psf photometry value diffierent with sdss FLUX_PSF
Opened this issue · 2 comments
xiaoguaishoubaobao commented
When I tested the value of the Sextractor detection and the comparison of the SDSS FLUX_PSF, I found that the value was almost different
But when I detect the Sextractor detection 1.4 ARCSEC, it will be much better, i fllow this
I don’t know why I just tried to take it
How do I get the same value as SDSS?
Please help me thank you
xiaoguaishoubaobao commented
Can anyone answer my question?
hbouy commented
I am not sure I understand your question. How large is the difference between the SDSS and SExtractor value? What do you mean by "detection 1.4 arcsec"? Do you mean an aperture of 1.4"?
Note that I would expect small differences between the SDSS catalogue and the SExtractor photometry since the algorithms are not exactly the same...