More on calibrations
It's amazing how you get 3 images from the same cluster (in that case, 2 of them taken with the same instrument, but with different CCDs - old and new setup), calibrate each independently, compare the magnitudes and you get any sort of result, but the right one ... of course the night were "almost" photometric, but not really ...Now the thing is "lighting a candle" to one of them and go ahead ...
posted by Cris Da Rocha @ 10:48 PM
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