2019y1 20200128 mmattiazzo

I’ve attached an image of C/2019 Y1 ATLAS taken on 2020 Jan 28 at 11:05UT.

Using a Canon 60Da + Sigma 200mm lens. 4 min. FOV 1deg. North right. Altitude 10 degrees.

Green channel photometric V mag = 13.8 (nucleus).

Comet was too close to a mag 12.6 star to perform large aperture photometry but nucleus appears more intense than on an image taken on Jan 23.

Total magnitude is about 12.5 with a coma 2’ wide.