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Hubble Space Telescope
WFPC2 ISR Abstract

Instrument Science Report 2001-09:

The WFPC2 Photometric CTE Monitor

I. Heyer

October 05, 2001

Abstract:

The Charge Transfer Efficiency of the WFPC2 CCD arrays has been monitored since the instrument's deployment aboard HST in 1993. Since then a significant increase in CTE loss has been observed.

We examine photometric data from 28 April 1994 to 11 February 2001. The CTE loss appears to be growing worse in a linear fashion with time. The results from the latest set of observations show that CTE loss has reached a level of 53% in the worst case scenario.

The Complete Paper is available as PDF (0.39 MB) and PostScript (1.1 MB).