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  • "The almanac module for the DRUPAL CMS provides twilight times, sunrise/set and moonrise/set data for any location. This can be a useful addition to sites that include astronomy, religious, education, energy-related, weather, or astrology information. Sites devoted to a range of outdoor activities, from night photography to fishing, can also benefit from adding an almanac.

  • Multipurpose planetarium. One of the best around, and still getting better... The organization of the menus is particularly innovative and the graphical display options very flexible. The negative point is its slowness, particularly with all the design trimmings activated; also, it does not allow direct printing.

    On the graphical side, it offers the classical representation of the celestial sphere; the situation of the sky over the local horizon; elongations and heliocentric position of the planets and a tool to draft/register your sunspot observations.

  • AstroCalc enables you to :
    - To calculate the position of planets and give their appearance.
    - To calculate hours of Rising/Transit/Setting
    - Visualization of the apparent diameter of planets ones compared to the others…
    - Visualization of the position of planets on the ecliptic.
    - Visualization of planets in heliocentric position.
    - Positions of the satellites around Jupiter, as seen from Earth.
    - Calculate the position of comets...
    - Download the appearance of the sun directly on web ( SoHo ).

  • The Electric Astrolabe is a fully animated planetarium program in the form of a planispheric astrolabe. The singular advantage of the astrolabe display is that it shows the entire sky, both visible and invisible, on a single screen. Unlike a static instrument, Astrolabe includes accurate positions of the Sun, Moon, and planets. In addition, The Electric Astrolabe includes over 150 stars which can be displayed as constellation asterisms and all of the Messier objects. Either a north or south projection can be shown.

  • Just how big is Jupiter? Need some fast facts about our solar system? Your search has ended! The Astronomy Guide Pocket Directory Database is the perfect reference source for looking up planets, stars, constellations, and even the history of space travel.

    The Database contains:

    • Full-colour Cover Page, Storage Card Compatibility, Searchable Records
  • A Java applet (available for download and offline use) that helps you to find your way in the night sky quickly and easily.

    Features include:
    . display a sky map for any time, for any position on Earth;
    . find out the names and other information about the celestial bodies (stars, planets, etc.) on the display;
    . find celestial bodies;
    . find constellations;
    . create a printable version of the sky chart in the PDF- or GIF-format;
    . display a map (orrery) of the solar system.

  • Offers advanced image processing and acquisition functions . Its originality lies in the fact that it is entirely reprogrammable using simple scripts.

    Completely configurable : You can write scripts to automate all types of observations and even completely redesign the graphic user interface. The powerful and increasingly widespread scripting language used is TCL/TK, which is easy to learn. Ready-to-use and free scripts are available.

    Multi-purpose : AudeLA enables not only camera control, but also full telescope control, locally or at long distance via a network.

  • Software for Macintosh computers, complete with manuals teaches binary star concepts may be used in a classroom or lab setting or for self-education.

    Requires: Mac OS 7.1 or better.

  • A virtual planetarium showing the solar system planets relative to any other planet.

    Planets can be viewed in ecliptical, equatorial or horizontal views. Ephemeris tables with rise, transit and set times of a planet can be calculated for any given location in another planet (e.g. rise and set times of the Earth as seen from Mons Olympus in Mars), NB: Seems to have display issues with JRE 1.7 and Win7 64bits.

  • Celestia is a free real-time space simulation that lets you experience our universe in three dimensions. Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.

  • ChView is intended as a three-dimensional aid to: viewing some of the nearer stars of our galaxy; navigating the distances between them; and accessing basic information.

    Data files provide nearly 8,500 stars and other celestial objects believed to lie within 150 light-years (ly) of Earth, in a 300-ly diameter sphere.

  • These Excel spreadsheets include two experiences intended for use in lower-level undergraduate non-calculus based Astronomy lab courses (non-Science majors).

    The interactive labs are focused on: Kepler's Third Law and Stellar Models.

    Each lab gathers information about the students grouped and creates a pre-formatted report that can be saved as HTML, printed or emailed to the instructors in the end.

    They can also be used by single individuals looking for an introduction to these subjects.

    Note: Requires MS Excel 97 (98 for the Macintosh version) or later.

  • Astronomical Almanac for Acorn RISC OS Computers.

  • Calculates parameters related to the size and placement of the diagonal mirror of a Newtonian telescope.

  • E.T. Counter roughly calculates the number of inhabited planets and advanced civilizations that currently exist in our galaxy, based on your own specifications and assumptions. It relies on estimated percentages, probabilities and average values.

