Credits & acknowledgements
The app is built around public astronomy resources, survey imagery, Apple platform services, open tooling, and feedback from observers who care about making nights under the stars less confusing.
Last updated: May 28, 2026
This page expands the credits bundled inside AstroGuide’s Settings screen. It is not a complete license inventory, but it names the public resources, services, and communities that materially shape the app experience.
When AstroGuide shows source-specific imagery, forecast data, or subject references inside the app, it may also show local attribution near that feature. Those in-app credits remain the most specific reference for a particular screen or data view.
AstroGuide is designed, developed, curated, and packaged by Chris Hollander, with practical feedback from observers testing real planning workflows in the field. Catalog issue reports, sync edge cases, usability notes, and session-review feedback all help make the app calmer and more useful.
AstroGuide bundles an offline deep-sky subject catalog compiled from public catalog artifacts and app-specific normalization passes. Curated metadata adds reviewed names, aliases, classifications, planning notes, signal notes, and source citations where available. Subject detail views may also offer external reference links when a useful source exists.
Search, subject detail, Capture Studio, and related visual planning surfaces may use catalog imagery, curated fallback media, and survey-atlas material where coverage is useful. Northern emission-region context is especially indebted to public narrowband survey work, with unavailable or blank regions intentionally hidden rather than presented as meaningful guidance.
Weather planning uses Apple WeatherKit where available, then AstroGuide normalizes and caches the forecast context for observing-night scoring. Sky brightness and Bortle context use bundled lookup data derived from published light-pollution resources. Observed cloud context, where shown, uses NOAA/NESDIS GOES imagery products through app-specific display and availability logic.
AstroGuide is built for Apple platforms and uses Apple frameworks and services for the app interface, persistence, iCloud sync, notifications, maps and location integration, weather access, local storage, and system URL handling.
AstroGuide uses open source and platform tooling during development, testing, catalog preparation, release validation, and website publishing. The public site is built with Astro and hosted with GitHub Pages.
If you notice a catalog citation, media source, survey attribution, or description that should be corrected, please include the subject identifier, a screenshot if helpful, and the path you used to find it.
Send an attribution note