Astronomy5 Planner

Discover the night sky – precisely planned for your location.

Originally developed as a tool for astronomy education, the Astronomy5 Planner is now the perfect companion for entering the world of visual astronomy. Whether you are a teacher planning your next class, taking your first steps at the telescope, or just need a quick overview as an experienced stargazer: See at a glance what is worth observing tonight (or during the day!).
Use the core features for free forever, or unlock the full universe with the Pro version (fair one-time purchase, no subscriptions!).

Free Core Features:

🪐 Solar System & Daytime Observation: Precise rise and set times for the moon and planets. Unique: The app shows which objects are visible during the day (e.g., for school classes) – including vital safety warnings.

🛰️ ISS Tracker: Live map and precise forecasts of visible passes for the next few days. Never miss the bright dot of the space station again.

🌠 Meteor Showers: The best annual meteor showers at a glance, including a lunar interference indicator.

🌌 Deep Sky Overview: Curated lists of the most beautiful nebulae and galaxies, including constellation maps (Level 1) for basic orientation.

🌤️ Astro Weather (Basic): A dedicated observation planning dashboard featuring dynamic time windows for day and night, plus a quick overall assessment of conditions.

🖼️ Astro Gallery (Daily 20s): Daily changing, random NASA astrophotography.

Pro Features (One-time purchase):

🔭 Smart Starhopping (Deep Sky Pro): Unlock the deep interactive zoom maps (finder & 4° eyepiece views), Telrad rings, and exact telescope optics simulation (Newtonian, Zenith mirror).

☁️ Advanced Astro Weather: Hourly forecasts for your observing night. Includes detailed cloud layers (low, mid, high) and pro metrics like an automatic dew warning (protects telescope lenses from fogging).

✨ Interactive Bortle Test: Determine your local light pollution via an interactive star test on the real sky. The app automatically filters deep-sky objects accordingly (e.g., warning you if an object is "Washed out").

☄️ Bright Comets: No more outdated databases! We only show comets currently bright enough for amateur telescopes or binoculars (data from COBS & MPC).

🌟 Aurora & Space Weather: Live data (solar wind) and 3-day forecasts. Includes background alerts for high geomagnetic activity and noctilucent clouds (NLC) forecasts.

🌑 Eclipses: Preview all solar and lunar eclipses up to the year 2075 with pinpoint local visibility calculation for your location.

Why Astronomy5 Planner?
• Built-in knowledge: Numerous ⓘ-buttons explain astronomical concepts and observation tips right where you need them.
• Privacy: No user accounts, no tracking. Your location is processed locally.
• Offline capable: Many features (like star maps and ephemerides) work without the internet.
• Night-friendly: Built-in red-light mode to protect your dark adaptation at the telescope.
• Ad-free: Focus on what matters.

Start your journey through the universe now!