Astro Sites - 3SistersAstronomy

Last updated: April 8th, 2024

Welcome to our astro links page! We’ve put together a comprehensive list of resources related to astronomy and astrophotography that we’ve discovered while exploring the hobby. These are websites, YouTube channels, forums, tutorials, and more that we’ve found to be particularly helpful in our own journey, and we wanted to share them with you. Please note that we are not affiliated with any of these resources; we simply wanted to provide a centralized location for helpful links that we’ve found along the way.

If you come across any broken links or have a resource that you believe would benefit the community, please let us know and we will consider adding it. While we have done our best to ensure that all links are in working order, it’s possible that things may have changed since the time of posting. For ease of navigation, we’ve kept the descriptions below as brief as possible. We hope you find these resources as useful as we have!

Disclaimer: We do not endorse or guarantee the accuracy, safety, security, or virus-free status of any website linked to from this website. By clicking on any of the links provided, you assume all risk and responsibility for any damages or losses that may result. Use at your own risk.

Note: “Not secure” means website URL includes http and not https

..::Click the headers below to expand::..

Our YouTube Playlists

Our YouTube Playlists features a wide range of astrophotography content that is constantly being updated. Discover videos categorized by topics such as planetary imaging, deep space photography, software tutorials, image processing techniques, equipment assistance, and more. Whether you’re a beginner or an experienced astrophotographer, these playlists provide a convenient way to access valuable resources and dive into specific areas of interest within the world of astrophotography.

..::ASTRO EQUIPMENT PLAYLISTS::..

Camera’s

DIY

Eyepieces

Filters

Mounts

OAGs (Off-Axis Guiders)

Home Observatories

Star Trackers

Telescopes

..::ASTRONOMY PLAYLISTS::..

Education

Observing

..::ASTROPHOTOGRAPHY PLAYLISTS::..

Aurora’s (imaging, processing, etc.)

Calibration Frames

Comet’s (imaging, processing, etc.)

Dithering

For Beginners

Guiding

Lunar (imaging, processing, etc.)

Milky Way (imaging, processing, etc.)

Planetary (imaging, processing, etc.)

Polar Alignment

Solar (imaging, processing, etc.)

Star Trails (imaging, processing, etc.)

Understanding Backfocus

..::PHOTOSHOP PLAYLISTS::..

Background Work (removing gradients, light pollution, etc.)

Broadband Processing

Narrowband Processing

Masks

Processing Tricks

Star Work (reduction, removal, color, etc.)

..::PIXINSIGHT PLAYLISTS::..

Introduction to PixInsight (from the PI team)

Background Work (removing gradients, light pollution, etc.)

Beginners

Color Calibration

Channel Combination (RGB, HaRGB, etc.)

Deconvolution

Full Workflows

Masks

Mosaics

Noise Reduction

PixelMath

Pre-Processing (blink, calibration, WBPP, stacking, etc.)

Pre-Processing: Adam Block’s WBPP YT Guide

Scripts & Add-ons

Star Work (removal, reduction, etc.)

Stretching (curves, levels, histogram work, etc.)

Tips & Tricks

..::SOFTWARE PLAYLISTS::..

ASTAP

Astro Pixel Processor (APP)

AutoStakkert

DeepSkyStacker

GIMP

N.I.N.A

PHD2

PIPP

Registax

Sequence Generator Pro

SharpCap

SiriL

StarTools

Stellarium

YouTube Channels

Discover some awesome astrophotography YouTube channels featuring tutorials, equipment reviews, image processing techniques, and captivating imagery of the night sky. These channels offer valuable insights and practical guidance for astrophotographers of all levels. Learn from experts, explore stunning celestial visuals, and enhance your astrophotography skills with these informative and inspiring channels.

..::HIGHLIGHTS::..

Below, we have handpicked a selection of our favorite astrophotography channels, each accompanied by a direct link to their respective channels. As you scroll further down, you will discover our comprehensive A-Z listing of all the astrophotography channels we have come across thus far. If you don’t see a channel you follow on our list, feel free to reach out to us through a message, and we will gladly take a look and consider adding it. Happy exploring!

VisibleDark
We absolutely love Shawn Nielsen’s channel, VisibleDark! Shawn’s expertise in processing and software is exceptional, and his ability to break down complex concepts into easily understandable videos is truly remarkable. Whenever we’re looking to learn new techniques or gain insights into the world of astrophotography processing, we turn to Shawn’s channel.

Cuiv, The Lazy Geek
Cuiv is an astrophotographer based in Tokyo. With extensive knowledge in all aspects of astrophotography, from equipment to astro software and processing, Cuiv shares interesting and easily understandable videos.

AstroBackyard
Trevor Jones is an extremely knowledgeable astrophotographer and the creator behind AstroBackyard. His channel offers a wealth of tutorials, covering everything from image processing to equipment reviews. Whether you’re a beginner or an experienced astrophotographer, Trevor’s expertise and guidance will help you elevate your skills and capture stunning celestial images.

