ACS WFC & HRC fielddependent PSF variations due to optical and charge diffusion effects
Abstract
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.
- Publication:
-
Instrument Science Report ACS 2003-06
- Pub Date:
- June 2003
- Bibcode:
- 2003acs..rept....6K
- Keywords:
-
- Hubble Space Telescope;
- HST;
- Space Telescope Science Institute;
- Advanced Camera for Surveys;
- ACS;
- STScI