[AstroPy] an image fitting problem

[gonghang.naoc]

Hi everybody,

If a star is in the outskirt of a galaxy,how to estimate its background
reasonably?The final target is to  do photometry correctly.The background
is sort of bright and the star is difficult to be seen visually.
I plan to to remove the region around the star ,then make a local
thin-plate background fitting.
Does anybody have any suggestions?Fitting methods or existing python
scripts ,both are welcome.

Best regards

hang
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