Nebula Photos
Nico Carver is an highly knowledgeable individual who shares his expertise through comprehensive tutorials on all aspects of astrophotography. From equipment setup to advanced processing techniques, Nico’s videos provide valuable insights and guidance for both beginners and seasoned astrophotographers. Our family has been avid followers of Nico’s videos since the beginning of our own astrophotography journey, and we highly recommend his channel for anyone looking to expand their knowledge and skills in capturing the wonders of the night sky.

Paulyman Astro
Astrophotographer Paul Hancock explores the ins and outs of PixInsight and other aspects of the astrophotography hobby on his channel. Paul’s tutorials are incredibly helpful and have provided us with valuable insights and techniques to enhance our own image processing workflow.

PixInsight
PixInsight’s official YouTube channel that provides tutorials for all things PI related.

Patriot Astro
Chad Sullivan is an astrophotographer with an incredible YouTube channel that we highly recommend checking out. With his vast knowledge and experience, Chad covers a wide range of topics in the world of astrophotography. From exploring different astro software to showcasing various equipment options and even sharing some fascinating DIY projects.

lukomatico
Luke Newbould is an exceptional astrophotographer who shares his expertise through his YouTube channel. With a focus on equipment reviews and tutorials, Luke provides valuable insights and guidance on all aspects of astrophotography. Whether you’re looking for recommendations on cameras, telescopes, or accessories, or seeking step-by-step tutorials on image processing techniques, Luke’s channel is a go-to resource.

Dylan O’Donnell
Dylan O’Donnell is an accomplished astrophotographer based at the Byron Bay Observatory in Australia. Known for his unique blend of expertise and humor, Dylan’s YouTube channel offers a delightful and informative experience for astrophotography enthusiasts. His tutorials cover a wide range of topics, providing valuable insights on equipment, techniques, and image processing.

Photog Adventures
Aaron King, the creative force behind Photog Adventures, is an accomplished landscape and astrophotographer. Through his captivating tutorials, he shares valuable insights and techniques for widefield astrophotography. With awe-inspiring photos and a passion for the craft, Aaron’s work speaks volumes about his expertise and dedication.

AstroJourneyUK
Marc Thomas, the talented astrophotographer behind AstroJourneyUK, offers a wealth of tutorials encompassing processing techniques, imaging methods, and the essential equipment needed to capture breathtaking images of the night sky. His channel serves as a valuable resource for both beginners and experienced astrophotographers, providing insightful guidance and sharing his passion for exploring the cosmos through photography.

Adam Block
Adam Block is an exceptionally knowledgeable astrophotographer renowned for his emphasis on PixInsight tutorials. His videos delve into the intricacies of astrophotography processing, offering unparalleled depth and expertise on the subject. Adam’s dedication to providing education shines through in his content, making his channel an invaluable resource for those seeking to learn astrophotography and explore the art of processing at the deepest level.

Wido’s AstroForum
Wido Oerlemans, an esteemed astrophotographer hailing from The Netherlands, offers a wealth of tutorials encompassing various aspects of astrophotography. From equipment recommendations to software usage and processing techniques, his channel serves as an extensive resource for enthusiasts of the hobby. With a strong focus on sharing knowledge and insights, Wido’s tutorials provide valuable guidance for both beginners and experienced astrophotographers alike.

Alyn Wallace
Alyn Wallace, a talented astrophotographer hailing from Wales, takes us on captivating journeys through his landscape astrophotography tutorials. With his adventurous spirit and keen eye for capturing the beauty of the night sky, Alyn travels the world, showcasing breathtaking photography that inspires and captivates. Whether he’s chasing auroras or framing the Milky Way against stunning landscapes, his tutorials offer valuable insights and techniques to elevate your own landscape astrophotography.

Astrophotography

Discover a collection of valuable astrophotography websites that offer a wealth of resources, tutorials, galleries, and communities dedicated to the art and science of astrophotography. These websites serve as support for enthusiasts and professionals alike, providing insights, tips, and inspiration for capturing stunning images of the cosmos. Whether you’re seeking equipment reviews, processing techniques, or sharing your own work, these carefully selected websites are sure to enhance your astrophotography journey. *Note: The subcategories below cover topics that do not already have a dedicated page here on 3SistersAstronomy. If you are looking for PixInsight Tutorials, Widefield Astrophotography, etc. and they are not listed below, it’s because we already have a page dedicated to that topic.

General Astrophotography Resources

AstroBackyard (Trevor Jones)
Astrophotography tutorials and resources

NightSkyPix.com
Astrophotography tutorials and resources

AstroBin
Astrophotography social and image hosting platform, target and equipment search, showcase image acquisition data, plate solving and image annotation, forums, and much more

VisibleDark (Shawn Nielsen)
Astrophotography tutorials and resources

Wido’s Astroforum
Astrophotography tutorials and resources

Adam Block Studios
Astrophotography tutorials and resources

Galactic Hunter
Astrophotography tutorials and resources

BBC Sky at Night Magazine
Astrophotography tutorials and resource

astrobiscuit
Astrophotography tutorials and resources

Astro Journey UK
Astrophotography tutorials and resources

AstroImagery
Astrophotography tutorials and resources

APOD
NASA Astronomy Picture of the Day

AAPOD2
Amateur Astronomy Photo of the Day

The Mac Observatory
Astrophotography tutorials and resources (from a Mac user)

