Technical facts about this news release:
| About the Object |
| Object Name: |
Cassiopeia A |
| Object Description: |
Supernova Remnant |
| Position (J2000): |
R.A. 23h 23m 24s
Dec. +58° 48' 54" |
| Constellation: |
Cassiopeia |
| Distance: |
About 10,000 light-years 3,100 parsecs away. |
| Dimensions: |
This image is 8.5 arcminutes (25 light-years or 7.7 parsecs) wide. The bright remnant shell has a diameter of about 4 parsecs (13 light-years). |
|
| About the Data |
| Data Description: |
This image was created from HST data from the following proposals: 9890 and 10286, both by: R. Fesen (Dartmouth College), J. Morse (NASA Goddard Space Flight Center), J. Raymond (Harvard-Smithsonian Center for Astrophysics), R. Chevalier (University of Virginia), and M. Dopita (Australian National University). |
| Instrument: |
ACS/WFC |
| Exposure Date(s): |
March, 2004 and December, 2004 |
| Exposure Time: |
2.3 days |
| Filters: |
F625W (SDSS r), F775W (SDSS i) , and F850LP (SDSS z) |
|
| About the Image |
| Image Credit: |
NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration |
| Release Date: |
August 29, 2006 |
| Colors |
This image is a composite of many separate exposures made by the ACS instrument on the Hubble Space Telescope using several different filters. Three filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
F625W blue
F775W green
F850LP red |
| Orientation/Scale: |
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