WF/PC Instrument Science Report 92-01:
Position Changes for Standard Star Observations
By C. Ritchie
October 03, 1992
Abstract excerpted from the report:
Observations of the photometric standard star BD+75D325 are made monthly with the WF/PC-1. Over time, there has been a shift in star location on the CCDs causing the star center in PC observations to fall near a blocked column despite a PDB aperture change for PC 6 in late June 1992 to prevent this from occurring.
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