AstroPix
Astrophotography tutorials and resources

Skies & Scopes
Astrophotography tutorials, gear reviews, and resources

Astronomy.com
Astrophotography tutorials and resources

Starizona
Astrophotography tutorials and resources

RemoteAstrophotography
Author and astronomer Erik Westermann teaches how to use services like iTelescope.net, Telescope.Live, and Slooh.com and process data sets

PhotographingSpace
Astrophotography tutorials and resources

Astrophotographers

Check out our collection of websites managed by seasoned astrophotographers. This list offers insights, experiences, and expert perspectives from individuals deeply engaged in the art and science of capturing the cosmos through photography.

AstroBackyard
Astrophotographer Trevor Jones

Patriot Astro
Astrophotographer Chad Sullivan

VisibleDark
Astrophotographer Shawn Nielsen

Wido’s Astroforum
Astrophotographer Wido Oerlemans

Astro Journey UK
Astrophotographer Marc Thomas

Nebula Photos
Astrophotographer Nico Carver

Adam Block Studios
Astrophotographer Adam Block

Astro Escape
Astrophotographer Daylon Burt

The Mac Observatory
Astrophotographer Andrew Burwell

AstroShed
Astrophotographer Stewart William

Galactic Hunter
Astrophotographers Antoine and Dalia Grelin

AstroImagery
Astrophotographer Karl Perera

AstroPix
Astrophotographer Jerry Lodriguss

The London Astronomer
Astrophotographer Roger Hutchinson

Tiny Patch of Sky
Astrophotographer Kelly Wood

Astro Virus
Astrophotographer Victor Van Puyenbroeck

AstroWorldCreations
Astrophotographer Willem Jan Drijfhout

The Art of Night
Astrophotographer Mark Gee

Matt Dieterich Photography
Astrophotographer Matt Dieterich

Views of the Cosmos
Astrophotographer Damian Peach

BadAstroPhotos (not secure)
Astrophotographer Rob Pettengill

AmazingSKY
Astrophotographer Alan Dyer

Buy Used Equipment

You’ll find a wide range of pre-owned gear at affordable prices below. As a family that has personally acquired most of our equipment used, we understand the value and quality available in the second-hand market. Discover telescopes, cameras, mounts, and accessories from fellow astronomers.

Cloudy Nights
Cloudy Nights has a classified section with a ton of used items, but you must be a member (membership is free)

Nikon (Refurbished)
Nikon refurbished cameras, lenses, binoculars, and more

Astromart
Astromart has a classified section, but you must be a member (there is a fee for new accounts – costs $16 (as of September 2023))

Astronomy Buy & Sell (Canada)
Trading post for new and used telescopes and accessories

Astronomy Buy & Sell (UK)
Trading post for new and used telescopes and accessories

Astronomy Buy & Sell (Australia)
Trading post for new and used telescopes and accessories

IceInSpace
Australian classified section within IceInSpace website

MPB
Buy, sell, and trade photography equipment

Astrosurf (not secure)
French classifieds for selling and buying used astro gear

Canon
Canon refurbished cameras

Astronomy Marketplace (Facebook)
Buy and sell used equipment

Forums

Connect with fellow enthusiasts, share experiences, and seek guidance on capturing stunning celestial images. Engage in conversations and stay updated with the latest trends in astrophotography with our links to various forums below.

Cloudy Nights
Our go-to forum for all things astrophotography and astronomy

The Sky Searchers
Astronomy and astrophotography forum

Stargazers Lounge
Astronomy and astrophotography forum

PixInsight
PixInsight’s official forum for their astrophotography processing software

Astrobin
Astrobin has their own forum section. Within it you will find topics on acquisition, processing techniques, planetary, and more.

Astrosurf (not secure)
French astronomy and astrophotography forum

British Astronomical Association
UK astronomy and astrophotography forum

IceInSpace
Australian astronomy and astrophotography forum

SingAstro
Singapore astronomy and astrophotography forum

East Midlands Stargazers
UK astronomy and astrophotography forum

AstronomyConnect
Astronomy and astrophotography forum

The Backyard Astronomy Space
Astronomy and astrophotography forum

Glossaries/Pronunciations

Browse through our list of glossaries below that provide explanations of key terms and concepts in astrophotography. Whether you’re a beginner or an experienced astrophotographer, these links will help you understand the technical jargon and equipment terminology used in this hobby.

AstroPix
Astrophotography glossary

Starizona
Astrophotography terms and definitions

Celestron
Glossary of astronomy and equipment terms

Night Sky Pix
Astrophotography terms and acronyms

Astronomics
Astrophotography terms and definitions

Planning Tools

Discover a range of tools designed to assist in planning astrophotography sessions. This section includes resources offering interactive sky charts, virtual planetariums, and detailed data on celestial events, planetary positions, and Saturn’s ring angles to enhance your imaging endeavors.”

Telescopius
Find out what is in the sky from your location. Set up an observing list, use the helpful telescope simulator tool, and the various calculators Telescopius.com offers.

