Astrogram — Professional Astrophotography Exposure Cards
Astrogram is a free web tool for astrophotographers. It generates beautiful,
Instagram-ready exposure cards from your capture session metadata — gear lists, filter
integration times (L, Ha, OIII, SII, R, G, B), Bortle scale sky quality, telescope,
camera, mount, and software.
Features
- Exposure card generator with LRGB, Ha, OIII, SII filter integration time tracking
- Circular progress ring visualization per filter channel
- Plate solving — upload your astrophoto to solve sky coordinates (RA/Dec) via WCS
- Annotation overlay: Messier, NGC, IC catalog objects and Tycho-2 named stars
- Bortle scale sky quality gradient selector
- Custom accent color and background image upload
- High-quality JPEG export for Instagram and social media
Who is it for?
Astrophotographers who want to share their session details — equipment, exposure times,
filters used, and sky conditions — in a visually polished format on Instagram, Reddit,
Cloudy Nights, or any astrophotography community.
Open Astrogram
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GitHub Repository