Support of the balloon-borne ultraviolet stellar spectrograph

Details Support of the balloon-borne ultraviolet stellar spectrograph Support of the balloon-borne ultraviolet stellar spectrograph

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986stan.reptt....t&link_type=abstract

Final Report Stanford Univ., CA. Center for Space Science and Astrophysics.

Astronomy and Astrophysics

Astrophysics

Multi-Anode Microchannel Arrays, Radiation Detectors, Stellar Radiation, Ultraviolet Spectrometers, Ultraviolet Telescopes, Balloon-Borne Instruments, Quantum Efficiency, Spectral Resolution, Temperature Effects, Vidicons

Scientific paper

A (256 x 1024)-pixel imaging ultraviolet Multi-mode Microchannel Array (MAMA) detector system for flight was fabricated, evaluated, and environmentally tested for flight on the Balloon Borne Ultraviolet Stellar Spectrograph (BUSS). The goal of the program was to replace the existing SEC Vidicon with the pulse-counting MAMA detector in order to, first, improve the overall sensitivity of the BUSS telescope and spectrograph for observations of stars down to m sub v = 7 and fainter, and, second, to improve the spectral resolution and wavelength accuracy by eliminating the image drifts in the Vidicon caused by magnetic field effects. A sealed MAMA detector tube structure employing a remotely processed photocathode mounted on a window in proximity focus with the front face of the MCP was developed to avoid contamination produced by a noisy and unstable device. The configuration of the BUSS detector system in its flight ready configuration is shown. The quantum efficiency curve for the semi-transparent Cs2Te photocathode is also shown.

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