TimeandDate.com
Find which planets are visible from your location

The Sky Live
See what’s visible in the night sky from your location. Site also features a moon calendar, online planetarium, 3D Solar System viewer, and much more.

DarkSky.org
Find a dark site to image from with this worldwide database

12 Dimensional String
Moon phase/position, planetary orbit info, angle of Saturn’s rings, and more

Astronomy Tools
Collection of astronomy tools to assist your imaging sessions such as star charts, cloud forecasts, FOV calculators, and more

Heavens-Above
Various sky charts and information from your location to help plan a night under the stars

Worldwide Telescope
Web-based planetarium that can be used to see what’s in the night sky from your location

Practice Data Sets

Explore datasets specifically curated for practicing image processing skills in astrophotography. These sets are perfect for honing your processing techniques and experimenting with different software. Remember to check the website for any requirements regarding giving credit if using the data for your final images.

Mikulski Archive Space Telescopes (MAST)
Archive of astronomical data from dozens of missions like Hubble, Webb, Kepler, and more

AstroBackyard
Trevor Jones provides free data sets on his website for practicing processing

AstroPix
Astrophotographer Jerry Lodriguss provides free practice files on his site

Galactic-Hunter
Astrophotographers Antoine and Dalia provide datasets for purchase

Deep Sky West
Free calibrated master files from the Deep Sky West Remote Observatory

Light Vortex Astronomy
Free data sets provided by Kayron Mercieca

StarBase
Image sets for purchasing

NOIRLab
Practice datasets in FITS format

Telescope Live
Telescope Live offers data for processing

iTelescope
Raw data sets for processing

Remote Telescopes

Rent time on powerful telescopes worldwide to explore the cosmos from your computer. Capture stunning images of galaxies, nebulae, and more. Perfect for astronomers and astrophotographers seeking unique observing opportunities.

Telescope Live
Rent imaging time on various telescopes, buy data for processing, or get full color astrophotography pictures

iTelescope
Rent imaging times on various telescopes or buy data for processing

RoboScopes
Rent imaging time on various telescopes

RemoteAstrophotography
Blog about how to use remote telescope services to do astrophotography

Insight Observatory
Rent imaging time on various telescopes or buy data for processing

SkyGems
Rent imaging time on various telescopes

Remote Astrophotography with Martin Pugh
Rent imaging time on various telescopes

Slooh
Rent imaging time on various telescopes

Utah Desert Remote Observatories
Rent imaging time or rent space for your own equipment

DeepSkyChile
Hosting service where you can store your own equipment for remote operation and observation in Chile’s prime sky conditions.

Social Media Groups

Connect with fellow enthusiasts through vibrant communities on platforms like Facebook, Reddit, and Discord. Discover engaging groups and channels dedicated to astrophotography, where you can share your work, seek advice, and engage in discussions about the cosmos.

..::FACEBOOK GROUPS::..

Stars, Star Trails, and Time-Lapse

Learning Astrophotography

R.O.R Roll Off Roof Observatory Users

Home Observatories/DIY Astronomy Projects

PixInsight for Beginners

Dobsonian Astrophotography

Mastering PixInsight

Milky Way Chasers Group

N.I.N.A User to Use Support

Sky at Night Photography

Astrophotography Together

Astronomy Marketplace – Buy and Sell

Landscape Astrophotography

Budget Astrophotography

DSLR Astronomy Imaging Group

Deep Sky Astrophotography

Solar Photography

Astrophotography

Astronomy & Astrophotography

Nightscaper

The Astro Imaging Channel Group

Night & Astrophotography

Backyard Astronomy

..::REDDIT COMMUNITIES::..

r/AskAstrophotography

r/telescopes

r/astrophotography

r/LandscapeAstro

r/Astronomy

r/space

r/OpenAstroTech (DIY)

r/LongExposurePics

r/milkyway

..::DISCORD CHANNELS::..

For invites to the channels below, please shoot us a message on Discord (3SistersAstronomy)

astrobiscuit Discord

Astro Advice

Astro Nerds

N.I.N.A – Nighttime Imaging ‘N’ Astronomy

Learning Astrophotography

Space Nerds

BOS Planet

Observational Astronomy

Clear Skies Network

Astronomy

Explore the wonders of astronomy—from the Moon to celestial bodies beyond our solar system. Our section offers a collection of websites focusing on diverse astronomical topics. Delve into subsections dedicated to planets, the Sun, space exploration, the International Space Station (ISS), satellites, comets, asteroids, and more.

