Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hstc.work...84c&link_type=abstract
The 1997 HST Calibration Workshop with a New Generation of Instruments, p. 84
Astronomy and Astrophysics
Astronomy
Hubble Space Telescope, Charge Coupled Devices, Point Spread Functions, Stellar Models, Coronagraphs, Image Processing, Spectrographs, Disks, Scattering, Diffraction, Spectra, Astronomical Photography, Broadband
Scientific paper
Detailed understanding of the properties of the point-spread function (PSF) of Space Telescope Imaging Spectrograph (STIS) imaging modes is necessary to separate real effects of geometrically complex astronomical sources, such as protoplanetary disks surrounding bright stars, from instrumental effects, such as scattering and diffraction. In order to investigate STIS imaging properties we have numerically simulated broadband stellar PSFs generated by STIS in CCD clear imaging mode, including the effects of the Lyot stop and the coronagraphic wedges. The input spectrum is a stellar model atmosphere of the appropriate spectral type, convolved with the pre-flight STIS CCD response function. The PSF modeler generates broadband PSFs by co-adding weighted monochromatic PSFs across the waveband.
Cornett Robert H.
Ftaclas Chris
Grusczak Anthony
Heap Sally R.
Woodgate Bruce E.
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