rfinn / HalphaImaging

0 stars 2 forks source link

uat_measure_ellip_phot.py --> ellipse sizes #16

Closed gammaspire closed 6 years ago

gammaspire commented 6 years ago

For a given galaxy, the ellipse sizes for H-alpha and r-band cutouts often differ, making for inaccurate (and unsightly) radial profiles.

rfinn commented 6 years ago

this is because the ellipse size is scaled from what sextractor measures as R90. This will be different for the R and Halpha images. We should discuss with others, but I think this is ok as it is for now.