Astronomy & Astrophotography Resource Library

Curated by Patrick Cosgrove

Created -July 2021. Major Revisions - May 2025. Jan 2026

Welcome to a curated reference library of astronomy and astrophotography links maintained by Patrick Cosgrove (Cosgrove’s Cosmos). This started as an astrophotography-focused list and expanded over time to include broader astronomy interests—while keeping a practical, observer-and-imager orientation.

Created: July 2021  •  Major revision: May 2025  •  Last updated: January 2026

Dead link or strong suggestion?
Use the submission form at the bottom of this page. Please include the URL, a one-sentence description, and the best category.

Start Here

If your goal is astrophotography, start with Astrophotography Gear & Imaging and Astrophotography Software & Processing. If you’re planning what to observe tonight, use Observing & Sky Events. For target research and annotation, use Targets, Catalogs & Databases. For background concepts, start with Astronomy Fundamentals.

Browse by Category

Astronomy Fundamentals
Concepts, history, and general learning resources that provide context for what you observe or image.
Observing & Sky Events
Planning and tracking: visibility, ephemerides, sky conditions, and practical tools for observers and imagers.
Targets, Catalogs & Databases
Catalogs, databases, and survey/atlas resources used for target discovery, research, and annotation.
Astrophotography Software & Processing
Capture/sequencing, guiding, plate solving, stacking, processing, and workflow tutorials.
Astrophotography Gear & Imaging
Hardware, capture workflow, power/cabling, and home observatory + remote imaging infrastructure.
Kids & Media
Kid-friendly learning, games, and approachable astronomy media for outreach and families.
Astro Community
Forums, organizations, and communities to share knowledge, troubleshoot, and connect.

Notes on Use and Maintenance

  • This library is curated, not exhaustive. Inclusion is based on practical usefulness and overall quality.
  • Links change over time. If something is broken or clearly outdated, please report it using the form below.
  • Some tools fit more than one category. When that happens, a link is kept in one primary location with cross-references elsewhere.

Report a Dead Link or Suggest a Resource

Please send reports of dead links or new suggested resources via email to Contact@CosgrovesCosmos.com