File:Cassiopeia A First Light (Chandra).jpg

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DescriptionCassiopeia A First Light (Chandra).jpg	English: Chandra's first light image of the Cas A supernova remnant Magyar: A Chandra űrtávcső első felvétele a Cas A szupernóva maradványairól
Date	19 August 1999
Source	http://chandra.harvard.edu/photo/1999/0237/
Author	NASA/CXC/SAO

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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.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:14, 14 June 2014		2,100 × 2,100 (375 KB)	Regasterios	{{Information \|Description ={{en\|1=Chandra's first light image of the Cas A supernova remnant}} {{hu\|1=A Chandra űrtávcső első felvétele a Cas A szupernóva maradványairól}} \|Source =http://chandra.harvard.edu/photo/1999/0237/ \|Author...

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Cassiopeia A

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- Chandra űrtávcső
Usage on ja.wikipedia.org
- カシオペヤ座A
Usage on nl.wikipedia.org
- Hemellichaam

Metadata

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Image title	This X-ray image of the Cassiopeia A (Cas A) supernova remnant is the official first light image of the Chandra X-ray Observatory. The 5,000 second image was made with the Advanced CCD Imaging Spectrometer (ACIS). Two shock waves are visible: a fast outer shock and a slower inner shock. The inner shock wave is believed to be due to the collision of the ejecta from the supernova explosion with a circumstellar shell of material, heating it to a temperature of ten million degrees Celsius. The outer shock wave is analogous to an awesome sonic boom resulting from this collision. The bright object near the center may be the long sought neutron star or black hole that remained after the explosion that produced Cas A.
Author	Chandra X-ray Observatory Center
Width	2,100 px
Height	2,100 px
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	4
Number of rows per strip	31
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS3 Macintosh
File change date and time	01:08, 5 March 2008

File:Cassiopeia A First Light (Chandra).jpg

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19 August 1999

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