After that trial period (usually 15 to 90 days) the user can decide whether to buy the software or not. Trial software allows the user to evaluate the software for a limited amount of time. Demos are usually not time-limited (like Trial software) but the functionality is limited. In some cases, all the functionality is disabled until the license is purchased. Demoĭemo programs have a limited functionality for free, but charge for an advanced set of features or for the removal of advertisements from the program's interfaces. In some cases, ads may be show to the users. Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. This license is commonly used for video games and it allows users to download and play the game for free. There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use). Computers where an older version of Stellarium has been run will continue with the old settings unless defaults are reset.Ī small change was made to the Windows version which will fix some font rendering problems some people have.Freeware programs can be downloaded used free of charge and without any time limitations. New users will find that some plugins have been enabled by default. There have also been a large number of bug fixes and some performance improvements. Telescope control plugin: added manual equinox / epoch override. Satellites plugin: can now update TLEs from a local file. Satellites plugin: added new orbit prediction engine w/ orbits. Oculars plugin: customizable keyboard shortcuts. New feature for installing landscapes from ZIP archives. This release brings some interesting new features: * add your own deep sky objects, landscapes, constellation images, scripts. * ability to add new solar system objects from online resources. * plugin system adding artifical satellites, ocular simulation, telescope configuration and more * skinnable landscapes, now with spheric panorama projection * all new graphical interface and extensive keyboard control * spheric mirror projection for your own low-cost dome * fisheye projection for planetarium domes * very realistic atmosphere, sunrise and sunset * images of nebulae (full Messier catalogue) * constellations for twelve different cultures * asterisms and illustrations of the constellations * extra catalogues with more than 210 million stars * default catalogue of over 600,000 stars It is being used in planetarium projectors. It is available for Linux/Unix, Windows and MacOSX. Stellarium displays stars, constellations, planets, nebulas and others things like ground, landscape, atmosphere, etc. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. Stellarium renders 3D photo-realistic skies in real time with OpenGL. Stellarium is a free open source planetarium for your computer.
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