back. I told them to take their time and get it right. I pointed it at distant trees and had no problem bringing the image into focus with all of my eyepieces. Since my plan called for purchasing the mirrors and mechanical parts there were several decisions to be made and several vendors to contact. 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. Featured in the February, 2015 issue of Sky & Two inch internal diameter drawtube. This is the first telescope that I have built. Although they don't usually sell these parts, because I had ordered the mirrors from them they offered to sell me the spider and secondary holder that they use in their scopes. The mirror box encloses the mirror cell and allows the entire telescope to rotate vertically. We moved the operation to a nearby park and got a focused image of the most distant trees (300-400 yards away) quite easily. Start with the small components first. And the legs of the base should be as wide as possible to accommodate weight imbalance as the telescope is moved around, to avoid tipping. Position "0" is with the focuser all the way IN (at least for a refractor). The focuser is very smooth. The rocker sides are each made of two identical pieces of inch plywood glued together, creating two sides one inch thick. Orion Dynamo Mini for powering a Nexstar 6SE? By adjusting the bolts, the mirror can be pointed toward the correct spot. Accordingly, with 1.25 focuser, you can use 1.25 eyepieces, with 2 focuser - both 2 eyepieces and 1.25 (through a special . too far. I even began taking careful notes about needed supplies and plans for each piece of the truss tube scope. Share a cool tool or product with the community. This can be shimmed out with paper wrapped around the But who cares, really? The pivot bolt consists of a 1 1/8 inch brass spacer with an 11/16 inch outer diameter, a 3/8 inch bolt 2 inches long, a stop nut, and two large washers. widening the hole. Realizing that it could not be the University Optics cell already, I thought, Noit couldn't be but, in fact, it was. the tube is cardboard as well, you can also get a quality mirror at telescope.com for much cheaper. I set things up in daylight and collimated the scope. You can view and download the full file here. That evening I spent most of my time rediscovering the many DSOs around Sagittarius, especially the Lagoon Nebula and the Trifid Nebula. So I decided to make my own, using my normal "blunder in naively and see what happens" approach to making things. To get a slide-fit in a 3D printed part, you normally make the hole 0.5mm larger than the shaft. Have you made any mods on it since you built it? I attached small felt pads to the inside of the keepers to protect the side bearings from scratches, but discovered that the side bearings would not fit because of the thickness of the pads. ill ask him for a detailed list of what he used and when i get that ill post it here for you. CNC files (optional) Download the Sketchup files. I ended up modifying it a bit after printing. Quick demo of my motorized focuser, and I will create a detailed tutorial if enough people are interested. Make an account on JLCPCB.com, upload the Gerber zip file, that's it! The Crayford focuser is a simplified focusing mechanism for amateur astronomical telescopes. Parts List (the full story of acquiring the parts), The primary, secondary, spider and secondary holderDiscovery Optics. focuser. The lumber yard also gave me a lower price than I expected. An electronic focuser, which moves the focus knob through a combination of hardware and software, solves this problem. But, especially on cold evenings, the focus may go out in the middle of the night. And bolt to scope I am working on a diy focuser design for my 6" F/8 telescope and asking suggestions for simple focuser. (actually, it ended up a smidge more than 2 inches) Lighter than the existing focuser. One of the neat things about the square design is that the 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. All i did was supply the telescope as far as his camera equipment i dont know what he used i never saw it all i know is he had my scope for about a month while i was traveling and he gave me these photos. small, it's surprisingly rigid. I did not glue the bearings to the tube box in case I needed to adjust the position later. DIY Craford Focuser. This is my copy of the telescope that Sir Isaac Newton presented to the Royal Society of London in 1671, and is considered to be the first successful reflecting telescope. The specific hardware used for this is described on the Building page. 