feder-observatory / stellarphot

Stellar aperture photometry
https://stellarphot.readthedocs.io
BSD 3-Clause "New" or "Revised" License
4 stars 12 forks source link

`find_center` fails badly if the star is faint #352

Closed mwcraig closed 3 months ago

mwcraig commented 3 months ago

While testing out photometry notebook 01 (seeing profile), I noticed that it sometimes badly mis-estimates the position of the star (see screen cap below). The issue, as far as I can tell, is that the centroid-finding routines in photutils really require a fairly small cutout around the star. New test and fix coming tomorrow.

In the image below the cyan circle should be centered on the faint star -- it clearly is not.

01-viewer-se…__3__-_JupyterLab