GHRS Cycle 2 Sensitivity Monitoring Program 4124

Details GHRS Cycle 2 Sensitivity Monitoring Program 4124 GHRS Cycle 2 Sensitivity Monitoring Program 4124

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ghrs.rept...60s&link_type=abstract

GHRS Instrument Science Report 060, 8 pages

Computer Science

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

Scientific paper

The GHRS observed the ultraviolet standard star u Col in late September 1993 (Cycle 3) as part of a delayed Cycle 2 calibration program. A comparison of those observations to spectra of the same star obtained about a year earlier show that the sensitivity of the GHRS has been stable to within better than 1%. The fluctuations about unity of ratios of measurements obtained at different times indicate that a single observation of a star in the LSA has an uncertainty in its flux due to mirror centering errors of about 1.0 %. This value applies to pre-COSTAR observations.

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