The code can even be reused for other purposes it is already being used for Mars data and in medical research. It is open-source software, meaning that all its components are freely available so others can help to improve the program. JHelioviewer is written in the Java programming language, hence the 'J' at the beginning of its name. This is an interactive visual archive of the entire SOHO mission." With JHelioviewer, everyone can do this in minutes. "Before, it took hours to combine images from different telescopes to make a movie of the Sun for a given period. "We wanted to make it easy to view solar images from different observatories and instruments, and to make it easy to make movies," says Daniel Müller, ESA SOHO Deputy Project Scientist. They can export their finished movies in various formats, and track features on the Sun by compensating for solar rotation. Using this new software, users can create their own movies of the Sun, colour the images as they wish, and image-process the movies in real time. ![]() The downloadable JHelioviewer is complemented by the website, a web-based image browser. More than a million images from SOHO can already be accessed, and new images from NASA's Solar Dynamics Observatory are being added every day. Developed as part of the ESA/NASA Helioviewer Project, it provides a desktop program that enables users to call up images of the Sun from the past 15 years. JHelioviewer is new visualisation software that enables everyone to explore the Sun.
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