    The algorithm is inspired by Isaac Asimov's book "Extraterrestrial Civilizations" and the Green Bank formula (mainly created by F. D. Drake).

    Educators and SETI Hunters alike will find useful.

  • The primary goal of Earth Orbit Objects is to predict satellite passes for your local area. Views are displayed using 3 modes Earth, globe and sky. Additionally, Iridium flare track predictions can be exported to and seen in Google Earth.

  • EBS is an astronomy application to visualise the orbit and synthetic light curve of binary star systems. It is made for educational purposes and for having fun.

    Main features include:
    . Elliptical orbits
    . Star selection by MLR-parameters or spectral class
    . Light curve plotting
    . 2D and 3D orthographic (full screen) view of binary system
    . Export light curve and orthographic view to bitmap. . Exporting light curve to data file.

  • EfeCalc is a Windows program that produces highly accurate astronomical ephemeris, including: rise, transit and set times for the Sun, Moon and Planets and ecliptic, equatorial and horizontal coordinates; mean and apparent positions of the Stars; lunar and solar eclipses (with maps); Moon phases and age, perigee and apogee; elements for the observation of solar physics; equation of time (with graphic); parallax of the Moon, stars and planets; illuminated fraction of the planets; calendar events (Easter, seasons, Chinese New Year etc..); extensive database of locations around the world; data

  • "Application being developed by Tom Morris of and Fullerton College. Its goal is to help astronomers, astrobiologists and astronomy enthusiasts visualize exoplanet environments.

  • A free software plug-in for Adobe Photoshop that makes a treasure trove of archival astronomical images and spectra from the NASA/ESA Hubble Space Telescope, the European Southern Observatory's Very Large Telescope, the European Space Agency’s XMM-Newton X-ray observatory, NASA’s Spitzer Space Telescope and many other famous telescopes accessible to home astronomy enthusiasts...

  • Foucault Test Analysis for Windows is a program for the evaluation of the readings taken in the Foucault test. It offers the following features:

    - 3 Evaluation types: waveerror-profile, relative transverse aberration, Millies LaCroix-plot
    - Evaluation reports can be saves as JPEG's
    - Monte-Carlo-Analysis
    - Simulation of the shadowgrams on the basis of your readings
    - All readings are stored in a logfile.

  • «The aim of this project was to obtain and use a knowledge of gravitational lensing to develop a computer model to simulate lensing effects on distant sources(...) it has succeeded (...) in producing a working simulation of a point mass gravitational lens system - which can not only simulate basic lens theory, but can also reproduce the lensing effects of an, approximated, observed system.

  • «A simple application that allows you to view the Milky Way Galaxy from overhead and zoom in and out. Produces a rather detailed output with scale bar, various telescope objects and depicts the galaxy's spiral arms.»

    Star Trek fans will optionally like to see the fictitious boundaries of the several civilizations overlaid.

  • Simulates interacting galaxies. Features:     

    • Parameters. Number of particles, particle distribution and all physical initial values can be modify.
    • Rotating. The dynamical presentation of the interaction can rotate around all three axes from 1 up to 180 degree per key press.
    • Zooming. Zoom in and zoom out is possible in 4 percent steps.
    • Scale and direction of axes always displayed.
    • Colours. Colours of menu and the particle colours can be modify.
    • Parametering of values. Up to 10 values can assign to each parameter.
  • This program for Windows simulates the collision of two galaxies. Each galaxy has its mass, number of stars, and orientation set by the user. The collision is viewed in two windows, an X-Y, and X-Z view. The facility exists to view the collision from any desired view point via a 3D spatial viewer. The initial conditions of the collision can be saved to file for re-running at a later date. A full help file is provided giving instructions and tips.

  • This is a simple program designed to graphically portray how disk galaxies can transform themselves through collisions. The two disks are set up with up to 3000 test 'particles' in Keplerian orbits around two centrally-dominated masses -- approximately at the sophistication of the landmark Toomre and Toomre papers of the 1970's.

    The goal of the program is to facilitate curiosity and tinkering, as well as providing an impressive real-time movie of the galactic interactions.

  • This simple DOS program written in Turbo Pascal simulates globular clusters pictorially. The user specifies the number of stars that the cluster is to contain. The resulting simulation is then plotted out.

  • With Google Sky Map for your Android phone you can discover and browse the night sky just by pointing your phone to space.

