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| Joint Astronomy Centre |
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From project U/04A/26: S. B. Howell et al. Typical Standard Star dataStandard star single frame (the star is visible if you know where to look)  Standard star - one pair subtracted  Standard star group frame (stretch set to 100 or 99%)  Typical Target Frames (this is on Target 37, which is fairly bright)One frame (no sky subtraction)  One sky subtracted pair (you get this after each pair is taken). The trained eye can spot the target even here (as a faint vertical plus/minus pair just down and left of centre); note that for many of these objects this will not be possible and you'll have to wait for the mosaic (some are faint even then).  Target group frame (in Gaia, after three nod-8 jitters). The target is the plus-minus (vertical) pair to the left of the frame. The blob in upper centre is an array artifact.  AJA, 20031012 |