using colbias
Mike Fitzpatrick wrote on Nov 30, 2009
hi,
i'm an IRAF beginner and currently going through the exercises tutorial. my problem is : why do we fit a chebyshev function of order 1in the "colbias" section? why not a legendre or spline? is it because we are using an averge?
please help............
Amal Mirando
[Mod Note: Forwarded from 'Submissions' link]
i'm an IRAF beginner and currently going through the exercises tutorial. my problem is : why do we fit a chebyshev function of order 1in the "colbias" section? why not a legendre or spline? is it because we are using an averge?
please help............
Amal Mirando
[Mod Note: Forwarded from 'Submissions' link]
Mike Fitzpatrick wrote on Nov 30, 2009
Yes, the intent is to subtract the average of the bias region.
Last post on Nov 30, 2009