Hsp Instrumental Polarization Test HSP-07

Details Hsp Instrumental Polarization Test HSP-07 Hsp Instrumental Polarization Test HSP-07

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990hst..prop.1386b&link_type=abstract

HST Proposal ID #1386

Astronomy and Astrophysics

Astronomy

Hst Proposal Id #1386

Scientific paper

This proposal defines the procedure for determining the instrumental polarization of the polarimetric IDT (IDT#1, POL) on the HSP. Three (3) unpolarized standard stars wil be observed using various filter-polarizer combinations for three (3) different roll angles (0d, +60d, +120d). Two sets of observations will be taken at +30d and -30d to be followed 60 days later by two more sets of observations at +30d and -30d (for a total range of 120d). These observations will permit the instrumental polarization to be calibrated. The instrumental polarization must be determined to a high precision in order to vectoriallly remove it from HSP polarization observations to determine the actual astronomical polarization. Revision History: Mark H. Slovak 8/30/88 Translated to V2 proposal instructions (RPSS V6.2) S. Laurent 1/20/89 Updated: Sally Laurent 2/24/89, 3/20/89, 4/13/89, 5/12/89 Modified: P. Stanley 1/15/90 - change to use CTA selected targets only; Fixes for aberration problem - SALM 7/30/90;

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