17.22 Cycle 28 Calibration Plan

The Cycle 28 calibration plan continues the standard monitoring programs established in previous Cycles, with minor adjustments to improve characterization of the instrument and to meet Cycle 28 GO calibration requirements. Also included are the biennial monitoring of the three primary white dwarf (WD) flux standards and four new special calibration programs: absolute flux measurements for several fainter WD standards (in order to improve cross-calibration with other instruments), an investigation of FUV flux variations at off-nominal detector positions, a more extensive assessment of the flux reproducibility obtainable with STIS spatial scans, and a NUV flat field monitor program to probe the current brightness of the Deuterium lamp (was approved in the middle of Cycle 28).

A detailed summary of the calibration plans can be found on the STIS Calibration web page.