First Order LSFs for the Nominal vs. E1 Apertures

Details First Order LSFs for the Nominal vs. E1 Apertures First Order LSFs for the Nominal vs. E1 Apertures

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004stis.rept....2s&link_type=abstract

Instrument Science Report STIS 2004-02, 7 pages

Computer Science

Hubble Space Telescope, Hst, Space Telescope Science Institute, Stis, Space Telescope Imaging Spectrograph

Scientific paper

A calibration program was carried out to determine the spectroscopic LSFs at the pseudo-aperture locations (E1 apertures) for the first order CCD modes. Observations were taken with the narrowest 52X0.05 acrsec slit to minimize the effect of the aperture on the determination of the LSFs. Observations were repeated in the nominal location (close to the middle of the detector) as well as the pseudo (E1) location (close to row 900) of the apertures to facilitate easy comparison of the LSFs at the two locations. Observations of the emission line object V1016-Cyg were used to determine the LSFs in G430L and G750L modes. A comparison of the LSFs at the nominal and the pseudo locations show no measurable difference for all the modes. This suggests that the LSFs determined for the nominal positions of the slits can also be used for the pseudo locations.

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