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. : "http://www. I had chosen a boxy, rigid design for the binocular scope, so This scope was originally made as a travel scope using an eight inch mirror that I ground and polished at the St Pete Astronomy Clubs Mirror Lab. (Sorry you This combination has the best resolution (steps/revolution), so I didn't see any reason to build anything else. This combination has proved to be effective for all positions except when the tube is pointed directly up. If you look in the FILES area on Robert Brown's site (see link above) you will see a sub-folder "3D Printed Parts". Thanks Pinbout for sharing your design. Homemade astronomy. This cost around $100 to build and all of the components came from. curated by us, the people behind Make: and the Maker Faire. If the telescope rotates forward or backward on its own, then the mirror box is too deep or too shallow. See above, this motor does not produce a lot of torque, but you don't need much for this application since there is no 'load' on the focusing shaft. This extra space would allow the tube to be repositioned within the tube box to rotate the eyepiece or balance the tube. This design could be adapted to practically any telescope or focuser, so I've kept my outline on the project brief. Total cost for supplies for this project: It took a lot longer than I expected to receive my mirror and other parts from Discovery. Keeping with the 'simple ' part of your request, here is a helical 2"/1.25" focuser made from std plumbing parts. Measure twice, drill I was concerned that it would be difficult to find, but I was able to order it from a local woodworking shop. eyepiece on the ground (or worse, on your primary mirror!) crafts, science & engineering, design, and technology. Upload that main sketch to the Nano. knitting needle where it goes through the hole, so it's not a big deal, I found out pretty quickly that building my own telescope would only be a bargain if I made my own mirror and mechanical parts. I particularly like that the design can be integrated directly into the focuser board to make a very, very simple UTA. } 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. Two such companies would not give me a price because the order of a single tube was too small. Part numbers 351-4574 and 336-422. In the "ARDUINO FIRMWARE" folder, in it you will find a ZIP file "myFP2-Firmware 312-1.zip". Before attaching the sides and front to the bottom with wood screws, I wanted to make sure those screws would not interfere with the Ebony Star ring that would be attached to the rocker bottom. I have built a homemade electric focuser for my Celestron 8SE using a radio control hobby servo and some spare parts. A Pocket Sundial From a Broken Pocket Watch! I Hope to give you ideas if you are thinking about building one for yourself! I had already made a lightweight focuser for I'd be willing to bet that you could easily grind your own 12.5 inch next time and save some $$. 10 inch or 12 inch. When I looked at the costs, I seriously considered buying an Orion telescope instead of building my own. Once built, line the undersides of the arms with textured ABS plastic as a bearing surface. This arrangement turns 100% true, no wobble. 8 years ago Able to shift heavy loads of kit ie over 1000g. Focuser minimum height is 50 mm and maximum a little over 90 mm so it is good overall. . Rock Paper Scissors Using Tinkercad Circuits and Arduino, Punchy the MECH & the Autonomous Fight Club, PCB (printed circuit board) - download the, DRV8825 - stepper motor driver chip/board - again, clones available on. The telescopes size is classified by the size of its mirror. Concluding that I would not be able to buy a tube off the shelf, I found a couple of companies that took special orders on cardboard tubes. We then spread contact cement over the remaining veneer and tube surface, waited for the glue to dry, and carefully rolled the tube over the veneer. All in all it seemed like a pretty robust design, so I gave it 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. The blue pieces of the rocker box and ground board are arranged as in the diagrams in (figure 2). In amateur astrophotography, we run our telescopes overnight. This focuser (see pic at bottom) was motorised by me several years ago, but the motorised system didn't give me very fine control, and the motor running at fast speed tended to make the Artemis camera crash. in the tube so they'll hit the knitting needle before your drawtube runs I only do functional. The silly colours are mainly due to me experimenting with various clothes dyes in the anodising. flexing. I waited until dark and pointed the scope at the sky. And a flat thing to put it all on The belt and pulleys are off-the-shelf items available on Amazon. Able to make myself using my own humble tools (or toys as the pros will call them!). Able to make myself using my own humble tools (or toys as the pros will call them!) The motor is much lighter than the geared motor. But let me see what items I can arrange to make a helical. During assembly, youll attach the trusses to the mirror box, then sit the secondary cage on top and bolt everything in place.

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