General Astronomy Resources

Sky & Telescope
Astronomy magazine, news, and education

SpaceNews
Astronomy magazine, news, and education

TimeandDate.com/Astronomy Central
Astronomy news and education

TimeandDate.com/Astronomy Calendar
Astronomy upcoming events

Space.com
Astronomy news and education

Astronomy.com
Astronomy magazine, news, and education

NASA
NASA official site

Astronomy Cast
Astronomy podcast

Astronomy 101
Western Washington University provides educational resources and materials for learning astronomy

James Webb Space Telescope
Official NASA Webb Telescope website

Hubble Space Telescope
Official NASA Hubble website

Australian Broadcast Corporation/Astronomy Section
Astronomy news

Universe Today
Astronomy news, podcast, education, and newsletter

EarthSky
Astronomy news and education

NASA Science at Home
Formal lesson plans, activities, and resources (grades K-12)

NASA Science
Astronomy news and education

Skies & Scopes/Astronomy Guides
Various guides, tools, and articles on astronomy and stargazing

The Planetary Society
Astronomy news and education

JPL
NASA – Jet Propulsion Laboratory

The American Association of Variable Star Observers (AAVSO)
AAVSO is an international non-profit org dedicated to engaging amateur and professional astronomers in observing and understanding variable stars. They collect and analyze data, provide resources, and promote collaboration to deepen our knowledge of these celestial objects.

NASA Blogs
Home for all NASA blog sites

NASA “Watch the Skies” Blog
Astronomy blog site

Society for Popular Astronomy (SPA)
Astronomy magazine, news, and education

BBC Sky at Night Magazine
Astronomy magazine, news, and education

Go Astronomy
Astronomy educational resource

Cool Cosmos – Ask an Astronomer
Astronomy questions and answers

SETI Institute
Research organization exploring the search for extraterrestrial intelligence/offers educational resources

Space Daily
Astronomy news and education

Astronomy Technology Today
Global magazine focusing on telescopes and related equipment

Smithsonian Air and Space Museum
Smithsonian Air and Space Museum official site with astronomy resources

MPC (The Minor Planet Center)
Coordinates global observations and orbits for minor planets, comets, and irregular satellites, fostering astronomical research under the International Astronomical Union (IAU).

Phys.org – Astronomy
Astronomy news and education

USRA
Universities Space Research Association official website/provides research, educational resources, and insights into space exploration

The Lunar and Planetary Institute (LPI)
Hub for planetary science research and education

The Royal Astronomical Society (RAS)
Astronomy news and educational resources

12 Dimensional String
Messier catalogue

StarDate
Astronomy radio program, magazine, and public education and outreach program of the McDonald Observatory (University of Texas)

Indigenous Astronomy
A nice resource for various aspects of Archeo-astronomy on NgāWhetū.nz

ScienceDaily
Astronomy news and education

Astronomy Now
Astronomy magazine, news, and education

DataSciencePrograms.com
The article delves into how data science transforms space exploration by enhancing celestial data analysis, spacecraft navigation, telescope technology, and fostering international collaboration in unraveling cosmic mysteries.

AstroPix
Browse/search thousands on images from telescopes around the world and in space

International Occultation Timing Association (IOTA)
Facilitates global collaboration in observing and timing celestial occultations, contributing valuable data to advance astronomical research and understanding celestial objects

SpaceQ
Canadian based website covering global space news

Little Astronomy
Astronomy news and education

Windowpane Observatory
Home of the Windowpane Observatory but this site has fun and interesting information on astronomy

CoolCosmos
“Ask an Astronomer” section features Q&A on various astronomy topics

Asteroids

NASA – Solar System Exploration: Asteroids
Educational resource on asteroids

Asteroid Day
Educational resource on asteroids

TimeandDate.com
Educational resource on asteroids

The Nine Planets – Asteroid Facts
Educational resource on asteroids

Beyond Our Solar System (Nebulae, Galaxies, etc.)

Coming soon!

Comets

Comet Observation Database (COBS)
Database for amateur and professional astronomers to submit their observations on comets. COBS also features news, stats, tools, references, and much more

Heavens-Above
Listing of current observable comets, their brightness, and location

NASA – Solar System Exploration: Comets
Education on comets

British Astronomical Association
News, images, videos, databases, and more related to comets

Comet Chasing
Listing of comets that are visible through telescopes

MPC (The Minor Planet Center)
Coordinates global observations and orbits for minor planets, comets, and irregular satellites, fostering astronomical research under the International Astronomical Union (IAU).

Forums

Below you will find a hub of vibrant online communities discussing all things astronomy-related. Discover a multitude of forums where enthusiasts and experts share knowledge, ask questions, and engage in lively astronomical discussions.

DeepSkyForum
Forum for visual observing

Space.com
Astronomy forum

Cloudy Nights
Our go-to forum for all things astrophotography and astronomy

Physics Forums (Cosmology)
Cosmology forum

Physics Forums (Astrophysics/Astronomy)
Astronomy and astrophysics forum within the PhysicsForums site

Starship Asterisk
Astronomy forum

The Sky Searchers
Astronomy and astrophotography forum

Stargazers Lounge
Astronomy and astrophotography forum

Wolfram Community
Astronomy forum

Astrosurf (not secure)
French astronomy and astrophotography forum

British Astronomical Association
UK astronomy and astrophotography forum

IceInSpace
Australian astronomy and astrophotography forum

SingAstro
Singapore astronomy and astrophotography forum

East Midlands Stargazers
UK astronomy and astrophotography forum

AstronomyConnect
Astronomy and astrophotography forum

collectSPACE (not secure)
Astronomy forum for collecting space memorabilia and history

The Backyard Astronomy Space
Astronomy and astrophotography forum

IOTA Forum
Forum for observing and timing celestial occultations

Glossaries/Pronunciations

Explore a wealth of comprehensive glossaries, pronunciation guides, and terminology references crafted to enhance your grasp of astronomical concepts, terms, and jargon.

