Jump to content


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.

Toggle Announcements, Feedback, and News Announcements, Feedback, and News

  Forum Stats Last Post Info

Cloudy Nights Announcements

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

  • 753 topics
  • 573 replies
On New Year’s Eve… - 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
  • 2,662 topics
  • 32,792 replies
Cosmic Challenge: Alphabet... - last post by Dave Mitsky

Toggle General Astronomy General Astronomy

  Forum Stats Last Post Info

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
  • 35,989 topics
  • 618,154 replies
Looking for tips when obser... - last post by LordZalmoxes

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)

  • 14,490 topics
  • 289,105 replies
Astronomy is such a nice ad... - last post by GrassLakeRon


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
  • 1,381 topics
  • 22,240 replies
Northeastern US (Maine) Dis... - last post by Mike96

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.

  • 2,604 topics
  • 34,108 replies
What CCT Lights are Cities... - last post by earlyriser

Toggle Equipment Discussions Equipment Discussions

  Forum Stats Last Post Info

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
  • 25,751 topics
  • 432,414 replies
Lockwood optics lead time - last post by Dick Jacobson


"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

  • 21,855 topics
  • 363,926 replies
Team 8X - last post by jcj380


Binoviewer discussion forum

Forum moderators: nikm, noisejammer, spazmore
  • 5,947 topics
  • 63,754 replies
Modify Truss Dob for Binovi... - last post by Psalm19One

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).

  • 24,337 topics
  • 375,659 replies
Edge HD 9.25 with built in... - last post by Docretier

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
  • 17,715 topics
  • 500,490 replies
First light Steinheil 110/1... - last post by Astrojensen

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
  • 41,269 topics
  • 466,193 replies
Orion rebranding Kson optics? - last post by Jon Isaacs


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

Forum moderators: FirstSight, noisejammer, therealdmt, Uwe Pilz
  • 38,426 topics
  • 746,617 replies
Pentax XWs, Safety Undercuts? - last post by CrazyPanda


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
  • 45,100 topics
  • 528,935 replies
ZWO AM5 Owners' Club - last post by Ihtegla Sar

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
  • 2,298 topics
  • 33,103 replies
New adapter for converting... - last post by sixela


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
  • 7,477 topics
  • 139,568 replies
Has anyone had an observato... - last post by fieldsweeper


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

  • 26,708 topics
  • 454,172 replies
What did the postman bring... - last post by TheChosen


A forum for discussing refractor telescopes.

  • 36,036 topics
  • 826,946 replies
Astigmatism in objective - last post by Darren Drake

Toggle Astrophotography and Sketching Astrophotography and Sketching

  Forum Stats Last Post Info

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
  • 51,842 topics
  • 362,928 replies
Saturn and Mars - two plane... - last post by Lacaille

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.

  • 80,003 topics
  • 830,087 replies
Slash through bright stars... - last post by bbasiaga

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.

  • 62,256 topics
  • 539,212 replies
Strange spots on ASI 1600MM... - last post by Byku

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
  • 49,948 topics
  • 415,919 replies
ASIAIR Plus and Nikon D780 - last post by flappah

Film Astrophotography

Discussions about astrophotography using film.

Forum moderators: mewmartigan, Uwe Pilz
  • 2,676 topics
  • 18,929 replies
Film still viable? I have a... - last post by archer1960

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.

  • 9,949 topics
  • 164,448 replies
Chromatic Aberration Correc... - last post by alphatripleplus


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

Forum moderators: frank5817, mdowns, Uwe Pilz
  • 15,028 topics
  • 136,669 replies
Overview of the Basics - last post by michaeledward64

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
  • 449 topics
  • 15,481 replies
ZWO Seestar S50 - last post by tarbat

Toggle Observing Observing

  Forum Stats Last Post Info

Solar System Observing

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

Forum moderators: GUS.K, gustavo_sanchez, Napp, Starlancer
  • 9,631 topics
  • 100,062 replies
(439437) 2013 NK4 last nigh... - last post by Tapio

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.)

  • 10,139 topics
  • 73,745 replies
Triesnecker and Hyginus reg... - last post by Physicsman

Deep Sky Observing

A dark place to discuss deep sky observing and observations

Forum moderators: BrentKnight, cuzimthedad, GUS.K, Katz
  • 10,649 topics
  • 133,289 replies
Omega Centauri and Centauru... - last post by Jon Isaacs

Double Star Observing

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

Forum moderators: AnakChan, Uwe Pilz, zombie1210
  • 4,518 topics
  • 47,724 replies
Splitting Theta Aurigae - last post by fred1871

Solar Observing and Imaging

Hot place to discuss solar observing and imaging topics

Forum moderators: GUS.K, gustavo_sanchez, Jared, Napp, nicknacknock
  • 41,528 topics
  • 310,574 replies
SDO/HMI and GONG Images on... - last post by SgrB2

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 forum is locked, but is still available for viewing.***

Forum moderators: DeepSky Di, MJB87, nicknacknock, RedLionNJ
  • 1,794 topics
  • 19,954 replies
Found a (probably) satellit... - last post by topcode

Comet Observing and Imaging

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

  • 292 topics
  • 1,594 replies
Your first comet - last post by rutherfordt

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
  • 2,250 topics
  • 18,385 replies
AAVSO Alert Notice 859: Pho... - last post by pbealo

Toggle Telescope Specific Forums Telescope Specific Forums

  Forum Stats Last Post Info

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
  • 19,077 topics
  • 228,455 replies
Old 8" Ultima 2000 - last post by mlord

Questar Forum

A forum for discussing Questar and Quantum telescopes

Forum moderators: nicknacknock, zombie1210
  • 2,631 topics
  • 32,588 replies
Focusing frustration - last post by steveward53

Meade Computerized Telescopes

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

  • 11,731 topics
  • 101,106 replies
LX200GPS-cant find target - last post by OzAndrewJ

Toggle Speciality Forums Speciality Forums

  Forum Stats Last Post Info

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
  • 4,255 topics
  • 105,109 replies
NEAF 2024 Set For April 20t... - last post by Xeroid

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
  • 5,769 topics
  • 64,591 replies
The Sky This Month - last post by Dave Mitsky

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
  • 11,922 topics
  • 102,752 replies
New All Sky camera manageme... - last post by Broz22

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.

  • 6,940 topics
  • 103,133 replies
Should Pluto and the other... - last post by TOMDEY

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
  • 1,391 topics
  • 12,153 replies
melt breccia meteorite? - last post by leonardovaller

Toggle Other Other

  Forum Stats Last Post Info

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
  • 1,765 topics
  • 24,128 replies
High-flying-plane spotting... - last post by Echolight

Toggle Vendor Announcements Vendor Announcements

  Forum Stats Last Post Info

Vendor and Group Announcements

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

Forum moderators: CltFlyboy, GUS.K, osbourne one-nil
  • 7,206 topics
  • 54,749 replies
New APM Binocular Models :... - last post by APM M.Ludes

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.

Recent Topics

  • 13,142,270 Total Posts
  • 192,097 Total Members
  • Hioctane321 Newest Member
  • 9,134 Most Online

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics