0015071488



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AORKEY = 15071488

PI = Lei Hao
PROGID = 20741
PROTITLE = The mid-IR spectroscopy of the SDSS AGN
OBJECT = 22
PKUPACCU = High
PKUPFILT = BLUE
PKUPFLUX = 15.0000
PKUPXTND = 0
PTGDIFF (ACQ) = 0.095281139
PTGDIFF (SS) = 0.076346271
ACQ XC = 0
ACQ YC = 0
SS XC = 11098
SS YC = 3820

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EXPLANATION

The source is too faint compared to the predicted flux to be detected by the algorithm. As a result, the ACQ generated a no-centroid failure and then the SS selected a rogue pixel instead of staying at the aim point.