ACS WFC & HRC fielddependent PSF variations due to optical and charge diffusion effects

Details ACS WFC & HRC fielddependent PSF variations due to optical and charge diffusion effects ACS WFC & HRC fielddependent PSF variations due to optical and charge diffusion effects

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003acs..rept....6k&link_type=abstract

Instrument Science Report ACS 2003-06, 26 pages

Computer Science

Hubble Space Telescope, Hst, Space Telescope Science Institute, Advanced Camera For Surveys, Acs, Stsci

Scientific paper

The ACS point spread function remains fairly stable over its field of
view, compared to the PSFs in WFPC2 or STIS. However, ACS/WFC PSF core
width and ellipticity variations are large enough to be of concern to
those undertaking very small aperture photometry or measuring small,
bright-nucleus galaxy ellipticities.

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