Starry Night (terms)
Astronomy terms and definitions

Starry Night (pronunciations)
Pronunciation for various astronomical objects (also features audio options)

Go Astronomy
Astronomy glossary

Space Weather Prediction Center
Space weather glossary

Teach Astronomy
Astronomy glossary

NASA Goddard Space Flight Center
Astronomy terms and definitions

StarDate
Astronomy glossary

HubbleSite
Astronomy Glossary

Ice in Space
Astronomy terms and acronyms

IAU Office of Astronomy for Education
Astronomy glossary

TimeandDate
Astronomy terms and definitions

LEVEL5
Glossary of astronomy including particle physics and some statistics

Wikipedia
Astronomy glossary

Telescope Guides
Astronomy glossary

David Darling
Encyclopedia of Science featuring some astronomy topics. David also has a Children’s Encyclopedia of Science

ISS & Satellites

NASA ISS On-Orbit Status Report
NASA blog for International Space Station (ISS) daily summary reports

Heavens Above
Tools and information for observing celestial objects, providing details on satellite passes, comets, and other astronomical events visible from specific locations on Earth

ISS Transit Finder
Tool for finding the next ISS transit from your location

Jonathan’s Space Report
Resource providing detailed, up-to-date information on space launches, satellite deployments, and space missions (both piloted and automated satellites)

Who Is In Space?
Information on current missions and the men and women currently aboard the ISS

NOAA Satellites
News and information on National Oceanic and Atmospheric Administration’s current and future satellites

ISS National Laboratory
Information and resources about scientific research conducted on the ISS, showcasing experiments, partnerships, and opportunities for innovative space-based investigations

EOS Data Analytics
A nice article on the different types of satellites

International Space Station
NASA’s official website for the ISS

Meteors, Meteorites, Meteoroids, & Meteor Showers

TimeandDate.com
Meteor shower calendar

American Meteor Society
Report fireballs here! Look through the AMS database, review data, videos, and images of fireballs

UK Meteor Network
Network of detection cameras recording fireballs and meteors over the UK. Report fireballs or look through their archive.

NASA – Solar System Exploration: Meteors & Meteorites
Education on meteorites

NASA’s All Sky Fireball Network
Network of cameras for meteor observations

AMS Meteor Shower Calendar
Meteor shower calendar

International Meteor Organization (IMO)
IMO coordinates global meteor observations through their community, provides meteor related calendars, software, and educational resources

SPA Meteor Section
Society for Popular Astronomy meteor news, education, and reporting

StarDate
Meteor shower calendar

MeteorNews.net
Website for amateur meteor observers and worldwide meteor news

Encyclopedia of Meteorites
Encyclopedia of meteorites hosted by the International Meteorite Collectors Association

The Meteoritical Society
International organization dedicated to research and education on meteorites

The Moon

TimeandDate.com
Huge resource with lunar calendars, phases, eclipse information, a distance calculator, listing of full moon names, and much more

Photographic Atlas of the Moon
The Lunar Orbiter Atlas on the LPI (Lunar and Planetary Institute) website

NASA
NASA’s official science website featuring information on the Moon

Britannica
Encyclopedia article on the Moon

The Moon.ie
Described as “a site dedicated to all things lunar”. This site features a blog, photography section, school activities, and information on lunar missions.

MoonPhases.org
View monthly or daily moon phase information. Additionally, check out their blue & full moon calendars.

Space.com
A nice write-up on the Moon to include its formation, composition, atmosphere, orbit, and more

Heavens-Above
Moon information from your location (position, appearance, set/rise info, phases, and more)

Oxford “Depictions of the Moon in Western Visual Culture”
An article exploring the portrayal of the Moon in Western visual culture, examining its historical significance and representations in art, literature, and visual media within a planetary science context.

International Occultation Timing Association (IOTA)
Facilitates global collaboration in observing and timing celestial occultations, contributing valuable data to advance astronomical research and understanding celestial objects

The Planets

TimeandDate.com
Find which planets are visible from your location

The Planetary Society
Educational resource

If the Moon Were Only 1 Pixel
Accurate scale of our solar system

NASA
Educational resource

The Nine Planets
Educational resource for adults and kids

Lunar and Planetary Institute (LPI)
Educational resource

ThePlanets.org
Educational resource

Social Media Groups

Discover thriving communities and engaging forums dedicated to astronomy across platforms like Facebook, Reddit, and Discord. Connect with enthusiasts, share insights, and stay updated on the latest cosmic discoveries in these active online spaces.

..::FACEBOOK GROUPS::..

