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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.

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Cloudy Nights Announcements

News from the Cloudy Nights team pertaining to the website and forums

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Happy New Year to all! - last post by Scott in NC

Discussion of CN Articles, Reviews, and Reports

A place to discuss the articles posted on Cloudy Nights

Forum moderators: Dan Crowson, The Ardent
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Review of iPolar hardware a... - last post by Brizius233

Celestial Events

Welcome to Celestial Events, a bulletin board for announcements about currently or soon to be observable astronomical events. Need a finder chart for that bright comet? Want to know when the next meteor shower will peak? Looking for suggestions on what to observe? Visit regularly for answers to all your questions about what's happening now in the celestial show.If folks want to discuss these events, the staff of Cloudy Nights invites you to start or join a thread in the appropriate observing forum. Celestial Events is for announcements only.

Forum moderators: Dave Mitsky
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January 2022 Celestial Cale... - last post by Dave Mitsky

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Beginners Forum (No astrophotography)

A place for new astronomers to ask visual observing or basic equipment questions and report their findings.
- Advanced or specialized topics should be discussed in their dedicated forums.
- Beginning astrophotographers should read, and then post, in whichever imaging forum is most appropriate to their subject.

Forum moderators: GUS.K, nicknacknock, Wisconsin Steve
  • 33,181 topics
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OneSky Newtonian - Astronom... - last post by davstrom

General Observing and Astronomy

General Observing and Amateur Astronomy topics and questions that do not fit into our other forums. This includes unaided eye observing (satellites, weather, auroras etc) and non equipment topics (LASIK, observing sites, dressing for the cold/hot etc)

Forum moderators: csa/montana, spereira, Uwe Pilz
  • 13,074 topics
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How exactly does one go abo... - last post by thecelloronin


The official forum for the Astronomy Outreach Network. Post questions about Outreach, suggestions or even just publicize your Outreach events. If it has to do with promoting our great hobby, it goes here!

Forum moderators: CltFlyboy, Ladyhawke, mdowns
  • 1,167 topics
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Telescopes just for public... - last post by HagglePig420

Light Pollution

While CN does not typically allow politics, this is one forum in which the discussion of legislation dealing with this matter is permitted. This is a problem that will eventually affect all of us to one degree or another.

Forum moderators: csa/montana, Napp, osbourne one-nil
  • 2,217 topics
  • 29,055 replies
Post Your Pain Here - last post by ABQJeff

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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, Jared, Sean Cunneen, rgsalinger
  • 23,258 topics
  • 385,862 replies
Refractor Build with iStar... - last post by BGRE


"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

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Any suggestions about where... - last post by John SC


Binoviewer discussion forum

Forum moderators: Ladyhawke, nikm, noisejammer, spazmore
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  • 58,480 replies
What is this piece for - last post by mich_al

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).

Forum moderators: gustavo_sanchez, jerahian, mewmartigan, MJB87
  • 21,285 topics
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Santa 150MCT with Antares F... - last post by Matthew Star

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.

Forum moderators: CltFlyboy, Jared, Sean Cunneen, mdowns
  • 16,207 topics
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Old Unitron Focuser Screw H... - last post by jragsdale


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: Jared, mewmartigan, MJB87, rgsalinger
  • 37,439 topics
  • 420,074 replies
Celestron Dew Heater ring f... - last post by trigger


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

  • 35,334 topics
  • 657,067 replies
Seeing Eye floaters based o... - last post by TOMDEY


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, imtl, MJB87, sbradley07
  • 38,854 topics
  • 450,099 replies
Planewave L-350 - last post by PABresler

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: imtl, MJB87, nicknacknock
  • 1,614 topics
  • 22,827 replies
Reducer/Field Flattener combo - last post by GeezerGazer


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, Ladyhawke, MJB87, nikm
  • 6,680 topics
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Roll of roof vs Dome when i... - last post by stargazer32864


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

  • 24,277 topics
  • 405,224 replies
Does Anyone Know If... - last post by stargazer32864


A forum for discussing refractor telescopes.

