Spectroscopic Sensitivity Workout: First-order modes

Details Spectroscopic Sensitivity Workout: First-order modes Spectroscopic Sensitivity Workout: First-order modes

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop10039b&link_type=abstract

HST Proposal ID #10039

Computer Science

Hst Proposal Id #10039

Scientific paper

We will observe the primary flux standards G191B2B, GD71 and GD153, obtaining first-order spectra in all L-modes {G191B2B only in the CCD modes due to its high brightness in the UV}. By comparing observed and model spectra, we will update calibration reference files describing spectroscopic sensitivity {and CTE loss} as a function of time. On visit of GD71 will be spent on verifying the recently derived CTE formula for STIS Spectroscopic modes with the CCD, by stepping the target along the slit {7 positions} with two {short} exposure times. This will verify the results using the two-amplifier readout method, and provide high-S/N data at low intensity levels and low background level.

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