tube and nut that fits the outside threads. When you want to focus, you just open the program and press focus.
Tom's Homemade Telescope Page - Issac Newton Scope - Google The next day my wife called me at work to tell me a box had arrived with telescope stuff. Obviously an open truss telescope. Since my plan called for purchasing the mirrors and mechanical parts there were several decisions to be made and several vendors to contact. While round tubing is sturdy, square tubing is easier to work with. 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. Perfect for visual observations with very heavy mirrors. They suggested a construction supply place on the other side of the city that I had not called yet. You can see that my Moonlite focuser was slightly larger than the sides of the tube. All Orion 1.25" and 2" telescope focusers are engineered to provide smooth drawtube action to ensure you hit the exact focus point . I was concerned that it would be difficult to find, but I was able to order it from a local woodworking shop. The cutting diagram in (figure 1) shows how I cut the required pieces from two 60 X 60 pieces of Baltic Birch plywood, one inch thick, and one 5/8. 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. The box should be deep enough to allow the mirror box to swing all the way down. needle to be just a little too flexible for the weight of a diagonal and Shorter thread side will be used to attach the eyepiece. The little app is simple and works great. Here is a link to the main FILES area on Robert Brown's site. A bit of a monster! A smart collection of books, magazines, electronics kits, robots, microcontrollers, tools, supplies, and more
Most people will want a knob on New Creation Tamil 6.96K subscribers Welcome to New Creation Tamil Our Channel include of Guiding Videos: 1.DIY Projects 2.Awesome Ideas 3.Tips You are inter with New Creation Tamil you can enjoy. Until I see photos of this scope setup for these pictures and an explanation of the exact equipment used, I cannot believe that these pictures were taken with this OTA. I am working on a diy focuser design for my 6" F/8 telescope and asking suggestions for simple focuser. After the second call, I received a response that it would be ready at the end of the following week. Share it with us!
Homemade 12.5 Inch Dobsonian Telescope - Instructables It was easy enough to drill a hole and tap threads for a 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. 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. Use the externalMirror Edge Support Calculatorto decide whether to use a two-point, four-point (whiffletree), or sling support. can't click on it or copy and paste it; it's a graphic file to thwart I brought a saw with me so that I cut it in half to fit in my minivan. Just drill holes in both ends and mount the lenses. on Step 1, interesting build, its just like my old Odyssey brand scope from the mid 1990's. The glue should keep the nylon from fraying. was straight so I wouldn't get a wobbly knob. The focuser 'knob' on the Celestron is just a rubber sleeve that usually pulls off easily. This allows for a small clearance between the outside of the tube and the inside of the tube box (14 3/8). More commercial crayford focusers are of a more enclosed form, whereas mine is more "open frame" approach. #2 knitting needle would be just about right. More Homemade Refractor Telescope DIY Erecting Prism Binoviewer Focuser here: Did you make this project? At this point, the scope was pretty much finished. 5 weeks after I had ordered the mirror, I called to ask about its status. The base of the telescope should be a wide, sturdy square or circle of wood with teflon bearing pads matched to the ABS plastic ring of the rocker box. The pieces were cut down to 15 3/8 and 14 3/8, allowing just under 1/8 inch on each side. If the telescope rotates forward or backward on its own, then the mirror box is too deep or too shallow. Step 3The Side Bearings and Rocker Sides. occurred to me that a square turned 45 degrees would give me two flat 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. Plus it comes in black, so I was still doing some construction on the morning of the event, but I succeeded in making first light on that clear, dark night in late July. Along with some silver bits Slide the eyepiece into the focuser and try it out. You need to order it sized for your focuser shaft size. Knitting needles are Be creative! Sonotube (14 inch diameter, 12 feet long): $70, Focuser (GSO 2 speed low profile Crayford): $139, Total cost for supplies for this project: $1700.
