Open Source C++ Astronomy Software
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C++ Astronomy Software
View 202 business solutionsBrowse free open source C++ Astronomy Software and projects below. Use the toggles on the left to filter open source C++ Astronomy Software by OS, license, language, programming language, and project status.
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Stellarium
A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc. -
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Celestia
Real-time 3D visualization of space
Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects. -
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echoes
Echoes is a radio spectral analysis software for SDR devices
Echoes it's a radio spectral analysis software for SDR devices, designed for meteor scattering purposes. The older releases supported only RTL-SDR devices. They are very cheap SDR based on DVB-T TV tuner dongles based on Realtek's RTL2832U chipset. Starting from 0.50 Echoes embeds SoapySDR allowing the support of many other SDRs. Echoes doesn't demodulate neither decode any human-made signal. Its main goal is to analyze and record the total power of natural signals and generate screenshots and tabular data (CSV,) output in presence of particular peaks in a selected narrow range of frequencies. Since there is no demodulation, there is no provision for audio listening, except for a notify sound when an event has been recorded. Finally, Echoes can also operate getting an audio input, thus producing audio spectra. This way, Echoes can also be used with traditional receivers. -
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PreviSat
Satellite tracking software
PreviSat is a satellite tracking software for observing purposes. Very easy to use, it shows positions of artificial satellites in real-time or manual mode. PreviSat is able to make predictions of their passes, predictions of MetOp and COSMO-SkyMed flares, transits of all satellites, predictions of Starlink satellites passes and several other calculations. -
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HEALPix
Data Analysis, Simulations and Visualization on the Sphere
Software for pixelization, hierarchical indexation, synthesis, analysis, and visualization of data on the sphere. Please acknowledge HEALPix by quoting the web page http://healpix.sourceforge.net (or https://healpix.sourceforge.io) and publication: K.M. Gorski et al., 2005, Ap.J., 622, p.759 Full software documentation available at https://healpix.sourceforge.io/documentation.php Wiki Pages: https://sourceforge.net/p/healpix/wiki/Home Exchanging Data with HEALPix (in FITS files): https://sourceforge.net/p/healpix/wiki/Exchanging%20Data%20with%20HEALPix/ GDL and FL users should read https://sourceforge.net/p/healpix/wiki/HEALPix%20and%20GDL/ -
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The C-Munipack is an astrophotometry software package, which offers a complete solution for reduction of images carried out by CCD or DSLR camera, intended on a observation of variable stars, exoplanets and minor Solar System bodies. It provides a simple and intuitive graphical user interface.
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Astrolog
Astrology calculation, charting, and analysis
Astrolog is astrology software featuring many types of computation, display, graphics, comparison, and analysis. It supports multiple environments, such as MS Windows and Unix X Windows, with complete C++ source code available. For more information see the Web site: http://www.astrolog.org/astrolog.htm -
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libpasastro
Provide Pascal interface for standard astronomy libraries
Provide shared libraries to interface Pascal program with standard astronomy libraries. libpasgetdss.so : Interface with GetDSS to work with DSS images. libpasplan404.so: Interface with Plan404 to compute planets position. libpaswcs.so : Interface with libwcs to work with FITS WCS. This libraries are used with the following projects: https://sourceforge.net/projects/skychart/ https://sourceforge.net/projects/ccdciel/ https://sourceforge.net/projects/virtualplanet/ https://sourceforge.net/projects/virtualmoon/ -
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Xplanet is a solar system simulator which calculates accurate positions for the major planets and satellites. It displays multiple bodies, eclipse shadows, and customizable labels and markers.
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Project Apollo - NASSP (also known as NASSP or NCPP) is an add-on for the Orbiter space flight simulator. Project Apollo simulates the Apollo missions to Earth orbit and the Moon and the planned post-Apollo missions that never flew.
