[AstroPy] Astropy WCS question

[Perry Greenfield]

I think the answer depends on distortion model you are using, but all_pix2world is probably what you want if your distortion model is one that they mention.

Perry


On Jul 21, 2014, at 3:35 PM, Brian York wrote:

> Greetings,
> 
> My apologies if this has already been asked, but I did not have terribly
> good luck in searching the list archives. I'm currently working on some
> image simulation, and think that astropy.wcs might be useful to me, but
> I'm not sufficiently knowledgeable about WCS systems (or, for that matter,
> about astropy) to be sure.
> 
> I have a list of sources, each with an RA, DEC, and intensity (in
> counts/s), and I have a FITS header representing my output image, with WCS
> and SIP coefficients. I know that wcs_world2pix would give me pixel
> co-ordinates in the absence of distortion, but I'm wondering if there's
> some combination of calls that can convert from (RA,DEC) to (X,Y) with the
> distortion information that I have available?
> 
> Thanks,
> 	-Brian York
> 
> 
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