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- | The orrery is a simple open-source application for [[Open development/Maemo roadmap/Fremantle|Maemo 5]] which displays the night (and day!) sky. It is nowhere near as elaborate as, for example, kstars, xephem or stellarium. It is intended to be a small, finger-friendly application, requiring no network connection. The current stable version is 3. | + | The orrery is a simple open-source application for [[Open development/Maemo roadmap/Fremantle|Maemo 5]] which displays the night (and day!) sky. It is nowhere near as elaborate as, for example, kstars, xephem or stellarium. It is intended to be a small, finger-friendly application, requiring no network connection. The current stable version is 3.7.x (the x just increments when bugs are fixed). The program version is shown on the "Symbol Key" page. |
The source code is hosted on [https://github.com/kenyoung/orrery this github repository]. The version there may not have gone through the Maemo Community QA testing. The most recent version which has been vetted by the community is available in the Maemo [[Extras]] catalog. This wiki page describes the behavior of the version of the program available in the Extras Devel catalog. | The source code is hosted on [https://github.com/kenyoung/orrery this github repository]. The version there may not have gone through the Maemo Community QA testing. The most recent version which has been vetted by the community is available in the Maemo [[Extras]] catalog. This wiki page describes the behavior of the version of the program available in the Extras Devel catalog. | ||
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At the bottom of the eclipse display page a map is presented showing the portions of the earth which can see the eclipse. The observer's location is indicated with a red dot, and the map itself is centered at the longitude of the observer. The light blue dot shows the position on the earth for which the moon is at the zenith at the moment of maximum eclipse. The light blue line shows the longitude for which the moon is on the [[:wikipedia:Meridian_(astronomy)|meridian]] at the moment of maximum eclipse. The darkest grey region shows the portion of the earth for which none of the eclipse can be seen. Observers in the white region can see at least some portion of the maximum phase of the eclipse. In other words, if the eclipse is total, an observer in the white region sees at least some part of the total phase of the eclipse. If the eclipse is partial, an observer in the white region sees a partial eclipse. Other shades of grey are used for regions that, for example, can only see the partial phases of a total eclipse. The next image to the right indicates the meaning of the various shaded regions and lines on this eclipse visibility plot.[[Image:OrreryLunarEclipseMapKey.png|thumb|200px|alt=Lunar Eclipse Visibility Plot|Lunar Eclipse Visibility Plot]] | At the bottom of the eclipse display page a map is presented showing the portions of the earth which can see the eclipse. The observer's location is indicated with a red dot, and the map itself is centered at the longitude of the observer. The light blue dot shows the position on the earth for which the moon is at the zenith at the moment of maximum eclipse. The light blue line shows the longitude for which the moon is on the [[:wikipedia:Meridian_(astronomy)|meridian]] at the moment of maximum eclipse. The darkest grey region shows the portion of the earth for which none of the eclipse can be seen. Observers in the white region can see at least some portion of the maximum phase of the eclipse. In other words, if the eclipse is total, an observer in the white region sees at least some part of the total phase of the eclipse. If the eclipse is partial, an observer in the white region sees a partial eclipse. Other shades of grey are used for regions that, for example, can only see the partial phases of a total eclipse. The next image to the right indicates the meaning of the various shaded regions and lines on this eclipse visibility plot.[[Image:OrreryLunarEclipseMapKey.png|thumb|200px|alt=Lunar Eclipse Visibility Plot|Lunar Eclipse Visibility Plot]] | ||
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=== Displayed Items === | === Displayed Items === |
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