Test and evaluation of the space telescope imaging spectrograph (STIS) engineering model units of the MAMA detectors

Details Test and evaluation of the space telescope imaging spectrograph (STIS) engineering model units of the MAMA detectors Test and evaluation of the space telescope imaging spectrograph (STIS) engineering model units of the MAMA detectors

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2282..116j&link_type=abstract

Proc. SPIE Vol. 2282, p. 116-125, Ultraviolet Technology V, Robert E. Huffman; Christos G. Stergis; Eds.

Computer Science

Performance

4

Scientific paper

The space telescope imaging spectrograph (STIS), a next-generation instrument for the Hubble Space Telescope, has fabricated several engineering model units (EMUs) of the multi-anode microchannel array (MAMA) detectors. Good tube yields have been realized in producing these EMUs and some have performances suitable for flight. One of these EMU MAMAs has been operated for substantial periods of time after having undergone both shake and thermal environmental testing. A second will undergo similar environmental tests later this year. An earlier demonstration tube has been used extensively for over a year to evaluate STIS gratings in the Goddard Diffraction Grating Evaluation Facility. The STIS MAMA detectors have now matured to the point where half of the total test and evaluation effort is concerned with the characterization of subtle processes, a level of characterization needed to achieve data with a signal-to-noise ratio in excess of 100. We present test results from these EMUs including detailed analysis of data collected with vacuum chambers specifically designed for the evaluation of these detectors.

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