Best Open Source Astronomy Software 2025

Astronomy Software

Astronomy Linux Mapping BSD Clear Filters

Browse free open source Astronomy software and projects for Linux and BSD below. Use the toggles on the left to filter open source Astronomy software by OS, license, language, programming language, and project status.

Simple, Secure Domain Registration
Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.

Sign up for free
MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

Start Free
1

flatplanet

A web atlas using the planetary body renderer, Xplanet. Explore the solar system. Overlay clouds, cities, weather forecasts, and more. Navigate by point and click. Search global databases.

Downloads: 13 This Week

Last Update: 2013-02-21
See Project
2

Celestial Precomputation

Sight Reduction for Air Navigation with Python

Warning: I found an error if the DR position is on the southern hemisphere. The PUB249 pdf files did not show this error and are correct (as far as I checked). All Revisions 8+ and the Windows release have been fixed. This Python TK application calculates a good set of stars for a 3 star fix, makes all calculations similar to the FAAs Celestial Computation Sheet (see FAA doc FAA-H-8083-18). Also, you can create a PDF file that generates Pub 249 Vol 1 for any epoch you specify. The PUB249 as PDF is found under "Files". I wrote this for my aircraft bubble octant :-) It is mainly useful for air navigation as it assumes a bubble sextant but may be used for normal sextants as well. Requires Ephem and ReportLab (optional for PDF output) Not to be used for real-world navigation!

Downloads: 1 This Week

Last Update: 2021-11-30
See Project
3

BandSystem Spectral Analysis System

The 'BandSystem' spectral analysis system is a rule-based system for the classification of mineral spectra. It consists of a preprocessor, a feature extractor, and a rule-based system to identify minerals from infra-red reflectance spectra.

Downloads: 0 This Week

Last Update: 2013-02-22
See Project
4

JOSAST

JOSAST ( Java Open Source Amateur Satellite Toolkit) is a set of java source code used for amateur satellite, hamradio and also astronomia activities ... Reusable package and complete software should be available.

Downloads: 0 This Week

Last Update: 2013-04-17
See Project
Our Free Plans just got better! | Auth0
With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.

Try free now