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CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Equipment Discussions

Discussion about telescopes, mounts, eyepieces, etc


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.

Forum moderators: cuzimthedad, rgsalinger, Sean Cunneen
  • 21,905 topics
  • 361,142 replies
Peter John Smith and the Wa... - last post by Bob4BVM


"Best Of Binocular" Library, How to Choose, Equipment Minireviews, Observation Reports, Testing Aspects, Aberrations and Deficiencies, Books, Binocular Mounts, Observing Lists, Exit Pupil vs Eye Pupil, Binocular Vision and more

Forum moderators: Erik Bakker, Uwe Pilz
  • 17,980 topics
  • 270,391 replies
Vintage Binolux - last post by harbinjer


Binoviewer discussion forum

Forum moderators: junomike, nmoushon, noisejammer
  • 5,213 topics
  • 55,362 replies
The Zeiss Primo Star Binovi... - last post by Spartinix

Cats & Casses

A forum for discussing Cassegrain (Classic Cassegrain, Ritchey-Chrétien, Dall–Kirkham, etc) and Catadioptric telescopes (Schmidt and Maksutov Cassegrains, ACF, Edge HD, etc).

  • 19,893 topics
  • 300,555 replies
Deforking my 8" SCT...... - last post by spartan1

Classic Telescopes

Telescopes from an era gone by. The place to discuss older telescopes. Antiques, flea market finds, and scopes from grandpa's attic. From the 1780's to the mid-1990's - refractors, reflectors, and early SCT's. Discussing all aspects of restoring, collecting, and observing with older scopes. Discussion of 25-year-old scopes still in production is OK but please don't post newer examples of those, except for actual side-by-side comparisons to demonstrate detail changes.

  • 15,359 topics
  • 407,409 replies
I'm sick.  High winds d... - last post by litesong


A forum for any general equipment discussion, accessories and a great starting point if you are not sure where to post that burning question about equipment. You may get better answers to specialized questions in other fora (astrophotography, mounts, etc).

Forum moderators: imtl, MJB87, rgsalinger, Stelios
  • 33,189 topics
  • 376,135 replies
You people are enablers. - last post by Dynan


A place to discuss our favorite eyepieces and eyepiece accessories, barlows, filters, etc.

  • 33,557 topics
  • 609,110 replies
Celestron 93573 twist lock... - last post by Lwbuck


A Forum to discuss all types of mounts and mount accessories - including computerized, manual, GEM, fork mount, parallactic, alt-az, DSCs, PushTo and GoTo systems.

Forum moderators: alphatripleplus, Jaimo!, MJB87
  • 35,546 topics
  • 407,444 replies
Celestron 127 Mak on CGEM I... - last post by bakernyc

Night Vision Astronomy

Night Vision Astronomy is astronomy performed with analog or digital devices capable of producing a real time view of celestial objects. This forum allows discussion of the equipment, its configuration and use, observing reports made using the devices, techniques for image capture, and the sharing of images the observer made to record their observations.

Forum moderators: Jond105, Starman27
  • 1,310 topics
  • 19,034 replies
Filter size for night vision - last post by Jeff Morgan


A forum for discussing the ins and outs of current observatories as well as sharing designs, and ideas. Manufacturers and Vendors are invited to attend.

Forum moderators: Dan Crowson, MJB87, nmoushon
  • 6,227 topics
  • 118,804 replies
Just Installed ExploraDome... - last post by kathyastro


A forum for discussing Newtonian type reflecting telescopes (including Schmidt and Maksutov designs as well as Herschelian, Off-Axis, etc).

  • 23,035 topics
  • 381,875 replies
Help with ONTC 8" f/4 c... - last post by bokemon


A forum for discussing refractor telescopes.

  • 30,216 topics
  • 653,320 replies
My first Tak! - last post by Scott in NC

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

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