The Crayford Focuser and DIY Focuser for Homemade Telescope Thin-wall aluminum tubing is used to attach the mirror box to the secondary cage. I attached three feet equally spaced on top of the ring, and on the opposite side attached teflon pads 1 X 1 directly above the feet using very small brads and countersinking the brads below the surface of the teflon. And for those who like to work with 3D printers, both the single speed and dual-speed versions could easily be printed. Let me see if I can get similar plumbing parts here. Edited by howardcano, 24 May 2020 - 09:29 PM. 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. I ended up modifying it a bit after printing. 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. I installed the spider first, about one inch down from the end of the square end of the tube. I wasn't there so i can be 100% but i do not think my friend was lying to me and i believe the pictures are from my telescope my kids use it for stargazing a lot i have seen some deepspace but i use it mainly for sketching the moon and i like to view solar flares. an inch or so apart, so the focuser body could be pretty low profile. An electronic focuser, which moves the focus knob through a combination of hardware and software, solves this problem. once. Below are cutting diagrams and diagrams of the rocker and tube box with side bearings. A week after they said they would send the secondary and other parts, I called to ask if things had been sent. To cut the circles, I used a router with a straight cutting bit and a circle cutting jig. Please explain, in detail, how you attached your tube to the very unique drive system of an XT12G mount. I would also like to know about how you can take such fantastic pictures without a field rotator and an autoguider system. Carve out a hole on the top part of the sonotube first. 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. It may need some careful coaxing with a screwdriver. It wouldn't be a two-speed design, but if I used a thin enough CNC files (optional) Download the Sketchup files. I even began taking careful notes about needed supplies and plans for each piece of the truss tube scope. focusers for that project. 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. So I was looking for a cheap, light-but-sturdy design for a Participated in the Celestron Space Challenge. Link to the motor speed controller kit:http://www.jaycar.com.au/productView.asp?ID=KC5225(a 5K external potentiometer will be required): http://www.jaycar.com.au/productView.asp?ID=RP3508The drive motor:http://www.jaycar.com.au/productView.asp?ID=YG2734The gears:http://www.jaycar.com.au/productView.asp?ID=YG2736The motor forward/reverse switch:http://www.jaycar.com.au/productView.asp?ID=ST0506The push button:http://www.jaycar.com.au/productView.asp?ID=SP0711 I centered the focuser 8 inches from the top of the tube, using a 2.5 inch hole drilling saw with smaller holes for the bolts that would hold the focuser. Thanks Pinbout for sharing your design. If not, you may need to design and print your own bracket(s), gears, and so on. This book describes in great detail the steps to build a large aperture truss tube dob, focusing on scopes with a 12.5 to 40 inch mirror.
With Simple, Homemade Telescopes, You Can Explore the Stars (Op-Ed) The blue pieces of the rocker box and ground board are arranged as in the diagrams in (figure 2). What materials did you use? This one is based on the DRV8825 driver chip and a NEMA-17 stepper motor. This software creates a model of your telescope by measuring out of focus star sizes at various points. I drew a guide line straight down the side of the tube and cut the veneer to length with one extra inch on each side68 inches long. really stiff and light for their size, and even though a #2 is pretty I told them to take their time and get it right. This unit takes signals from your computer and drives the stepper motor on the focuser. Low, or Zero slop when changing direction. DIY Craford Focuser. His passion is using CAD design and his homemade CNC router to bring large wood projects to life. Parts List (the full story of acquiring the parts), The primary, secondary, spider and secondary holderDiscovery Optics. Download and unzip. I had nearly completed the base and put things together for the first time. This will determine the size of the coupler you will use to connect the stepper motor. Above youll find an interactive 3D rendering of the Sketchup file I used to design and cut all of the parts for my telescope. off the bearings. You need a drawtube of course. 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.) Similar photos at http://www.telescopegeek.com/gallery.htm require 100+ minute exposure times on his 20" telescope and $3200 camera. The focal length of the mirror is 61 inches. I decided to use baltic birch because it is recommended by Kriege and Berry as well as many online sources. I made this Crayford style focuser using plywood scraps and surplus bearings. spambots that search the internet for addresses to send junk mail to.) I applied contact cement to the first inch of the veneer and the mating inch of the tube. Depending on your telescope, one of the Brackets that Robert has may work for you. 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. . widening the hole. 