Telescope Addicts

The Facebook Astronomy Club

R.O.R Roll Off Roof Observatory Users

Home Observatories/DIY Astronomy Projects

Astronomy

Astronomy & Science

ASTRONOMY

Space and Astronomy

Astronomy Talk

Fascinating Astronomy

Astronomy and Astrophysics

Astronomy and Geography Lovers (AGL)

Visual Astronomy “Everything Eyepieces”

Astronomy Lovers

..::REDDIT COMMUNITIES::..

r/nasa

r/space

r/Astronomy

r/askastronomy

r/spaceflight

r/jameswebb

r/SpaceX

r/SpaceXLounge

r/SpaceVideos

r/ISRO

r/ESA

r/AstronomyMemes

r/BlueOrigin

r/ISS

..::DISCORD CHANNELS::..

For invites to the channels below, please shoot us a message on Discord (3SistersAstronomy)

Astro Advice

Astro Nerds

Space Nerds

BOS Planet

Deep Astronomy

Clear Skies Network

Spacecord

Space Odyssey

Observational Astronomy

Space Agencies

National Aeronautics and Space Administration (NASA)

Canadian Space Agency

European Space Agency (ESA)

UK Space Agency

Indian Space Research Organization

Austrailian Space Agency

National Centre for Space Studies (France)

Japan Aerospace Exploration Agency
Japan Site—–English Site

New Zealand Space Agency

Swedish National Space Agency

Space Flight

FutureSpaceFlight
News and education on spaceflight

Spaceflight Now
News and education on spaceflight

Next Spaceflight
Track the latest spaceflight launches

NSF
News and education on spaceflight

NASA – Solar System Exploration: Basics of Space Flight
Online textbook from NASA on the “Basics of Space Flight”

SpaceNews
Latest news on spaceflight

The Orbital Mechanics
Spaceflight engineering podcast

SpaceFlight Insider
Latest news on spaceflight

Astronomy.com
Three sections within Astronomy.com covering human spaceflight, space exploration, and robotic spaceflight

AmericaSpace
Latest news on American spaceflight

The Sun

NASA Heliophysics
Offers comprehensive resources and updates on space weather, solar research, and the Sun’s influence on our solar system, supporting scientific exploration and understanding of heliophysics

SOHO
The Solar & Heliospheric Observatory (SOHO) provides real-time data and images of the Sun and solar phenomena

SDO
The Solar Dynamics Observatory (SDO) is a NASA mission that observes the Sun, capturing high-resolution images and data to study solar activity, helping scientists understand the Sun’s impact on space weather.

SolarMonitor
Provides real-time data and visualizations of solar activity, offering comprehensive information about the Sun’s surface, flares, and space weather events

LWS
Living With a Star Program provides information and research updates on understanding the Sun’s influence on space weather and its impact on Earth and society.

AAS Solar Physics Division
The American Astronomical Society’s Solar Physics Division focuses on advancing research in solar physics, sharing discoveries, and fostering collaboration among scientists studying the Sun and solar phenomena.

Calculators

Discover a versatile suite of calculators tailored for both astrophotography and astronomy. From field of view (FOV) calculators ensuring precise framing in astrophotography to tools like exit pupil calculators, resolving power calculators, and magnification calculators for optimal observations, this collection provides valuable insights. Whether capturing the perfect shot or enhancing your observational skills, these calculators streamline your planning process.

Telescopius
Various calculators for astrophotography (be sure to use the drop down menu to see all options)

Astronomy Tools
Various calculators for astrophotography

Skies and Scopes
500 rule, NPF rule, and focal ratio formula calculators

Astro Escape
Exposure time calculator

12 Dimensional String
FOV calculator along with other planning tools

Deep Sky Detail
SNR (signal to noise) calculator

AstroImagery
Calculator for better long exposures

Sky & Telescope
Calculator providing focal length, magnification, FOV, exit pupil, resolving power, and limiting magnitude of your telescope

DIY (Projects/Build It Yourself)

In this section you will find a list of resources offering guidance and tutorials for astronomy and astrophotography projects. It covers an array of DIY ventures including 3D printing projects, lesson plans, telescope construction, observatories, mounts, trackers, and more, facilitating hands-on exploration and builds for enthusiasts.

OpenAstroTech
Open-source astronomy equipment/3D printable projects including mounts, trackers, guiders, and more

JimCosmos
Various projects such as building your own dobsonian telescope, observatories, piers, and more

CloudyNights DIY Thread 1
A forum thread that is still active since the first post in 2010. The thread title is “Non-astronomy” Equipment Adapted for Astronomy?”

10 Minute Astronomy
Various DIY astronomy projects

Home Built Astronomy Projects
Telescope building and other DIY astronomy projects

CloudyNights DIY Thread 2
Forum thread that is still active covering 3D printed astronomy projects

NASA Science at Home
Formal lesson plans, activities, and resources (grades K-12)

Tom’s Homemade Telescope Page
Various DIY astronomy projects

BBC Sky at Night Magazine
Huge listing of astro DIY projects

Blackwater Skies
Various DIY astronomy projects

PatriotAstro
Build your own All Sky Camera

Sky & Telescope
Listing of astronomy DIY projects

Telescope Guides
Several DIY projects listed in the “Guides” section of this website

Perfect Astronomy
Various DIY astronomy projects

ATM Workshop (not secure)
Amateur Telescope Makers (ATM) is a DIY website covering all aspects of making your own telescope. The site has not been update since 2018, but there is still good information listed.

