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AORKEY = 4625152
PI = Giovanni Fazio
PROGID = 79
PROTITLE = Proto-Clusters Around High-Redshift Radio Galaxies
OBJECT = 4C41.17-85
PKUPACCU = Moderate
PKUPFILT = RED
PKUPFLUX = 1.00000
PKUPXTND = 0
PTGDIFF (ACQ) = 23.400444
PTGDIFF (SS) = 166.33792
ACQ XC = 9141
ACQ YC = 7203
SS XC = 9989
SS YC = 7124
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EXPLANATION
Intended source is very faint. A different, marginally brighter source in the field
was selected by the onboard PU and moved to the slit. We note that the value of PTGDIFF
for the ACQ is anomalously large. We are investigating the source of this effect, but
it is only in reconstructed pointing not real telescope moves; thus the value of PTGDIFF
is not related to the PU false positive.