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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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Change in Feedback Forum lo... - last post by nicknacknock

Discussion of CN Articles, Reviews, and Reports

A place to discuss the articles posted on Cloudy Nights

Forum moderators: Dan Crowson, The Ardent
  • 2,516 topics
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FIELD TEST:  CARL ZEISS APO... - last post by buddy ny

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 2021 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: Jond105, spereira, Starman27
  • 32,044 topics
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Bushnell NorthStar GoTo Mod... - last post by AngGalindo

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, Jond105, spereira, Uwe Pilz
  • 12,489 topics
  • 235,069 replies
william 2 " dielectric... - last post by COPNJAX


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: Cotts, mdowns, Starman27
  • 1,080 topics
  • 15,866 replies
Northeastern US (Maine) Dis... - last post by Greyhaven

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, MJB87, osbourne one-nil
  • 1,998 topics
  • 25,422 replies
Another viewpoint on Starlink - last post by LDW47

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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, rgsalinger, Sean Cunneen
  • 21,909 topics
  • 361,262 replies
17.5" f/4.5 Truss Tube... - last post by Brisby2


"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
  • 17,987 topics
  • 270,474 replies
Interesting comparison 6X30... - last post by oldtimer


Binoviewer discussion forum

Forum moderators: junomike, nmoushon, noisejammer
  • 5,214 topics
  • 55,373 replies
Help me with what I need fo... - last post by rexowner

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).

  • 19,895 topics
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ETX 125 Modified * - last post by Jae

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.

  • 15,366 topics
  • 407,586 replies
1976 Edscorp 4" f/15 wi... - last post by kaymann


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
  • 33,205 topics
  • 376,375 replies
New Intel 10th Gen NUCs vol... - last post by Starlancer


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

  • 33,570 topics
  • 609,423 replies
Affordable Wide Field EP fo... - last post by JoshUrban


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
  • 35,562 topics
  • 407,673 replies
I'm joining the Losmand... - last post by bikerdib

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
  • 118,864 replies
How tall can I make a pier - last post by robbieg147


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

  • 23,046 topics
  • 382,013 replies
TPO 10 inch F4 / Baader Cor... - last post by Swordfishy


A forum for discussing refractor telescopes.

  • 30,229 topics
  • 653,648 replies
Takahashi FC-76 DCU vs. FC-... - last post by 25585

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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: nmoushon, Sean Cunneen, spereira, TimN
  • 42,825 topics
  • 292,849 replies
Mars and Uranus, 7 Jan 2021 - last post by dcaponeii

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: imtl, nmoushon, Stelios, TimN
  • 54,531 topics
  • 553,169 replies
Balancing the Telescope - C... - last post by DRK73

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, Stelios, TimN
  • 49,000 topics
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Dithering: how many pixels - last post by rgsalinger

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: rgsalinger, Starman27, TimN
  • 45,127 topics
  • 369,963 replies
Rosette Nebula - last post by Stellar1

Film Astrophotography

Discussions about astrophotography using film.

Forum moderators: CharlieB, Erik Bakker, Uwe Pilz
  • 2,539 topics
  • 17,705 replies
Film Advance in Cold (OM-1n) - last post by Achernar

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, Sean Cunneen, Starman27
  • 7,462 topics
  • 108,573 replies
SharpCap Smart Histogram -... - last post by Noah4x4


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

Forum moderators: frank5817, mdowns, Uwe Pilz
  • 12,494 topics
  • 117,694 replies
Mars, January 22nd - last post by stanislas-jean

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Solar System Observing

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

Forum moderators: gustavo_sanchez, Jaimo!
  • 8,326 topics
  • 85,324 replies
Resolving the Galilean Moons? - last post by Astrojensen

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, Umasscrew39
  • 6,386 topics
  • 51,752 replies
My best lunar image so far... - last post by Stellar1

Deep Sky Observing

A dark place to discuss deep sky observing and observations

Forum moderators: CharlieB, cuzimthedad, Jond105, spereira
  • 9,144 topics
  • 108,790 replies
Sky brightness measurements... - last post by Redbetter

Double Star Observing

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

Forum moderators: CharlieB, Jond105, Uwe Pilz
  • 3,608 topics
  • 37,946 replies
19 Lyn - last post by flt158

Solar Observing and Imaging

Hot place to discuss solar observing and imaging topics

Forum moderators: gustavo_sanchez, Jaimo!, junomike
  • 32,044 topics
  • 252,972 replies
Tuning trick for knowing yo... - last post by BYoesle

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: Cotts, rgsalinger
  • 1,628 topics
  • 11,962 replies
My first astronomical obser... - last post by Daniel Malaise

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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: Cotts, junomike, MJB87
  • 16,116 topics
  • 193,425 replies
What to inspect buying a us... - last post by kite55surfer

Questar Forum

A forum for discussing Questar and Quantum telescopes

Forum moderators: Erik Bakker, Wisconsin Steve
  • 2,143 topics
  • 24,755 replies
Leather Case - last post by Gregory Gross

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: osbourne one-nil, Starman27, TimN
  • 10,172 topics
  • 87,074 replies
Found a source for the LCD... - last post by DAVIDG

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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: spereira, Umasscrew39
  • 3,657 topics
  • 94,911 replies
Staunton River Star Party F... - last post by astrogeek64

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: junomike, spereira, The Ardent
  • 4,649 topics
  • 48,915 replies
New Galaxy Log video specia... - last post by galaxyman

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, imtl, rgsalinger
  • 8,285 topics
  • 70,860 replies
Ask everyone, is there any... - last post by sbradley07

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, Dan Crowson, FirstSight
  • 5,554 topics
  • 83,905 replies
Science Jokes - last post by chrysalis

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: mdowns, TimN
  • 1,214 topics
  • 10,956 replies
Interesting documentary on... - last post by Kfrank

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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, Starman27
  • 1,591 topics
  • 22,861 replies
Show your Modern Microscope - last post by j.gardavsky

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Vendor and Group Announcements

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

Forum moderators: CharlieB, osbourne one-nil, rgsalinger
  • 5,867 topics
  • 44,529 replies
New Startup N-Dimensional T... - last post by n-dtech.com

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