Deriving HRC-S Degap for Flight Settings

Under Development

Flat Field Data

Flat field illumination of the HRC-S was performed in the HRC lab on 1997 May and June (after the XRCF calibration). During the period June 10-15 the HRC-S was operated with the MCP HV and trigger thresholds set at the levels that are expected to be used on-orbit. The data were captured using the flight electronics and a spacecraft interface simulator that would allow data rates ten times greater than in flight. The raw data files contain records consisting only of packed MCP event data. Only a single segment of the HRC-S could be illuminated at any one time.

The following table lists the HRC-S flat-field illumination data files. The illuminated HRC-S segment is indicated The segements are labeled "+1", "0", and "-1" based on their relative positions in spacecraft coordinates. The +1 segment covers coarse positions 0-63, the "0" segment covers 64-127, and the "-1" segment covers 128-192 (see the HRC focal plane layout).

Raw data fileSegmentX-ray lineX-ray energy
(keV)
p197061012.rd0C-K0.277
p197061016.rd0Al-K1.486
p197061020.rd0O-K0.525
p197061024.rd0B-K0.183
p197061104.rd+1C-K0.277
p197061108.rd+1Al-K1.486
p197061112.rd+1O-K0.525
p197061116.rd+1B-K0.183
p197061204.rd-1C-K0.277
p197061208.rd-1Al-K1.486
p197061212.rd-1O-K0.525
p197061216.rd-1B-K0.183
p197061504.rd0Fe-K6.404
p197061508.rd0Ag-L2.984
p197061512.rd0Ti-K4.511
p197061516.rd0Ni-L0.852


Dr. Michael Juda
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Mail Stop 70
Cambridge, MA 02138, USA
Ph.: (617) 495-7062
Fax: (617) 495-7356
E-mail: mjuda@cfa.harvard.edu