radial profile ("r") and aperture photometry ("a") failing, but "j" and "k" work

[janerigby]

I am attempting to measure the PSF from stars in an HST WFC3-IR F160W image. For recordkeeping, the image is V4.0_PSZ1G311.65-18.48_F160W_0.03g0.8_cr4.0_0.7_drz_sci.fits
(Please email me and I can send it privately.)

I am getting an error when doing aperture photometry ("a"), and non-sensical answers for radial profile ("r"), as follows:

1. Using "j" makes a nice fit with FWHM=6.4 pix

2. Using "k" makes a nice fit with FWHM=6.2 pix

3. sing "r" makes a fit that looks good: by eye the fwhm is a few pixels, but the fit reports a FWHM=17 pix, which is just ridiculous. I have screenshots I can send; I don't see how to attach them here.

4. Trying to run aperture photometry ("a") fails with the error below.

Please advise. I can send the fits image and the screenshots.
Best,
Jane

AttributeError Traceback (most recent call last)
in
1 import imexam
2 viewer = imexam.connect('ds9')
----> 3 viewer.imexam()

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/imexam/connect.py in imexam(self)
148 self._run_event_imexam()
149 else:
--> 150 self._run_imexam()
151 else:
152 warnings.warn("No valid image loaded in viewer")

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/imexam/connect.py in _run_imexam(self)
263 self._check_slice()
264 self.exam.do_option(
--> 265 x, y, current_key)
266 except KeyError:
267 print(f"Invalid key, use\n: {self.exam.print_options()}")

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/imexam/imexamine.py in do_option(self, x, y, key)
199 self.imexam_option_funcs[key]0
200 else:
--> 201 self.imexam_option_funcs[key][0](x, y, self._data)
202
203 def get_options(self):

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/imexam/imexamine.py in aper_phot(self, x, y, data, genplot, fig, error)
690 cmap=self.aper_phot_pars['cmap'][0])
691
--> 692 apertures.plot(ax=ax, color='green', alpha=0.75, lw=3)
693 if subsky:
694 annulus_apertures.plot(ax=ax, color='red', alpha=0.75, lw=3)

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/photutils/aperture/core.py in plot(self, axes, origin, **kwargs)
566 axes = plt.gca()
567
--> 568 patches = self._to_patch(origin=origin, **kwargs)
569 if self.isscalar:
570 patches = (patches,)

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/photutils/aperture/circle.py in _to_patch(self, origin, **kwargs)
187 for xy_position in xy_positions:
188 patches.append(mpatches.Circle(xy_position, self.r,
--> 189 **patch_kwargs))
190
191 if self.isscalar:

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/matplotlib/patches.py in init(self, xy, radius, **kwargs)
1573 %(Patch_kwdoc)s
1574 """
-> 1575 super().init(xy, radius * 2, radius * 2, **kwargs)
1576 self.radius = radius
1577

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/matplotlib/patches.py in init(self, xy, width, height, angle, **kwargs)
1447 %(Patch_kwdoc)s
1448 """
-> 1449 super().init(**kwargs)
1450
1451 self._center = xy

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/matplotlib/patches.py in init(self, edgecolor, facecolor, color, linewidth, linestyle, antialiased, hatch, fill, capstyle, joinstyle, **kwargs)
106
107 if len(kwargs):
--> 108 self.update(kwargs)
109
110 def get_verts(self):

~/anaconda3/envs/astropy_stable3/lib/python3.7/site-packages/matplotlib/artist.py in update(self, props)
1060 func = getattr(self, f"set_{k}", None)
1061 if not callable(func):
-> 1062 raise AttributeError(f"{type(self).name!r} object "
1063 f"has no property {k!r}")
1064 ret.append(func(v))

AttributeError: 'Circle' object has no property 'ax'

[sosey]

cross-referencing with #165, doh. working on the fix.

[janerigby]

I got iraf's imexam working remotely on a linux box, and verified that the
running "r" on the V4.0 F160W file produces a FWHM of 4.6 pixel, which is sensible.
This is consistent with the behavior seen by others in issue #165