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DarkLight Cover/Calibrator
DIY project to build a cover, flat panel or combo flip-flat panel
The DarkLight Cover/Calibrator (DLC) is a DIY project to build a motorized telescope cover, flat panel, or a combination flip-flat system. Its modular design supports various setups: a 12V light panel without a servo for a wall-mounted calibration panel, a servo-only cover for sky flats, or both integrated into a flip-flat mechanism. The DLC also includes optional dew heating to reduce extra equipment and cabling. With available drivers, it works with ASCOM or INDI. We’re excited to announce that the DarkLight Cover Calibrator project has officially moved to GitHub! 🔗 New GitHub Repository: 👉 https://github.com/10thTeeAstronomy/DarkLight_CoverCalibrator © Nathan Woelfle 2025. All Rights Reserved. Permission granted for personal and academic use only. Code may not be copied or used without proper credit. -
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Navigational Algorithms
Navigational Algorithms - Marine navigation
- Celestial Navigation: Sight Reduction, Line Of Position, Fix... - Positional Astronomy: Nautical Almanac, RA, GHA, Dec - Coastal Navigation: Range, Bering, Horizontal angles, IALA... - Sailings: Rhumbs, Loxodromic, Orthodromic, Meridional parts... - Weather , Tides - Software: PC, Android https://sites.google.com/site/navigationalalgorithms/ -
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Pulsar software for forming timing residuals. Developed mainly by George Hobbs and Russell Edwards at the ATNF.
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Solar Model
Model of the Solar System
The Solar Model is real time modeling of solar system. It allows user to navigate in space, to control time counting (speed-up time flow) and estimate movement of space bodies, bind camera to space objects (for example, from Moon on Earth in real time). -
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ASIStudio
All-in-one Astrophotography Software Works on multi-OperatingSystem
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gcr_convert
converts cosmic-ray files from GALPROP for viewing / plotting.
The GALPROP program (http://galprop.stanford.edu) computes cosmic-ray propagation in the Galaxy, in 2D or 3D. The ouput cosmic-ray distribution is in the form of FITS files which however are not convenient for viewing or plotting with the standard ftools program fv, since the files have 4 or 5 dimensional arrays (due to the momentum and species axes) while fv handles only 3 dimensional arrays. This program converts to fv-compatible FITS files, either from 2D to (R,z) or from 3D to (x,z) at y=0 or (x,y) at z=0, in each case for a chosen cosmic-ray species. The third axis is momentum in each case. The distribution can be viewed with fv as a colour image, contoured, output to a file etc. The program is stand-alone and requires only the cfitsio library to be installed. Build instructions are in the program header. The FITS.cc/FITS.h class used provides simple convenient access to image data, useful also for other projects. For fv and cfitsio see http://heasarc.gsfc.nasa.gov/fitsio -
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Astrology software inspired by the SYMBOLON deck. This software calculates the planet positions and make symbolon card tables according to the calculated constellation. It can draw the classical circular horoscope also.
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A code for fast multi-dimensional density estimation . Instead of assuming an a-priori metric definition, it calculates a locally adaptive metric for each data point by using, a Shannon Entropy based, binary space partitioning scheme.
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Yet another astrology software. Focused on Primary Directions. Based on Swiss Ephemeris. Still has a lot of things in queue to implement.
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PP3 creates celestial charts. It generates resolution independent sky maps of very high graphical quality. They can be used for example as illustrations in books or on web pages. Databases are included but you may use own data if you wish.
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OpenUniverse is a fun, fast and free space simulator. It currently focusses on the Solar System and lets you visit all of its planets, major moons and a vast collection of smaller bodies in realtime 3D (using OpenGL).
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PGMania
Astrophotography image & video processor. Full processing cycle
PGMania is a universal package for processing deep space images. The program provides wide and unique functionality, a powerful and flexible tool with a clear and user-friendly interface. The program performs all image processing cycles for astrophotography, including filtering, cleaning, aligning, image calibrating, stacking, post-processing, format conversion, cropping, rotations, many special operations and much more. PGMania is environmentally friendly - it does not clutter your photos with something that was never there. You get full control over all processing processes and the most clean and accurate result at all cycles. The program has a clear and user-friendly interface and detailed help for all stages of processing. -
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Open PECTool
Open PECTool - manipulate peroidic error data for Celestron mounts.
This is clone of the Celestron PECTool used to upload, download and manipulate PEC data. It is intended to work with Celestron Nexstar mounts like NexStar GPS, NexStar GPS-SA, NexStar iSeries, NexStar SE Series, NexStar GT, Advanced-VX, Advanced-GT and CGE mounts. Communication to the hand control is 9600 bits/sec, no parity and one stop bit via the RS-232 port on the base of the hand control. To build it libnexstar version 0.11 or newer is needed, which can be found here: https://sourceforge.net/projects/libnexstar/ Mac OSX binary is available here: http://sourceforge.net/projects/openpectool/files/prebuilt/openpectool-0.0.1.dmg/download -
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EXTREMA is an interactive program with publication quality graphics and mathematical analysis capabilities. EXTREMA can be GUI and/or command driven. The command language includes conditional branching, looping and subroutine calling constructs.