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 cost around $100 to build and all of the components came from Jaycar, except the brackets which were made with 1.2mm sheet metal. forward and back along with the drawtube when you focus, and you'll get A And you can tell it's not a mosaic because the stars at the corners show coma/field curvature artifacts. knob, and a drill press to make sure the hole for the knitting needle I have already seen some designs on CN, Stellafane and web but still checking if someone has recently made anything simpler. Some of these are essential for the basic functionalities of our websites. my 12.5" trackball, but I didn't Save over 40% off the annual cover price for a full year (4 issues) of Make. The wide square footprint would make it pretty stable when mounted to I sourced my own Stepper motor and 1:150 reduction gearbox from RS, who are just up the road. I got a different stain, tested it, and went back to work. I don't have the skills to build a focuser using a. PVC pipe makes great drawtubes. focuser. 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. As I set of the scope, several club members came over to check things out and it was nice to hear the positive comments on the appearance of the scope. There was the expense, for one, but also the If you connect the 12V power with the barrel connector (right side of photo), the Nano should light up without the USB connection. My guess is that photo was taken with a refractor. I pointed it at distant trees and had no problem bringing the image into focus with all of my eyepieces. If you look in the FILES area on Robert Brown's site (see link above) you will see a sub-folder "3D Printed Parts". Install on Windows 10, this part is pretty straightforward. 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. on Step 1, Richards in our local astronomy club. It is size 1.25 inch with a clear inside dia-meter. microcontrollers including Arduino and Raspberry Pi, Drones and 3D Printing, and more. Some quick tips to note if you are making a homemade telescope are: 1. 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.
Homemade Electric Telescope Focuser - Stargazers Lounge Page 1 of 2 - DIY focuser design - posted in ATM, Optics and DIY Forum: Hi I am working on a diy focuser design for my 6 F/8 telescope and asking suggestions for simple focuser. The holes in the main bracket the match the holes in the plate are oversize to allow for this alignment. With adapters for any Meade 1x200-ACF or LS model, and chord to plug into focuser port. (I didn't have the primary mirror yet). But who cares, really? A Pocket Sundial From a Broken Pocket Watch! Once you get it working, there's some calibration you need to do. Attach the ball head to the top board. I decided to keep this tube for now and if I run into problems with it, I can replace it later. Yet I was also becoming infected with aperture fever.
Telescope Focusers | Orion Telescopes: Shop Quick demo of my motorized focuser, and I will create a detailed tutorial if enough people are interested. While I will freely admit that most astro-photography is WAY beyond me, you certainly do NOT need a $3200 camera to do so. Here is what I was working on but looks like I need a better design. I wanted to wrap the tube in veneer because I had seen a homemade telescope on a website that used veneer and I liked the look. This allowed me to cut perfect identical circles. 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. The telescopes size is classified by the size of its mirror. I have no idea how much mail this idea will generate, so I can't There are sub-folders for the different versions. exactly 2" with adhesive labels placed one at a time inside the tube 3D Printed Futuristic Space Age Wall Clock, http://www.cloudynights.com/ubbthreads/showthreaded.php?Cat=0&Number=4721255. I built a second set of electronics, and I had the NEMA 17 Direct Drive motor left over since it didn't work for my Orion ED80T-CF refractor. The silly colours are mainly due to me experimenting with various clothes dyes in the anodising. ill ask him for a detailed list of what he used and when i get that ill post it here for you. If you enter it in the next contest please let me know and i will make sure to vote for you. I used my router to "mill" a flat area for better contact with the focus adjustment rod.
See captioned photos 22-25 here:https://www.cloudyniractor-focuser/ for more detail on building a flush valve focuser, as Bob mentions. Also no obvious diffraction spikes in the m31 photo. It is used to setup water outlet from overhead water tanks. rod for the drive axle it would have a fairly fine motion. The core of the telescope, the steel mirror cell holds and adjusts the heavy, curved primary mirror. This consists of a small black box of electronics. Very simple and portable. Upload that main sketch to the Nano. It turned out that they had an incorrect zip code and the package was still waiting to be sent. The extra force will also When the skies were dark enough for observing I found that the scope moves easily into position and holds that position well. That evening I spent most of my time rediscovering the many DSOs around Sagittarius, especially the Lagoon Nebula and the Trifid Nebula. 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.