Stability of the GHRS Side 1 Sensitivity

Details Stability of the GHRS Side 1 Sensitivity Stability of the GHRS Side 1 Sensitivity

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ghrs.rept...69l&link_type=abstract

GHRS Instrument Science Report 069, 9 pages

Physics

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

Scientific paper

The ultraviolet flux standard BD+28D4211 is observed with the GHRS and grating G140L to monitor the long-term stability of the instrument sensitivity between 1100A and 1640A. Four observations obtained on days 94.098, 94.164, 94.213, and 94.294 are available for the wavelength range 1100A - 1350A. Data for the range 1350A - 1600A are available for days 94.164, 94.213, and 94.294. The GHRS sensitivity between 1175A and 1640A is stable within 1.5%. We find marginal evidence for a sensitivity decrease below 1200A. The decrease is largest at the shortest wavelength observed (~5% at 1125 A) but has little statistical significance due to low counts at these wavelengths.

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