you don't need to paint it (or worry about paint flaking off it). 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. Not worth the effort, price is tooo high. 10 years ago 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. It features 2 semicircular arms, and mounting points for the trusses (T-nuts are fine), as well as a lid to keep the mirror safe when the telescope is not in use. This extra space would allow the tube to be repositioned within the tube box to rotate the eyepiece or balance the tube. knob, and a drill press to make sure the hole for the knitting needle 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. 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. can't click on it or copy and paste it; it's a graphic file to thwart DIY Craford Focuser. (actually, it ended up a smidge more than 2 inches). I had the thought that as long as I was going to build it I should build it as big as I could afford. CNC files (optional) Download the Sketchup files. The diameter of the focuser is usually indicated in inches. var gaJsHost = (("https:" == document.location.protocol) ? This motor is available on Amazon. Their step by step instructions were invaluable to me as I built this scope. 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. together tech enthusiasts, crafters, educators across the globe. - Bill. and hope it doesn't fall off It has reminded me of one of my long term aims to make a telescope that has been buried by the demands of the rest of my life! Make the hole diameter fairly snug, too. All Orion 1.25" and 2" telescope focusers are engineered to provide smooth drawtube action to ensure you hit the exact focus point . One of the companies I had considered as a supplier for the primary mirror was Anttler's Optical. They have many items for ATMers and I had frequently visited their website when planning my scope. Not sure how your toilets are built over there, but here they use what is called a tank flush valve. Ask Question Step 5: Stepper Motor Choice #2 - NEMA-17 Geared Stepper Motor If your optical train is heavy and the focuser has to bear it (see above) then this motor may be a better choice. homemade Crayford focuser. adapter set screws to slide into. 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. scope, I only put knobs on the outsides. . 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. If you're not using heavy eyepieces, you probably don't need This means I can use FocusMax to do the focusing. I knew that I would be returning the mirror cell to them, but just for fun I decided to see how it would fit in the tube. 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.
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