  • 32,165 topics
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Omegon refractor AP 110/660 ED - last post by Matthew Star

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Major & Minor Planetary Imaging

This forum is intended for discussion related to the imaging and processing of anything in the solar system other than our sun and our moon. Solar imaging discussion should occur in the target-oriented “Solar Observing & Imaging” forum. Posts about imaging our moon should go in the target-oriented “Lunar Observing & Imaging” forum. Aesthetic Deep Sky Object Imaging should generally be discussed in the Beginning or Experienced DSO Imaging Fora.

Forum moderators: Sean Cunneen, nikm, spereira, TimN
  • 45,557 topics
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A proposal for an FAQ for t... - last post by DJL

Beginning Deep Sky Imaging

This forum is intended for discussion related to beginning Deep Sky Object (DSO) imaging using any type of camera or mount. If you are interested in specialized or more sophisticated DSO techniques or are interested in imaging non-DSO targets please start your topic in a more appropriate forum.

Forum moderators: jerahian, nicknacknock, nikm, TimN
  • 62,311 topics
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NGC281 Pacman from a moonli... - last post by radiofm74

Experienced Deep Sky Imaging

This forum is intended for discussion about practice & theory related to prime-focus Deep Sky Object (DSO) imaging through a telescope using any type of camera. If you are a beginner or interested in more specialized types of imaging, please use the appropriate forum.

Forum moderators: Dan Crowson, imtl, sbradley07, TimN
  • 53,504 topics
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IMX455 Chip (ASI6200MM/QHY6... - last post by andysea

DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging

This forum is for more advanced discussion about accessories, techniques or approaches to astrophotography with general purpose (not astronomy dedicated) digital cameras. Topics include (but are not limited to): advanced afocal approaches, minimalist & camping rigs, nightscape photography, accessories & modifications. Discussions involving prime focus imaging with general purpose cameras can certainly occur here, but are also welcome in the Beginning or Experienced DSO Imaging Fora.

Forum moderators: Napp, rgsalinger, spazmore, TimN
  • 47,081 topics
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Star Clusters in M51? - last post by bcall

Film Astrophotography

Discussions about astrophotography using film.

Forum moderators: Ladyhawke, mewmartigan, Uwe Pilz
  • 2,584 topics
  • 18,006 replies
Hasn't changed much - last post by Giorgos

Electronically Assisted Astronomy (EAA)

Electronically Assisted Astronomy (EAA) is the use of an analog or digital image capturing device in lieu of an eyepiece at the telescope. Here members can talk about the equipment used, share their observing experiences, and post sketches and images captured with EAA devices.

Forum moderators: alphatripleplus, jerahian, Sean Cunneen
  • 8,308 topics
  • 124,566 replies
EAA System--Now In Place (m... - last post by Tfer


A forum for the discussion of sketching stellar objects, and displaying user drawings.

Forum moderators: frank5817, mdowns, Uwe Pilz
  • 13,276 topics
  • 123,499 replies
Impressions of the Helix - last post by nof

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Solar System Observing

A friendly place to discuss planetary & solar system object observing.

Forum moderators: GUS.K, gustavo_sanchez, Napp
  • 8,720 topics
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Observed Ariel! - last post by Allan Wade

Lunar Observing and Imaging

A forum dedicated to the observation and appreciation of our Moon. Join us in the Lunie Bin and learn about the only world other than the Earth to bear the imprint of human feet. Images and sketches are most welcome. (Please limit the size of image files to 500K.)

Forum moderators: frank5817, gustavo_sanchez
  • 7,714 topics
  • 58,895 replies
Aristarchus and Vallis Schr... - last post by Max Astronomy

Deep Sky Observing

A dark place to discuss deep sky observing and observations

Forum moderators: cuzimthedad, imtl, spereira
  • 9,627 topics
  • 116,547 replies
A winter's tale: a nigh... - last post by musikerhugh

Double Star Observing

Double Stars, Rayleigh Limit and Dawes Limit; a place for observers with split personalities.

