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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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Enjoy the July 4th holiday! - 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
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Cosmic Challenge: Alphabet... - 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: DeepSky Di, GUS.K, nicknacknock, WadeH237
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Struggling with vignetting. - last post by CrazyPanda

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)

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Help with the art and scien... - last post by ButterFly


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: Astrola72, CltFlyboy, mdowns
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Where to start? - last post by revans

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.

  • 2,636 topics
  • 34,577 replies
Lighting and crime - last post by PEterW

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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, revans
  • 26,043 topics
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Dumb question from a guy wh... - last post by deSitter


"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

  • 22,130 topics
  • 370,702 replies
Sky Rover Banner Cloud APO... - last post by Moravianus


Binoviewer discussion forum

Forum moderators: nikm, noisejammer, spazmore
  • 5,994 topics
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"Side pupils" in bi... - 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).

  • 24,600 topics
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Apertura 8" Classical C... - last post by quilty

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
  • 17,861 topics
  • 506,742 replies
What is the old telescope i... - last post by c predom

Equipment (No astrophotography)

A forum for discussion of visual and general astronomy equipment and accessories; a default location if you your topic does not fit into any of the more specialized equipment forums such as Mounts, Eyepieces, Refractors, etc.

Topics related to astronomy cameras and related imaging equipment should be posted in whichever imaging forum is most appropriate to that topic. These can be found in the Astrophotography and Sketching category.

Forum moderators: Jared, Katz, mewmartigan, MJB87, Wildetelescope
  • 41,517 topics
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Astronomy and the Long View - last post by NinePlanets


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

Forum moderators: FirstSight, noisejammer, therealdmt, Uwe Pilz
  • 38,729 topics
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Found an old eyepiece... an... - last post by desert_sage


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: FrostByte, MJB87, polslinux, sbradley07
  • 45,678 topics
  • 537,277 replies
Paint It Black - last post by Sky Muse

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: DeepSky Di, nicknacknock, polslinux
  • 2,355 topics
  • 33,730 replies
Beginner PVS-14 Astronomy Q... - last post by Speedy1985


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: Astrola72, Dan Crowson, MJB87, nikm
  • 7,589 topics
  • 141,401 replies
Cloud Detection for All-Sky... - last post by fly800


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

  • 26,925 topics
  • 458,208 replies
10 inch to 12 inch - last post by deSitter


A forum for discussing refractor telescopes.

  • 36,381 topics
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Are Stellarvue scopes consi... - last post by Kolenka

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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, Moon, and comets. 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. Posts about imaging comets should go in the target-oriented "Comet Observing and Imaging" forum. Aesthetic Deep Sky Object Imaging should generally be discussed in the Beginning or Experienced DSO Imaging Forum

Forum moderators: Sean Cunneen, nikm, Professor2112, RedLionNJ, TimN
  • 52,081 topics
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Mars and Saturn w/Titan tra... - last post by Mike Phillips

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.

  • 81,483 topics
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Recommended Light Pollution... - last post by bobzeq25

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.

  • 63,026 topics
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What's In My Image: My... - last post by setiv2

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: FrostByte, Napp, spazmore, TimN
  • 50,126 topics
  • 417,311 replies
Guidecam for OAG on 650mm f... - last post by vidrazor

Film Astrophotography

Discussions about astrophotography using film.

Forum moderators: mewmartigan, Uwe Pilz
  • 2,682 topics
  • 18,979 replies
8 inch Schmidt Camera part? - last post by roger_ca

Electronically Assisted Astronomy (No Post-Processing)

Electronically Assisted Astronomy (EAA) is the use of a camera in lieu of an eyepiece at the telescope to capture and view images in near real time. For the purposes of this forum, near real time images must have a maximum total integration of no more than 60 minutes and cannot be post-processed. The purpose of the EAA Forum is to give members a place to share their observing experiences, talk about the equipment used, and post images captured with EAA devices.

