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Hubble Space Telescope
WFPC2 TIR Abstract

WFPC2 Technical Instrument Report 97-04:

VISFLAT Channel Monitoring


The whole dataset of VISFLAT exposures in F555W is re-analysed and found to confirm the continuing degradation of the VISFLAT lamp. The new data indicate that the lamp degradation is prehaps more a function of cumulative lamp on-time than number of lamp cycles.

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