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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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New signature line limits - 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
  • 2,466 topics
  • 28,361 replies
The Astronomer at the Museu... - last post by DSOs4Me

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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April 2020 Celestial Calendar - last post by Dave Mitsky

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Beginners Forum (No astrophotography here - please read the forum description)

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 the Beginning & Intermediate Imaging Forum.

Forum moderators: Jond105, spereira, Starman27
  • 30,183 topics
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Refractor or reflector for... - last post by SteveG

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
  • 11,837 topics
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Rant: busting the myth that... - last post by CrazyPanda


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, Jeff Struve, Starman27
  • 1,031 topics
  • 14,058 replies
Northeastern US (Maine) Dis... - last post by clearwaterdave

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
  • 1,850 topics
  • 22,737 replies
Loving LED’S - last post by SonnyE

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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: GShaffer, Sean Cunneen, Starman81
  • 20,670 topics
  • 336,550 replies
Testing a Cassegrain secondary - last post by gregj888


"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, Jawaid I. Abbasi, Uwe Pilz
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What did you see last night... - last post by bcarter1234


Binoviewer discussion forum

Forum moderators: Jawaid I. Abbasi, junomike, nmoushon
  • 4,991 topics
  • 52,389 replies
Show us your binoviewers! - last post by Spikey131

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, Jaimo!, Starman27
  • 18,623 topics
  • 281,935 replies
First "Real" Telesc... - last post by Sammy

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.

  • 14,582 topics
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Help identifying Edmunds mount - last post by mweir2


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.

Forum moderators: Jeff Struve, rgsalinger, Stelios
  • 29,834 topics
  • 344,261 replies
Help with Apogee Ascent and... - last post by Esso2112


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

Forum moderators: Cotts, FirstSight, Jaimo!, Wisconsin Steve
  • 31,715 topics
  • 567,563 replies
2020 Eyepieces Buyer's... - last post by BFaucett


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.

  • 32,439 topics
  • 372,378 replies
RainbowAstro RST-135 Review... - last post by Blue_Orca


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.

  • 5,833 topics
  • 113,160 replies
Material for ROR Shed Re-Ro... - last post by Chucke


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

Forum moderators: flyingcougar, GShaffer, spereira
  • 21,807 topics
  • 360,764 replies
How good are small Newtonia... - last post by Jon Isaacs


A forum for discussing refractor telescopes.

Forum moderators: FirstSight, junomike, rgsalinger, Uwe Pilz
  • 28,570 topics
  • 615,769 replies
Takahashi FC-76 DCU vs. FC-... - last post by waso29

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Beginning and Intermediate Imaging

This forum is mainly intended for beginners getting started imaging DSOs as well as intermediate imagers looking to improve their technique. Please read the forum rules before you post!

Forum moderators: johnsoda, nmoushon, spereira, Stelios
  • 47,861 topics
  • 486,151 replies
another can you do better w... - last post by SnowWolf

Film Astrophotography

Discussions about astrophotography using film.

Forum moderators: CharlieB, Erik Bakker, Uwe Pilz
  • 2,505 topics
  • 17,417 replies
Ilford Ceases Production - last post by Todd N

DSLR & Digital Camera Astro Imaging & Processing

This forum is for DSLR & Digital Camera Astro imaging. Those folks with regular digital cameras are welcome to post here. Discuss equipment, techniques, software; and of course, post your photos! Please read the forum guidelines inside the forum for more info.

Forum moderators: johnsoda, rgsalinger, Starman27
  • 42,333 topics
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Achromatic refractors/small... - last post by 17.5Dob

CCD/CMOS Astro Camera Imaging & Processing

This forum is for more advanced discussion involving dedicated cameras for deep sky astrophotography, using CCD or CMOS sensors. A place to discuss techniques, software, and engage in friendly conversations.

Forum moderators: Dan Crowson, flyingcougar, johnsoda, Stelios
  • 44,822 topics
  • 379,423 replies
Abell 262, the Fath Cluster - last post by astrovienna

Solar System Imaging & Processing

A forum to post images of the Sun, Moon, Planets and other objects winging through the Solar System. All Camera types are invited to post images and discuss techniques, software and engage in friendly competition. Please read the image posting guidelines before you post!

  • 38,745 topics
  • 267,166 replies
Small bore challenge: Venus... - last post by james7ca


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

Forum moderators: frank5817, Jeff Struve, Uwe Pilz
  • 11,617 topics
  • 111,234 replies
Hyades and the Golden Cockerel - last post by Astroman007

EAA and Night Vision

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.

