AT 2021gmj Photometry

Type II SN in NGC 3310 in UMa. Astrometrica photometry reports V = 15.77 ± 0.05, although correct PSF fit is a little difficult.

Observatory:  New Mexico Skies at Mayhill, New Mexico – MPC H06
Telescope:  0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer
CCD:  FLI ProLine PL11002M CCD camera

Filter is Astrodon V.