    By using your Android phone's orientation sensors, we can show you a star map for your location. Explore planets, stars, constellations, and more! Learn the name and location of space objects and impress your friends.

  • Einstein's General Theory of Relativity demonstrates that a large mass can deform space-time and bend the path of light. So, a very massive object, such as a cluster of galaxies can act as a gravitational lens. When light passes through the cluster from an object lying behind it, the light is bent and focused to produce an image or images of the source. The image may be magnified, distorted, or multiplied by the lens, depending upon the position of the source with respect to the lensing mass.

  • Gravity 6 simulates planets orbiting stars, moons orbiting planets and stars orbiting stars and all of the action can take place in 3D.

  • Soar through the universe with the Hubble Space Telescope, exploring some of its most significant discoveries – from dark energy to colliding galaxies. Descend to Earth, where Hubble's successor, the James Webb Space Telescope, readies for the future of astronomy. Image galleries, video, and interactives bring home the telescopes' science and engineering in this pair of free books available both in PDF and iPAD formats.

  • A fine program for beginners about the constellations. Easy to use and with a lot of information of where and when to look.

    All 88 star groups are featured, each on its own page. The program was written specifically to show the constellations as they are oriented and as you seen them in the night sky.

    Some key features:

  • Part of KDE's «edutainment» project, «provides an accurate graphical simulation of the night sky, from any location on Earth, at any date and time. The display includes 130,000 stars, 13,000 deep-sky objects, all 8 planets, the Sun and Moon, and thousands of comets and asteroids.

    Now also available for Windows and Macintosh.


    • Salient features:
  • "Lunar Rover SIM is based on NASA's Constellation Program architecture. It lets you drive the Lunar Electric Rover (LER) around on the moon, test multiple cameras/views, and dock with the lunar habitat base. It also features LOX refueling stations, the ATHLETE rover, and the lunar EVA suit.

  • "Free software tool for the intermediate to advanced student of lunar topography. It permits Moon images in a variety of formats to be located, viewed and compared with a uniform set of tools. It also permits highly accurate measurements to be made on those images.

  • "Exploration of other planets may involve winged flight vehicles such as This Mars Concept, to bridge the capabilities gap between Orbital and Surface vehicles. NASA is researching how to design vehicles that operate in different and unique environments. Presented here is a simulation of one such concept vehicle that you can download and fly yourself.

  • MathLib is a PalmOS shared library which makes a complete set of IEEE-754 double-precision math functions available to other PalmPilot applications (required by many astronomy apps for Palm). These functions include all the standard routines normally accessed by including "math.h" on other systems, including trigonometry (with inverse and hyperbolic), logarithms, exponentiation, and miscellaneous helper functions.

  • Mirapla Sky is designed for learners. It provides a realistic view of the stars as seen with the unaided eye, which allows you to practise identifying stars and constellations during daylight hours, and when the weather is cloudy. Due to its high degree of realism and simplicity it is recommended for learning the constellations in conjunction with a paper planisphere.

    Originally built for DOS it later got a basic Windows interface.

  • Flash animations and simulations for astronomy education. Topics include seasons, moon phases, coordinate systems, light, and more.

  • Growing number of applications to be used with mobile devices pertaining subjects such as Aeronautics, ISS & Space Shuttle, Solar System exploration, Universe and Earth.

  • Program identical to Solar System. Simulates the orbits of masses in space. Allows the modification of parameters and the creations of new models.

  • Fork by one of the early Stellarium developers. It has been tailored specifically for planetarium and educator use. The emphasis is on usability, realism, feature stability, and performance.

    Backward compatible with scripts for Stellarium 0.8.2 and earlier using its own StratoScript language.

  • Realistic space flight simulator using proper physics for the modelling of planetary motion, gravitational fields, free space and atmospheric flight etc. As such, it is more challenging to master than an arcade game - you should at least have some basic idea about mechanics and planetary motion to get the most from it.

  • An application that calculates the polar coordinates of the different planets of the Solar System in their orbits and shows a window with a graphic simulation of the planetary movement. The results are exportable (.html, .csv and .txt); an Help File (English and Portuguese) is included.

    New with version 2.0: Some errors regarding to the positions were corrected, the output format HTML was redesigned and a window with a Graphic simulating the planets movement was added.

  • Orbit Reconstruction, Simulation and Analysis (ORSA) is a framework for Celestial Mechanics investigations. With the xorsa application it is possible to create, simulate and analyze gravitationally interacting systems like the Solar System. All the operations are performed using a comfortable, coherent and well designed graphical user interface.