Light Pollution

Below you’ll discover an assortment of websites dedicated to enlightening individuals and raising awareness about the detrimental effects of light pollution. These resources offer education, advocacy, and valuable tools to combat light pollution and preserve our natural night skies.

Globe at Night
International science campaign to raise awareness about light pollution. Data collected by citizens around the world and you can contribute!

DarkSky
Dark sky movement with chapters, volunteers, advocates, and delegates around the world

Go Astronomy – Dark Sky Sites
Global dark sky directory, light pollution maps, and listing of dark sky sanctuaries/reserves/parks

Skies & Scopes
Article about of dealing with light pollution in astrophotography

Light Pollution Map
World light pollution map

The Commission for Dark Skies
Light pollution resources and education

National Geographic
Light pollution map

United Nations
Article “The Growing Effects of Light Pollution on Migratory Birds”

Go Stargazing
Light pollution resources and education

CPRE (The Countryside Charite)
Article “What is Light Pollution, and How Can You Take Action About it?” and resources

CPRE – Dark Skies
Dark skies map and other resources

Australasian Dark Sky Alliance
Non-profit charity proving education and resource on light pollution

UK Dark Skies Partnership
Light pollution resources and education

Restoring Darkness
Podcast on light pollution

Dark Sky Map
World light pollution map

Dark Sky Friends
Light pollution resources and education

Instituto de Astrofísica de Canarias
Light pollution resources and education

Light Pollution News
Podcast on light pollution

Methow Dark Sky
Light pollution resources and education

Hidden Skies Foundation
Non-profit org working to combat light pollution

DarkSky Switzerland
Independent member of the IDA providing education and resources of light pollution

APPG For Dark Skies
The All-Party Parliamentary Group for dark skies

Outreach Resources

Discover resources for hosting astronomy outreach events below. Explore guides, lesson plans, activities, and educational materials to engage and inspire your audience. Whether you’re organizing a star party, astronomy workshop, or school event, these resources will enhance your outreach efforts and foster a deeper understanding and appreciation of the wonders of the universe.

The Astronomical League
Free downloadable outreach materials

Night Sky Network
Outreach activities and materials

AstroBoost
Outreach resources and training

Astronomical Society of the Pacific
Outreach activities and materials

DarkSky
Outreach materials and resources for spreading light pollution awareness

Visual Astronomy

This section is a treasure trove for observation enthusiasts, offering guidance, education, and tips on observing celestial objects. It also includes websites that delve into the essential equipment for stargazing endeavors.

Astronomy.com
Observing education and resources

Sky & Telescope
Observing education and resources

Love the Night Sky
Observing education and resources

Go Astronomy
Observing education and resources

12 Dimensional String
Moon phase/position, planetary orbit info, angle of Saturn’s rings, and more planning tools

Binocular Sky
A website by Steve Tonkin that’s dedicated to binocular astronomy

BBC Sky at Night Magazine – Article
An article explaining what to realistically expect when looking through an eyepiece

Cloudy Nights Forum
General observing and astronomy section

Astronomy Notes – Article
A good write-up on telescopes that everyone should read

Astronomy Technology Today
Global magazine focusing on telescopes and related equipment

Association of Lunar & Planetary Observes (ALPO)
ALPO unites astronomers worldwide to study the Sun, Moon, planets, and more. Members contribute observations, participate in observing programs, and attend conferences, advancing our understanding of celestial bodies.

Celestron – Article
A short article on which eyepiece to use with your telescope and its magnification limits

Telescope Guides
Observing education and resources

Telescope Boss
Corey Dallmeyer’s website for those interested in visual observing and observing with night vision

International Occultation Timing Association (IOTA)
Facilitates global collaboration in observing and timing celestial occultations, contributing valuable data to advance astronomical research and understanding celestial objects

The American Association of Variable Star Observers (AAVSO)
International non-profit organization for amateur astronomers, providing tools and resources for variable star observations, contributing to scientific research and understanding stellar phenomena

Weather

Explore a compilation of websites tailored to assist in planning your stargazing or astrophotography sessions. These resources offer detailed weather forecasts and conditions relevant to astronomical observation, ensuring optimal experiences under the night sky.

Clear Sky Chart
Local sky charts for US, Canada, Mexico, & Bahamas detailing cloud cover, transparency, seeing, darkness, ECMWF cloud, smoke, humidity, wind, temperature, and more

NOAA
National Oceanic and Atmospheric Administration Space Weather Predication Center

Clear Outside
Weather forecasts designed for astronomers

Meteoblue
Weather forecast with interactive map that can be filtered by satellite, clouds/precipitation, temperature, wind, humidity, and more

Astrospheric
Weather forecasts detailing cloud cover, wind, seeing, dew point, temperature, and more

Good to Stargaze
Weather forecast detailing cloud cover, wind, seeing, visibility, transparency, and more

Telescopius
Weather forecasts detailing cloud cover, darkness, seeing, wind, temperature, and more