Stability of the GHRS Sensitivity During Cycle 4

Details Stability of the GHRS Sensitivity During Cycle 4 Stability of the GHRS Sensitivity During Cycle 4

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ghrs.rept...71l&link_type=abstract

GHRS Instrument Science Report 071, 7 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Ghrs, Goddard High Resolution Spectograph

Scientific paper

The sensitivity of the GHRS on Side 1 and Side 2 was monitored approximately every 3 months during Cycle 4. The measurements were done with the ultraviolet flux standard BD+28D4211. No significant time dependence was found for wavelengths > 1200 A on both sides; any accumulated sensitivity changes during Cycle 4 do not exceed about 2%, although the data indicate a decline rate per year of this magnitude. Below 1200 A the sensitivity decreases with time. In April 1995 the sensitivity at 1140 A was 10% lower than measured in April 1994.

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