In-flight Performance and Calibration of hte Chandra High Resolution Camera Spectroscopic Readout (HRC-S)

摘要

The High Resolution Camera (HRC) is one of two focal plane instruments on the NASA Chandra X-ray Observatory (CXO) which was successfully launched on July 23, 1999. The Chandra X-ray Observatory was designed to perform high resolution spectroscopy and imaging in the X-ray band of 0.07 to 10 keV. The HRC instrument consists of two detectors, HRC-I for imaging and HrC-S for spectroscopy. Each HRC detector consists of a thin alumnized polymide blocking filter, a chevron pair of microchannel plates (MCPs) and a crossed grid charge readout. The HRC-I is an approx 100 x 100 mm detector optimized for high resolution imaging and timing, the HRC-S is an approx 20 x 300 mm detector optimized to function as the readout for the Low Energy Transmission Grating (LETG). In this paper we discuss the in-flight performance of the hRC-S, and present preliminary analysis of flight calibration data and compare it with the results of the ground calibration and pre-flight predictions. In particular we will compare ground data and in-flight data on detector background, quantum efficiency, spatial resolution, pulse height resolution, and point spread response function.