Astronomy Resources

Books

• Astronomy 2E (OpenStax) - Free comprehensive textbook
• The Backyard Astronomer's Guide
• NightWatch: A Practical Guide to Viewing the Universe

Online Courses

• Coursera Astronomy Courses
• Khan Academy Astronomy

Clear Sky Forecasts

• Clear Dark Sky - Astronomy weather forecasts
• Clear Outside - Hourly cloud & transparency

Sky Planning

• Stellarium Web - Free planetarium software
• Time and Date Astronomy - Moon phases, planet positions

Image Processing

• Siril - Free image processing
• GIMP - Free Photoshop alternative
• PixInsight - Professional (paid)

Utilities

• SharpCap - Capture & live stacking
• AstroImageJ - Data analysis

Forums & Groups

• Cloudy Nights - Equipment & discussions
• r/astrophotography - Reddit community
• r/astronomy - General astronomy

Local Clubs

Find a local astronomy club near you for star parties, equipment demos, and mentorship!

Projects

• Zooniverse Astronomy - Classify galaxies, find planets
• AAVSO - Variable star observations
• Asteroid Tracking - Help track near-Earth objects

Object Catalogs

• Telescopius - Deep sky object planner
• Messier Catalog - 110 deep sky objects
• NGC/IC Project - Comprehensive catalog