Forum moderators: imtl, Uwe Pilz
  • 3,941 topics
  • 41,365 replies
Some Doubles in Open Cluste... - last post by Rustler46

Solar Observing and Imaging

Hot place to discuss solar observing and imaging topics

Forum moderators: GUS.K, gustavo_sanchez, Jared, Napp
  • 34,595 topics
  • 272,324 replies
A lovely prom - 1:20 hour a... - last post by ilan_shapira

Scientific Amateur Astronomy

A forum where amateurs can discuss their contributions to fields such as spectroscopy, photometry, astrometry, interferometry, and radio astronomy. Astronomical objects of interest may include variable and carbon stars, pulsars, supernovae, AGNs, exoplanets, asteroids, and short-lived energetic phenomena such as GRBs. The presentation of quantitative observational measurements, techniques used for acquisition, and relevant ensuing discussion are especially welcome.

Forum moderators: GUS.K, mewmartigan, rgsalinger
  • 1,824 topics
  • 13,687 replies
TYC 1761-2130-1 carbon star... - last post by Chris K

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Celestron Computerized Telescopes

Discussion forum for Celestron computerized telescopes and mounts using NexStar and StarSense technologies, including CPC, CPC Deluxe HD, NexStar SE/SLT/Evolution, etc.

Forum moderators: GUS.K, nicknacknock
  • 17,119 topics
  • 205,528 replies
Making the EVO mount more r... - last post by Noah4x4

Questar Forum

A forum for discussing Questar and Quantum telescopes

Forum moderators: spereira, Wisconsin Steve
  • 2,327 topics
  • 27,495 replies
Questar 5: Updates - last post by Optics Patent

Meade Computerized Telescopes

A forum to discuss advanced Meade scopes. Among them the ETX, LX90, LX200, LX200 GPS, RCX, and the LX200 ACF series.

Forum moderators: CltFlyboy, osbourne one-nil
  • 10,702 topics
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ETX DSLR rear port support - last post by michael8554

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Astronomy Clubs, Star Parties, Shows, & Conferences

For discussion and announcements of astronomy club meetings, star parties, astronomy conferences and other events.

Forum moderators: Dan Crowson, Napp, spereira
  • 3,847 topics
  • 97,634 replies
Practical Advice for First-... - last post by MJB87

Astro Art, Books, Websites & Other Media

A place to share your astronomy artwork (non-photographic) and *non* commercial astronomy websites and discuss astro related books, magazines, charts, movies and TV shows.

Forum moderators: imtl, spereira, The Ardent
  • 5,050 topics
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Recommendation- book for lu... - last post by Daniel Mounsey

Astronomy Software & Computers

This is the place to discuss all things associated with computers & gadgets, both hardware and software (including PDAs, smartphones, tablets, laptops, astronomy programs and apps, Celestron SkyScout and Meade MySky devices, etc.) -- as they relate to astronomy.

Forum moderators: alphatripleplus, Napp, rgsalinger
  • 9,401 topics
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Sharpcap crashes - last post by LuscombeFlyer

Science! Astronomy & Space Exploration, and Others

Discuss all science topics, particularly the sciences relating to Astronomy and Space Exploration. This includes all the natural sciences: Physics, Chemistry, Geology, and Biology. They can include applied sciences such as engineering and construction as well. Wherever the scientific method is used, you can discuss it here. As always, no politics, pseudo-science, crack-pottery, or anti-science.

Forum moderators: cuzimthedad, FirstSight, Uwe Pilz
  • 5,990 topics
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NASA James Webb Space Teles... - last post by dswtan

Space Rocks

This is the place to discuss meteorites and related subjects - including tektites, impact theories, and parent bodies. Got a question about collecting or caring for your meteorites? Ask it here.

Forum moderators: jerahian, mdowns, TimN
  • 1,255 topics
  • 11,223 replies
1/12/22 Gold Basin Meteorit... - last post by lee14

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Cloudy Days & Microscopes

This forum is to discuss birding and other daytime or indoor terrestrial usage of optics, and related equipment; e.g. microscopes.

Forum moderators: Sean Cunneen, sbradley07
  • 1,627 topics
  • 23,098 replies
Birding Resources e.g. Foru... - last post by raa

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Vendor and Group Announcements

A place for vendors and non-CN related organizations to post announcements.

Forum moderators: GUS.K, osbourne one-nil, rgsalinger
  • 6,253 topics
  • 47,454 replies
StarNet v2 - last post by nekitmm

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