Above is an image of a Chandra Low Energy Transmission Grating (LETG) spectrum of a very bright X-ray source, the nova XTE J1118+480, showing only the shortest wavelengths. The major features are:

My primary job is to:

I also conduct my own research, often using Chandra data, mostly on solar wind charge exchange and stellar coronae. My graduate school research was on X-ray atomic physics using an Electron Beam Ion Trap (EBIT). After that I was hired by SAO to help build the system used to collect Chandra pre-flight ground calibration data (the HXDS) and then analyze those data. After launch I switched over to the CXC Calibration group to work on the LETG.