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i12 twilight flat |
Combined ALFOSC i(#12)-band twilight flat with
cuts set to +-14% of the median level.
This is a median of 28 twilight flats from 06-06-2009 to
14-10-2009, with the median
count level between 15k and 23k ADUs.
Individual frames have been de-biased.
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R#76 twilight flat |
Combined ALFOSC R(#76)-band twilight flat with
cuts set to +-10% of the median level.
This is a median of 31 twilight flats from 08-07-2009 to
16-10-2009, with the median
count level between 15k and 21k ADUs.
Individual frames have been de-biased.
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 |
V#75 twilight flat |
Combined ALFOSC V(#75)-band twilight flat with
cuts set to +-7% of the median level.
This is a median of 30 twilight flats from 12-04-2009 to
21-10-2009, with the median
count level between 16k and 21k ADUs.
Individual frames have been de-biased.
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B#74 twilight flat |
Combined ALFOSC B(#74)-band twilight flat with
cuts set to +-6% of the median level.
This is a median of 22 twilight flats from 10-04-2009 to
13-11-2009, with the median
count level between 15k and 20k ADUs.
Individual frames have been de-biased.
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