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Re: convert to pixel to RA and DEC in degrees? [message #49583 is a reply to message #49581]

Wed, 02 August 2006 09:50

adisn123
Messages: 44
Registered: July 2006

Member

Forgot one more thing.

When applying "xyad" procedure to convert pixel coordinates to RA and
DEC,
the North direction of RA and DEC coords should align with the North
direction of pixel coords?

If it is, then the image should be rotated in such a way that its North
in RA and DEC should
match with the North of pixel coords. I took a look at the image 's
header to look for how many degrees I should rotate such that they
align perfectly each other, but I can't find anything relevant to the
rotation degrees.

adisn123@yahoo.com wrote:
> Does anyone know a procedure which does converting job from pixel
> coordinates to RA and DEC in degrees using the image's fits header?
>
> I know there is xyad procedure in IDL library, but I want my result
> goes up to double precision.
>
> Is there any better one than xyad?
>
> Thanks.

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[Message index]

		Re: convert to pixel to RA and DEC in degrees? By: adisn123 on Thu, 03 August 2006 09:45
		Re: convert to pixel to RA and DEC in degrees? By: Craig Markwardt on Thu, 03 August 2006 07:12
		Re: convert to pixel to RA and DEC in degrees? By: Wayne Landsman on Wed, 02 August 2006 09:57
		Re: convert to pixel to RA and DEC in degrees? By: adisn123 on Wed, 02 August 2006 09:50

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