# Astronomy5 Planner

> Astro planner & Push-To telescope finder – 100% offline field ready.

Canonical page: [https://chrome-stats.com/d/com.a5p.planner](https://chrome-stats.com/d/com.a5p.planner)

## Overview

- **ID:** `com.a5p.planner`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** A5P
- **Category:** BOOKS\_AND\_REFERENCE
- **Downloads:** 24
- **Version:** 3.0.1
- **Last updated:** 2026-08-30
- **First published:** 2026-07-19
- **Publisher country:** DE
- **Size:** 30 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.a5p.planner)
- **Privacy policy:** [https://a5p-legal.web.app](https://a5p-legal.web.app/)

## Description

Precise observation planning and telescope navigation for visual observers, observatories, and astronomy education. 100% offline field-ready – no account, no tracking, no ads.<br><br>Features at a glance:<br><br>🪐 Solar System &amp; Daytime Observing:<br>• Accurate rise, set, and transit times for the Sun, Moon, and planets.<br>• Daytime planet visibility indicator with vital solar filter safety warnings.<br>• Moon phases, libration, and visual Venus phase state.<br><br>🌌 Deep-Sky &amp; Object Catalog:<br>• Curated catalog of nebulae, galaxies, star clusters, and double stars.<br>• Filtering by altitude, Bortle light pollution level, and object class.<br>• Interactive finder and eyepiece maps featuring Telrad rings and exact telescope optics simulation (Newtonian, Refractor, Zenith mirror).<br><br>🔭 Push-To Telescope Assistant (DSO Pointer):<br>• Turns any telescope (Dobson/Alt-Az) into a digital Push-To system using smartphone sensors.<br>• Precise 3D rotation matrix (Kabsch-Slerp) via 3-star calibration compensates for mechanical mounting offsets.<br>• Live directional guidance (dAlt / dAz) for quick object alignment in the eyepiece.<br>• Operates completely offline in the field.<br><br>🌤️ Astro Weather &amp; Observing Conditions:<br>• Dynamic evaluation of daytime and nighttime observing conditions.<br>• Hourly cloud coverage forecasts (low, mid, high) and automated dew point warnings.<br>• Interactive Bortle star test to measure local light pollution.<br><br>🛰️ ISS, Comets &amp; Eclipses:<br>• Live map and visibility forecasts for ISS passes.<br>• Currently bright comets (filtered for visual observer feasibility).<br>• Eclipse calculator up to 2075 with local obscuration calculations.<br>• Aurora and space weather forecasts (Kp index).<br><br>Practical Field Features:<br>• 100% Offline Capability: All ephemerides, star maps, calculations, and 3-star Push-To finder run entirely without an internet connection.<br>• Red Light Mode: Dedicated night mode to preserve dark adaptation under the night sky.<br>• Privacy First: No user accounts, no tracking, no advertising.

## Rankings

- #2,516,504 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.a5p.planner.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.a5p.planner)