1. Chandra x-ray observatory (cxo): overview;Weisskopf,2000
2. The Chandra X-Ray Observatory: progress report and highlights;Weisskopf,2012
3. The axaf ccd imaging spectrometer;Garmire,1992
4. Advanced CCD imaging spectrometer (ACIS) instrument on the Chandra X-ray Observatory;Garmire,2003
5. AXAF High-Resolution Camera (HRC): calibration and recalibration at XRCF and beyond;Murray,1997