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AORKEY = 14972672
PI = Jeroen Bouwman
PROGID = 20691
PROTITLE = The evolution of circumstellar disks as traced by coeval stellar clu
OBJECT = TWA21
PKUPACCU = High
PKUPFILT = BLUE
PKUPFLUX = 101.400
PKUPXTND = 0
PTGDIFF (ACQ) = 0.028832784
PTGDIFF (SS) = 38.175997
ACQ XC = 10090
ACQ YC = 1002
SS XC = 10809
SS YC = 2798
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EXPLANATION
A brighter object in the field was selected by ACQ and moved to the SS and then the slit.