Chandra observation of the supernova remnant G272.2-3.2

I created this image after reading Phil Plait's article on the XMM observation. Two Chandra ACIS-I observations of G272.2-3.2 (42.2 and 23.1 ks in length), were taken 2008/08/26 and 2008/08/27. The two datasets were reprocessed using CIAO 4.4.1 and CALDB 4.5.1 on 2012/09/24 and the data combined to make this image, where each channel (band) has been divided by the exposure map for that band. The red channel contains 0.5 to 1.2 keV emission, with an exposure map evaluated at 0.92 keV. The green channel contains 1.2 to 2.0 keV emission, with an exposure map evaluated at 1.56 keV. The blue channel contains 2.0 to 7.0 keV emission, with an exposure map evaluated at 2.3 keV. Noe of the data has been background subtracted. It has however been heavily smoothed before display (using a gaussian with a sigma of 7 arcseconds, which is significantly larger than the Chandra PSF). The faint cross shape which appears to cut the square into 4 smaller squares shows the edges of the 4 individual CCD chips that form the ACIS-I array. The energy bands were chosen to match those used to create the Chandra Source Catalog, version 1.1, rather than pick out significant energy ranges for the ejecta (e.g. Silicon or Iron lines). References: CALDB: http://cxc.harvard.edu/caldb/ CIAO: http://cxc.harvard.edu/ciao/ Chandra Science Catalog (CSC): http://cxc.harvard.edu/csc/ Proposal abstract: http://adsabs.harvard.edu/abs/2007cxo..prop.2412G Observation information and data: Go to the Chandra on-line archive Enter the string 09500026 into the box on the right of the page with the label "Proposal Number" and hit return or the Search button. From there you can view information about the two observations or download the data. The raw data used to create this image is available form the link below.