ATM, Optics and DIY Forum
Amateur Telescope Making (ATM) and any do it yourself related activities. Ask questions, discuss and post pictures of telescope related projects, optics, telescopes, observing chairs, etc.
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3D Printed AstronomyStarted by Gazpacho , 25 Apr 2020 ![]() |
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Post your Optical Design! (This is a no-discussion thread!)Started by Sean Cunneen , 05 Nov 2019 |
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Post your home made scopeStarted by droid , 22 Jan 2013 |
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Best of ATM and HelpStarted by MMICKELS , 02 Jul 2005 |
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Trying something odd.Started by aandeg , Today, 03:59 PM |
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My 20in f/3 projectStarted by Fivemileshigh , 21 Apr 2023 |
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Orion Optics UK - disheartening "story"Started by Dodde , 31 Jan 2021 ![]() |
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Has anyone converted a CI700 to Onstep?Started by calypsob , Yesterday, 11:32 AM |
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Condition of secondary on new 8" dobStarted by Chatonka , Yesterday, 04:14 PM |
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PnP Focus: The simplest-ever Arduino focus controllerStarted by anat , 11 Oct 2017 |
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Problems installing PLOPStarted by jpcannavo , Today, 09:23 AM |
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any ultra-compact scopes with truss clamps outside mirror box?Started by symbiosis , Yesterday, 12:22 PM |
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150mm F5 Spherical MirrorStarted by brentelgeuse , 24 Sep 2023 |
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EMS angle calculator?Started by bokemon , 26 Sep 2023 |
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Ross Null software not workingStarted by Pierre Lemay , 26 Sep 2023 |
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Need help with new Barlow lens on RefractorStarted by JSTAR0057 , Yesterday, 07:44 PM |
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32650 vs 38120 - which is a better Lifepo4 Cell?Started by calypsob , 19 Aug 2023 |
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Use old record instead of Lazy SusanStarted by starfinder123123 , 24 Sep 2023 |
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Motor controller with autoguiding capabilityStarted by CrossoverManiac , 26 Sep 2023 |
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can someone PLOP for me?Started by wells_c , Yesterday, 02:24 PM |
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I Need Help Figuring My First Mirror, an 8”f/8Started by ClayDavies , 10 Feb 2022 ![]() |
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recirculating polishing slurry with a pump?Started by GilATM , 22 Sep 2023 |
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Edmund Optics achromat for small refractor?Started by Fivemileshigh , 25 Sep 2023 |
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Fully functional, easy to use, zero gravity bino-chairStarted by dpselinger , 28 May 2023 ![]() |
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EQ6/NEQ6 latitude adjust endcapsStarted by Rudi Bjoern , 04 Sep 2023 |
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help-with finishingStarted by mtsaz , 25 Sep 2023 |
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Seeking ideas for "weightless" elevation stage on a tripod (like a parallelogram)Started by bokemon , 16 Sep 2023 |
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9.5" Telescope polishing help.Started by balac , 16 Sep 2023 |
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16" or 18" truss NewtonianStarted by Mitchell Duke , 13 Sep 2023 |
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What did you work on today?Started by Sean Cunneen , 18 Feb 2015 |
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Easy detection and correction of astigmatism in primary mirror makingStarted by Celestial825 , 11 Jun 2023 |
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Celestron and Meade SCT optical differencesStarted by Jaylab , 21 Sep 2023 |
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Are you using an eyepiece projector as a variable barlow?Started by dvijaydev46 , 26 Sep 2023 |
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Mirror Recoating SourcesStarted by aerobob427 , 15 Apr 2023 ![]() |
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front collimation through light baffle?Started by symbiosis , 22 Sep 2023 |
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Thin mirrors are they good?Started by Mitchell Duke , 25 Sep 2023 |
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Spent the last decade learning/working in precision machining and 5 of them I owned telescopes. Just realized I can make telesc...Started by maknswarf , 24 Sep 2023 |
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Meade LXD75 AR-5 2" Focuser recommendationsStarted by Vim Fuego , 26 Sep 2023 |
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Compact 12" f/5Started by symbiosis , 19 Jun 2023 |
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Pinched secondary from flocking?Started by Dan_I , 24 Sep 2023 |
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Celestron sct secondaries, spheres or aspheres?Started by davidc135 , 10 Jun 2022 |
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150mm f16 Stevick-Paul mirror making and buildStarted by hamishbarker , 07 Jun 2023 |
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Shafer Schiefspiegler with Houghton-type corrector?Started by hamishbarker , 09 Sep 2023 |
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8" F14 Cass/RC BuildStarted by Matthew Paul , 19 Nov 2022 |
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PiFinder - Open source, self contained, plate solving finder for DobsStarted by brickbots , 01 Mar 2023 ![]() |
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DIY 3D Printed Full GoTo Star Tracker Mount - Powered by OnStepStarted by GuitsBoy , 08 Jun 2022 ![]() |
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Setting focus offset for temp dropStarted by CA_Garcia , 22 Sep 2023 |
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Getting double images when I see through my home made 114/900 reflectorStarted by sanojs , 31 Aug 2023 |
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Question about motorizing my diy dobsonianStarted by alseltas , 21 Sep 2023 ![]() |
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Is binocular SA corrected in the objective or eyepieces?Started by Fivemileshigh , 23 Sep 2023 |
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