Imaging characteristics of the Extreme Ultraviolet Explorer microchannel plate detectors

Details Imaging characteristics of the Extreme Ultraviolet Explorer microchannel plate detectors Imaging characteristics of the Extreme Ultraviolet Explorer microchannel plate detectors

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989itns...36..881v&link_type=abstract

(IEEE, DOE, NIST, et al., 1988 Nuclear Science Symposium, Orlando, FL, Nov. 9-11, 1988) IEEE Transactions on Nuclear Science (IS

Astronomy and Astrophysics

Astronomy

14

Extreme Ultraviolet Explorer Satellite, Microchannel Plates, Signal Distortion, Grazing Incidence Telescopes, Image Enhancement, Photometers, Sky Surveys (Astronomy)

Scientific paper

The Extreme Ultraviolet Explorer (EUVE) satellite will conduct an all-sky survey over the wavelength range from 70 A to 760 A using four grazing-incidence telescopes and seven microchannel-plate (MCP) detectors. The imaging photon-counting MCP detectors have active areas of 19.6 cm2. Photon arrival position is determined using a wedge-and-strip anode and associated pulse-encoding electronics. The imaging characteristics of the EUVE flight detectors are presented including image distortion, flat-field response, and spatial differential nonlinearity. Also included is a detailed discussion of image distortions due to the detector mechanical assembly, the wedge-and-strip anode, and the electronics. Model predictions of these distortions are compared to preflight calibration images which show distortions less than 1.3 percent rms of the detector diameter of 50 mm before correction. The plans for correcting these residual detector image distortions to less than 0.1 percent rms are also presented.

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