Instrument Science Report 2008-01:

Flat Fields from the Moonlit Earth

R. C. Bohlin, J. Mack, and J. Biretta

February 4, 2008

Abstract:

The Earth illuminated by light from the full Moon was observed for 12 orbits in the F606W and F814W filters. Most of the exposures are nearly streak free and can be combined to make high signal to noise flat fields that should be appropriate for pipeline data processing. The results show a low frequency L-flat deviation of <1% from the current pipeline flat. A few new cosmetic blemishes are revealed; but any changes in the P-flats are best derived by analyzing images from the on-going monitoring programs with the internal lamps.

The Complete Paper (PDF 0.76 MB) is available.