Hello, astro enthusiasts!
I would like to share with you an exciting project called SkyCompendium, designed to facilitate the preparation of your observation and astrophotography sessions. This tool is based on Gary Imm's famous “Compendium of Astrophotography Targets,” a database of over 3,000 carefully selected objects (rare nebulae, galaxy clusters, IFN zones, etc.).
The idea is to transform the old Excel file, which can sometimes be complex to use in the field, into a smooth, interactive web app.
Key features:
Real-time planning: The app uses your GPS location to instantly calculate which objects are visible above your local horizon at a given moment.
Offline mode: Once loaded, the app works without a network connection (local cache), ideal for isolated areas without 4G coverage.
Comprehensive object data sheets:
Field of view visualization via Aladin/DSS2 (framed at 120% of the target size).
Height graph for the current night.
Annual visibility graph to anticipate the seasonality of targets.
Detailed ephemeris: astronomical night times, sunrises/sunsets, and moon impact.
In-depth search: Direct links to Simbad and Aladin are integrated for each object.
100% free and community-based: This is a non-commercial project designed to help you think outside the box.
The application is available here: https://skycompendium-online.web.app
The tool is still being refined, particularly in terms of mobile usability, so feel free to test it and give us your feedback!
Clear skies to all!
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