Flats: Sbc Data from Thermal Vacuum Testing
نویسندگان
چکیده
The Advanced Camera for Surveys (ACS) has three detectors: a large and a small format CCD (WFC and HRC), and a 1024x1024 MAMA Solar Blind Channel (SBC). During the Thermal Vacuum testing at GSFC in 1999 March, flats with S/N=100 per pixel were obtained for the six SBC filters and two prisms. The pixel-to-pixel P-flats are independent of wavelength to <1%. Because of a temperature dependence in the structure of the flats, the use of these flats to reduce flight data may cause a residual Moire pattern with an amplitude of a few percent in the worst region of the SBC.
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