  • 7,774 topics
  • 114,420 replies
How to use SharpCap with a... - last post by Rickster

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Solar System Observing

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

  • 7,719 topics
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ATLAS comet observation in... - last post by scottmm2012

Lunar Observing

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, Starman81
  • 5,866 topics
  • 47,139 replies
Post Your Cell Phone or Sma... - last post by AJK 547

Deep Sky Observing

A dark place to discuss deep sky observing and observations

Forum moderators: CharlieB, Jond105, orlyandico
  • 8,850 topics
  • 103,756 replies
Your favorite dark site ope... - last post by jayrome

Double Star Observing

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

Forum moderators: CharlieB, Jond105, Uwe Pilz
  • 3,294 topics
  • 35,112 replies
Sextans Doubles - last post by Bigzmey

Solar Observing and Imaging

Hot place to discuss solar observing and imaging topics

Forum moderators: GShaffer, gustavo_sanchez, Jaimo!, junomike
  • 30,289 topics
  • 237,460 replies
Wonderful day, in the end - last post by Gray

Observational Astrophysics

A place to record your methods and observations that relate to stellar dynamics and evolution, including variable and carbon stars. Spectroscopy, photometry and radio astronomy are particularly welcome.

Forum moderators: Cotts, rgsalinger, star drop
  • 1,451 topics
  • 10,449 replies
80 cm >> or > o... - last post by TOMDEY

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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: junomike, MJB87
  • 14,883 topics
  • 180,228 replies
Identify My Tube for me, Pl... - last post by gemini1

Questar Forum

A forum for discussing Questar and Quantum telescopes

Forum moderators: Erik Bakker, johnsoda, Wisconsin Steve
  • 1,901 topics
  • 21,405 replies
Questar Observing Reports (... - last post by rcwolpert

Meade Computerized Telescopes

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

  • 9,571 topics
  • 82,718 replies
LX200 spotting scope specs? - last post by texcoco

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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.

  • 3,546 topics
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2020 Texas Star Party - last post by Unknownastron

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
  • 4,299 topics
  • 45,353 replies
I'll buy that book...to... - last post by brentknight

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.

  • 7,495 topics
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Sky Safari Pro and Sky-Watc... - last post by Ain Soph Aur

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: FirstSight, GShaffer, LivingNDixie
  • 5,298 topics
  • 79,591 replies
A unified theory of catacly... - last post by BQ Octantis

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: Jeff Struve
  • 1,151 topics
  • 10,515 replies
Creating a replica - last post by Ettu

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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: Starman27
  • 1,512 topics
  • 22,466 replies
Fun household microscope items - last post by PXR-5

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S&S Telescopes

OTAs and complete telescope setups. - ** This forum is now read-only **

Forum moderators: Cotts
  • 2,812 topics
  • 11,582 replies
Lunt LS50T Ha solar scope w... - last post by whirlpoolm51

S&S Eyepieces

Eyepieces and barlows only please! - ** This forum is now read-only **

Forum moderators: The Ardent
  • 4,123 topics
  • 11,775 replies
S&S Forums phasing out - last post by WOBentley

S&S Imaging

Got imaging gear to move or buy? This is da place. Cameras (CCD and Film), filter wheels, lenses, etc... - ** This forum is now read-only **

Forum moderators: Starman27, The Ardent
  • 1,298 topics
  • 2,692 replies
FOR SALE-NIKON D40 WITH LENS - last post by The Ardent

S&S Mounts

The place to place mounts and mount accessories (drives, tripods, goto systems, polar scopes, encoders, etc...) - ** This forum is now read-only **

  • 2,229 topics
  • 6,117 replies
Antares? Equatorial Mount H... - last post by scopeboy42

S&S Binoculars

For the sale and trade of binoculars and binocular accessories... - ** This forum is now read-only **

Forum moderators: junomike
  • 442 topics
  • 1,415 replies
Oberwerk Mariner 8x40 - last post by 39.1N84.5W

S&S Misc Astro

Antiques, books and magazines, software, filters, finders, guidescopes, cases, diagonals, meteorites, visual assisted astro gear, binoviewers, computers/PDA's, and anything not covered by one of the other S&S forumsYou must be logged in to view this forum. - ** This forum is now read-only **

Forum moderators: Jeff Struve, Stelios
  • 13,012 topics
  • 43,090 replies
WANTED:  2" H Alpha Filter - last post by FebStars

S&S Forum Rules & Information for New Members

The Swap & Shop forums are intended for Cloudy Nights members to buy, sell and trade personal astronomy related equipment. You will need to be a member for at least 30 days and have at least 30 posts in other forums in order to access these forums. - ** This forum is now read-only **

  • 2 topics
  • 0 replies
S&S Forums phasing out - last post by WOBentley

Toggle CN Feedback and Vendor Announcements CN Feedback and Vendor Announcements

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Vendor and Group Announcements

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

Forum moderators: CharlieB, flyingcougar, rgsalinger
  • 5,568 topics
  • 42,417 replies
nFRAME camera rotator PRICE... - last post by rigelsys

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