Write PSF photometry docs #43

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1. cdeil

   added this to the 0.1 milestone on May 14, 2014
2. cdeil

   added

   docs

   on May 14, 2014
3. astrofrog

   added

   psf

   on May 17, 2014
4. cdeil

   assigned

   bsipocz

   on May 19, 2014
5. cdeil commented on Jun 4, 2014

   

   cdeil

   on Jun 4, 2014

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   @adonath Can you please make a pull request with the IPython notebook and input data files used at https://github.com/astropy/photutils-datasets ?

   I think the Spitzer FITS image is > 100 MB ... could you please cut out a small part (say 1 to 5 MB) and use that as input for the Notebook instead?

   ftcopy can cut out parts of images and adjusts the FITS header correctly.
6. cdeil commented on Jun 17, 2014

   

   cdeil

   on Jun 17, 2014

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   @adonath has put an updated version of the Spitzer PSF photometry example notebook in photutils-datasets (see here) so that everyone can easily improve it.

   There's still a few things that should be checked / improved, namely the reference source catalog positions seem to be incorrect and currently the notebook contains this:

   # It seems that the coordinates are shifted. To have the PRF images properly aligned in the plot below, we correct for this.
   coords.T[0] += 0.18
   coords.T[1] += 0.3
   

   @stargaser You mentioned at https://github.com/astropy/photutils/wiki/Example-Datasets that you might be interested in helping make an example with correct results for Spitzer data ... feel free to correct this example or to change the example image and reference catalog to one with correct results.

   More interesting would be to download a Spitzer image from one of the large programs. I'd like the examples to include use of photutils on a calibrated image in MJy/sr or Jy/pixel units and show how to get proper units out.
7. cdeil

   modified the milestones: 0.1, 0.2 on Aug 4, 2014
8. larrybradley

   removed this from the 0.2 milestone on Apr 29, 2015
9. eteq commented on Feb 19, 2016

   

   eteq

   on Feb 19, 2016

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   The specific discussion here is outdated due to the #159 changes, so I'm opening a new issue for this.
10. eteq

    closed this as completedon Feb 19, 2016