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| smp |
01/29/2009 04:12AM (Read 3225 times)
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Status: offline
Registered: 07/27/2008
Posts: 70
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Hi,(1) I have 10 fits images of the [b:2e712c5c94]same [/b:2e712c5c94]field.
(2) Each image contains 3 object stars. Centres of these stars are shifted slightly from image to image.
(3) Let us take 1st image. I want to transform [b:2e712c5c94]each [/b:2e712c5c94]pixel co-ordinates (x,y) in this fits image to (RA,DEC) for that pixel.
(4) And I want to do (3) above for remaining 9 images.
(5) I know that this is done using WCS tools.
(6) But I do not know what are WCS and how this transformation is actually done using IRAF; I mean is there any IRAF task to do this WCS fitting or WCS transformation?
(7) What Should I read first?Thanks
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| jturner |
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01/29/2009 04:12AM
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Status: offline
Registered: 12/29/2005
Posts: 165
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[quote:e7340b034f="smp"](6) But I do not know what are WCS and how this transformation is actually done using IRAF; I mean is there any IRAF task to do this WCS fitting or WCS transformation?
(7) What Should I read first?[/quote:e7340b034f]
Type "help immatch" and then "help <task>" for the tasks listed there.
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Transformation of (x,y) to (RA,DEC) for each pixel
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