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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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A Couple of Awesome Books I... - last post by careysub

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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
  • 36,238 topics
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Are certain eye pieces bett... - last post by Sebastian_Sajaroff

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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An Astronomer's Headlamp - last post by Tony Flanders


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 maroubra_boy

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.

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Why Canadians have less Sky... - last post by Tony Flanders

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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
  • 26,032 topics
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Very fast 12" f0.65 mirror - last post by Chryselephantin


"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

  • 22,117 topics
  • 370,508 replies
What did you see last night... - last post by DyDyMT


Binoviewer discussion forum

Forum moderators: nikm, noisejammer, spazmore
  • 5,994 topics
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BV views vs actual binoculars - last post by Sebastian_Sajaroff

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).

  • 24,598 topics
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Older C8 - Corrector Plate... - last post by davidc135

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
  • 17,857 topics
  • 506,568 replies
Craigslist,eBay and other v... - last post by CHASLX200

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
  • 41,507 topics
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Astronomy and the Long View - last post by Sebastian_Sajaroff


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

Forum moderators: FirstSight, noisejammer, therealdmt, Uwe Pilz
  • 38,711 topics
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Pseudo-Masuyamas? - last post by DrakonisZA


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
  • 45,667 topics
  • 536,992 replies
Are we seeing the extinctio... - last post by lucam

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
  • 2,354 topics
  • 33,717 replies
ISO Recommendations, NV Gai... - last post by ButterFly


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
  • 7,583 topics
  • 141,331 replies
Cloud Detection for All-Sky... - last post by SebaAstro


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

  • 26,914 topics
  • 458,100 replies
24" cdk (big Ben) - last post by TayM57


A forum for discussing refractor telescopes.

  • 36,369 topics
  • 839,065 replies
Why do Takahashi scopes loo... - 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, 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
  • 52,065 topics
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Saturn and Mars, July 14; M... - last post by Alexandrite

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.

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NGC7000 and a bit of a rant... - last post by UP4014Fan

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.

  • 63,006 topics
  • 545,369 replies
Anyone using the Wanderer r... - last post by tsk1979

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
  • 50,121 topics
  • 417,259 replies
D5100, NINA, Plate solve fa... - last post by han.k

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.

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Can you do a mosaic of M31? - last post by GazingOli


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

Forum moderators: frank5817, mdowns, Uwe Pilz
  • 15,131 topics
  • 137,292 replies
NGC 6210 - Tiny Planetary N... - last post by starquake

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
  • 535 topics
  • 20,388 replies
Seestar S50 photos - last post by ThatAussieGuy

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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
  • 9,661 topics
  • 100,411 replies
Mars Observation Book - last post by Dean Norris

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.)

  • 10,492 topics
  • 76,235 replies
Waxing Moon 62.4% July 14,... - last post by groom

Deep Sky Observing

A dark place to discuss deep sky observing and observations

Forum moderators: BrentKnight, cuzimthedad, GUS.K, Katz
  • 10,747 topics
  • 134,641 replies
NGC 6886, A Tiny Planetary - last post by Tony Flanders

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
  • 48,122 replies
Delphinus Del ; questionabl... - last post by CHnuschti

Solar Observing and Imaging

Hot place to discuss solar observing and imaging topics

Forum moderators: GUS.K, gustavo_sanchez, Jared, Napp, nicknacknock
  • 42,555 topics
  • 316,634 replies
Brand new Lunt 40mm - two q... - last post by Highburymark

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
  • 20,536 replies
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.

  • 355 topics
  • 1,933 replies
I tried comet 13P with the... - last post by stanislas-jean

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
  • 18,717 replies
Astrometry and amateur'... - last post by Startoucher 101

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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
  • 19,246 topics
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Starsense Piggyback Adapter? - last post by abe

Questar Forum

A forum for discussing Questar and Quantum telescopes

Forum moderators: nicknacknock, zombie1210
  • 2,669 topics
  • 33,334 replies
Questars on eBay and Craigs... - last post by 98105dude

Meade Computerized Telescopes

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

  • 11,817 topics
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Saw this a few moments ago... - last post by Skywatchr

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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
  • 105,997 replies
Please Plan of Attending th... - last post by Diana N

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
  • 5,840 topics
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Imminent 2nd edition of Ron... - last post by obrazell

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
  • 12,125 topics
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N.I.N.A Flat wizard darks u... - last post by rgsalinger

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.

  • 7,044 topics
  • 104,775 replies
Does multicellular life nee... - last post by Tony Flanders

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
  • 12,264 replies
meteorite from Morocco - last post by mark8888

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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
  • 1,772 topics
  • 24,170 replies
Nikon C22 Plan Objective - last post by Steve Allison

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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
  • 7,290 topics
  • 55,442 replies
Askar New Cost Effective Te... - last post by pnobrega

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