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>> I think this survey may struggle with what
>> probably all surveys struggle with...which is night-to-night variations.
>> ...*average* accuracy might be 0.05 but the scatter...may be
>> pretty high.
You can, of course, test this. You can use either the Landolt or
Cousins E-region standards to test the errors as a function of magnitude,
color, and consistency across the sky. Although it's trickier, you could
use a strictly periodic variable like an RR Lyrae or W UMa star to
look at consistency as a function of phase (i.e. how well the ASAS3 data
reproduce a recently-studied "good" variable).
\Brian
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