[AstroPy] [IoA] wcs.all_pix2world answering negative RA

Yannick Roehlly yannick.roehlly at gmail.com
Mon Nov 30 10:03:02 EST 2015


Oh yes you're right. I didn't notice. The strange thing is that both Aladin
and DS9 manage to display the image from which this WCS comes with the
correct coordinates.  Is there something they are correcting?

Yannick

2015-11-30 15:36 GMT+01:00 Eduardo Gonzalez <eglez at ast.cam.ac.uk>:

>
>
> On Mon, Nov 30, 2015 at 2:14 PM, Yannick Roehlly <
> yannick.roehlly at gmail.com> wrote:
>
>>
>> Is it expected? Am I missing something?
>>
>>
> CRVAL1  =       -8.13584423065 / [deg] Coordinate value at reference point
>
> The R.A. at the reference point is negative in your WCS.
>
> Cheers,
>
> Eduardo
>
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