This page presents revised calculations of the aperture corrections published in
Sirianni et al. (2005, hereafter S05). Tabled corrections on this page are from
Bohlin's ISR-II (2011)
and ISR-IV (2012).
Table 1
Encircled Energy fractions for K type and hotter stars
in 0.5" and 1.0" apertures.
|
Table 2
Encircled Energy within 0.5" for very cool stars as a function of spectral type. The recommended
values are flagged with an asterisk. For spectral type + filter combinations with no asterisk,
use the hot star values in column 2, which are copied from Table 1.
|
Table 3
As for Table 2, except that the Encircled Energy fractions are for a 1.0" aperture.
|
Table of WFC Encircled Energy corrections from
S05.
Table of HRC Encircled Energy corrections from
S05.
REFERENCES
Bohlin, R. C. 2011,
Instrument Science Report, ACS 2011-02, (Baltimore:STScI)(ISR-II)
Bohlin, R. C. 2012,
Instrument Science Report, ACS 2012-01, (Baltimore:STScI)(ISR-IV)
Sirianni, M., et
al. 2005, PASP, 117, 1049S (S05)
Last modified on May 11, 2012.