  • "Open Source differential photometry Code for Accelerating Amateur Research is an apen source project aimed at helping you begin to analyze observations of transiting extrasolar planets with differential photometry.

  • Optical design program. OSLO is used by scientists and engineers to design lenses, reflectors, optical instruments, laser collimators, and illumination systems. It is also used for simulation and analysis of optical systems using both geometrical and physical optics. In addition to optical design and analysis, OSLO provides a complete technical software development system including interactive graphics, math, and database libraries.

  • «Partiview (Particle View) is a program that visualizes and animates three dimensional particle data. Within Partiview, you have the ability to navigate through 3-D data, as if you're "flying." Partiview is not limited to particle data; it can display 2-D images as well as multiple 2-D polygons that can be built into 3-D surfaces. It cannot record flight paths, though it can play them.

  • Planet Phase draws the planets positions and the phases of planets. You can animate movement of planets with various time steps. It shows phases for Mercury, Venus, Mars and Jupiter.

    A very simple software for a quick view of planets phases.

  • A reference tool that displays several properties for a selected planet. There are 18 properties divided into four categories - orbital, physical, axial, and atmospheric. The Apprentice shows all 18 properties for your selected planet in one scrollable window.

    Features include:

  • Planets is a simple interactive program for playing with simulations of planetary systems, released under the GPL. It runs on Linux and Windows, and could doubtless be ported to your favourite flavour of Unix.


  • A program which exports to .PDF and lets you print in good old fashioned paper a planisphere (a couple of sheets of paper very easy to assemble) appropriate for you latitude which can then be used to simulate the appearance of the sky for any hour and day over the year. Planispheres are a must for people starting to familiarize with the night sky and a helping hand with the task of identifying stars and constellations.

  • A program designed for the academic teaching of Astronomy. It was born with the idea of filling a hole in this area and with the aim of being used in all possible universities. For this purpose, the program is completely free and it has been developed with a certain care so that its hardware requirements are as low as possible.

    Features/modules include:

  • Project CLEA (Contemporary Laboratory Experiences in Astronomy) develops laboratory exercises that illustrate modern astronomical techniques using digital data and colour images. They are suitable for high- school and college classes at all levels, but come with defaults set for use in introductory astronomy classes for non-science majors.

  • This program is designed to assist students in observational astronomy to learn the use of star charts. It is also an excellent reference for learning the sky; positions of the planets, Sun and Moon; Messier objects; and other features. Has online features linked to the Digitized Sky Survey and the SFA Astronomy web site.

    Built around the printable star charts created by Dr. Dan Bruton of Stephen F. Austin State University, includes the North and South Celestial Spheres.

    A Java version is also available.

  • The Best of Soho CD-Rom is an interactive multimedia exploration of the Sun through the eyes of SOHO. The CD covers topics ranging from the history of solar exploration to new scientific results and the Sun's influence on the Earth's environment. The CD-ROM contains over 100 movie clips and more than 400 images.

    Note: This is the Macintosh version; a PC/Windows version is also available.

  • Plots the gravitational behaviour of celestial bodies, allowing the user to construct new models by feeding his own values.

    It comes with a few pre-programmed models. For instance, what would happen if a new planet, lost in space, was to approach our solar system? Or, how would behave a binary system, in which each star was orbited by a planet? Solar System allows you to visualize the effect.

  • Generates a realistic solar system model and planets in 3 D. It can display the planets and their orbits, the Sun and the Moon. The nine planets including planet earth and their detailed physical & chemical information and image pictures is also displayed including solar power, solar energy and solar eclipse details. The graphical output is in high-resolution 3D full colour format and the orbit view can be adjusted and the orbits tilted & rotated to any angle. The speed of the solar system can also be varied.

  • Sssim Studio is designed to be used in lectures or live shows in planetariums, etc. It has dual display output(from single PC) - projects to full screen via projector, while user GUI window operates from PC display - for example.

    Furthermore, Sssim Studio contains authoring tools of its autoplayscripts and also the ability to share the content over the internet.

  • A small planetarium application designed for use with mobile phones (Sony Ericsson P800 and Nokia Communicator), PDAs (Psion Series 5mx / 7 & netBook, Sharp Zaurus SL-5500) and other platforms that have a Java runtime environment, including PersonalJava devices.

    Features include: