The following images were taken as part of the PSF program (4788) or else in the absolute sensitivity program (4787). All images can be found in the subdirectory f96/foc+costar/. All PSF stars are centered relatively well in the field of view. In every case, the target is BPM16274. The format indicators follow this rule:
"n" refers to normal pixels, "z" to zoomed pixels.
The format indicator is made up of 2 numbers that give you the size of the format in pixels, with x first and y second. If the format is nij, then the size of the image is 1024*2**-i by 1024*2**-j. So if i is 1 and j is 1 (i.e. n11 format), the expanded format is 1024*2^-1 (=512) by 1024*2^-1 (=512). The following are possible formats:
Mnemonic Format
z10 512X1024(Z)
z11 512X512(Z)
z20 256X1024(Z)
n10 512X1024
n11 512X512
n22 256X256
n33 128X128
n20 256X1024
Image Filters Exp Time Prop Format Comments
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F120Ma.hhh F120M 596 4787 z10 Overflowed & saturated
F140M.hhh F140M+F2ND 896 4787 n11 Near reseau mark
F170M.hhh F170M+F4ND 896 4787 n11 Near reseau mark
F210M.hhh F210M+F4ND 896 4787 n11 Near reseau mark
F307M.hhh F307M+F4ND 896 4787 n11
F410M.hhh F410M+F4ND 896 4787 n11
F501Na.hhh F501N+F1ND 896 4787 n11 Filter artifact: ghost @ [-68,-12]
pixels from center of PSF
F550M.hhh F550M+F1ND 896 4787 n11 Near reseau mark
F120Mb.hhh F120M 596 4788 z10 Overflowed & saturated
F120Mc.hhh F120M 896 4788 n22 "Jet"
F152M.hhh F152M+F2ND 896 4788 n22 "Jet"
F220W.hhh F220W+F4ND+F1ND 896 4788 n22 "Jet"
F342W.hhh F342W+F6ND 896 4788 n22
F372M.hhh F372M+F4ND+F1ND 896 4788 n22 Strong artifact - bar through PSF,
45 degrees to spider
F430W.hhh F430W+F4ND+F1ND 896 4788 n22
F486N.hhh F486N 896 4788 n22
F480LP.hhh F480LP+F2ND+F1ND 896 4788 n22
F501Nb.hhh F501N+F1ND 896 4788 n22 Ghost
F320W.hhh F320W+F6ND 496 5517 n22 filter-shift,degraded
There are more PSFs for the F486N filter that were taken as part of the alignment program or else as a probe of field effects, users should contact STScI for more information.
The PSF for the F320W filter reflects the problems arising from its severe filter-induced image shift. This filter shift moves the PSF to the edge of the 256x256 field of view and induces the aberrations seen in this PSF.