  • 10,085 topics
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Only the brightest objects... - last post by stevecoh1


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

Forum moderators: frank5817, mdowns, Uwe Pilz
  • 15,133 topics
  • 137,307 replies
Transit of Titan  July 16th... - last post by Special Ed

Smart Telescopes

A forum for the discussion of all-in-one, computer controlled, astrographs. Such instruments include, but are not limited to, those made by Vaonis, Unistellar, DwarfLab & ZWO. This forum is intended for the discussion of instrument-specific hardware and software. The processing of final images, their use for outreach, or general astronomy topics may be more appropriate in other Cloudy Nights forums.

Forum moderators: FrostByte, mdowns, Napp
  • 538 topics
  • 20,604 replies
Celestron Smart Scope The O... - last post by Eric63

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Solar System Observing

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

Forum moderators: GUS.K, gustavo_sanchez, Napp, Starlancer
  • 9,664 topics
  • 100,451 replies
Titan transit 7/15 - 7/16 PDT - last post by Special Ed

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.)

  • 10,509 topics
  • 76,302 replies
Something over the moon - last post by Sincos

Deep Sky Observing

A dark place to discuss deep sky observing and observations

Forum moderators: BrentKnight, cuzimthedad, GUS.K, Katz
  • 10,750 topics
  • 134,679 replies
H-Beta filter for my 20... - last post by Starman1

Double Star Observing

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

Forum moderators: AnakChan, Uwe Pilz, zombie1210
  • 4,565 topics
  • 48,128 replies
What magnifications did you... - last post by N-1

Solar Observing and Imaging

Hot place to discuss solar observing and imaging topics

Forum moderators: GUS.K, gustavo_sanchez, Jared, Napp, nicknacknock
  • 42,588 topics
  • 316,834 replies
Second session with Daystar... - last post by georgian82

Solar Eclipses

A forum for discussion of all things related to the North American total solar eclipses of 2017 and 2024, as well as any other solar eclipses - events, outreach, equipment, etc.
***Note that the 2017 and 2024 forums are locked, but are still available for viewing.***

Forum moderators: DeepSky Di, MJB87, nicknacknock, RedLionNJ
  • 1,871 topics
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DIY 2027 In Spain - last post by FernandoPrz

Comet Observing and Imaging

A place to discuss all things about comets. Both observing and imaging topics are welcome here.

  • 356 topics
  • 1,936 replies
ALPO Comet News for July 2024 - last post by Sky King

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, RedLionNJ, Starlancer
  • 2,285 topics
  • 18,719 replies
T Crb just underwent a sign... - last post by blackhaz

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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, Wildetelescope
  • 19,250 topics
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Celestron Starsense Explore... - last post by Dave Hederich

Questar Forum

A forum for discussing Questar and Quantum telescopes

Forum moderators: nicknacknock, zombie1210
  • 2,670 topics
  • 33,352 replies
Why did you buy a Questar? - last post by Rgross2112

Meade Computerized Telescopes

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

  • 11,826 topics
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AutoFiLX200 – MEADE LX200 W... - last post by Arcane1125

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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, revans
  • 4,293 topics
  • 106,042 replies
Green Bank Star Quest, July... - last post by Special Ed

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: BrentKnight, Katz
  • 5,843 topics
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Sky and Telescope Renewal..... - last post by bob b

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: Napp, WadeH237
  • 12,131 topics
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Extracting pixel data from... - last post by archiebald

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.

  • 7,046 topics
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Is dogmatism part of cosmol... - last post by Olimad

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, MJB87, mdowns, TimN
  • 1,405 topics
  • 12,268 replies
indentify help needed - last post by Meteorseeker

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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: j.gardavsky, Sean Cunneen, sbradley07
  • 1,773 topics
  • 24,177 replies
kenavision microprojector - last post by mikerepp

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Vendor and Group Announcements

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

Forum moderators: CltFlyboy, GUS.K, osbourne one-nil
  • 7,292 topics
  • 55,469 replies
Acuter MAKSYGO-60 Mini Maks... - last post by Mark9473

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