File:Messier objects equirectangular plot.svg
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Original file (SVG file, nominally 512 × 320 pixels, file size: 292 KB)
Summary
| Description |
English: Equirectangular plot of declination vs right ascension of the Messier objects relative to the modern constellations, coded by type and apparent visual magnitude, with a dotted line denoting the ecliptic. Note that the right ascension axis increases from right to left to approximate the view of the night sky. Messier object data is from http://messier.seds.org/dataDec.html . Constellation boundaries are derived from ftp://cdsarc.u-strasbg.fr/pub/cats/VI/49/bound_18.dat with Ursa Minor's corrected to reach the north celestial pole. The Milky Way bitmap is from http://svs.gsfc.nasa.gov/vis/a000000/a003500/a003572 (low-res magnitude 5 version). Thanks to Timwi for 4-colouring with each quadripoint having all colours. |
| Source | Own work, http://svs.gsfc.nasa.gov/vis/a000000/a003500/a003572 |
| Author | Cmglee |
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Licensing
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:43, 13 September 2013 | | 512 × 320 (292 KB) | wikimediacommons>Cmglee | Colour-code distance in light years. |
File usage
The following 3 pages use this file:
