After further investigation, AT2018fhy is probably 2MASS J00431056+4116574, a possible globular cluster in M31. The fact that it’s made up of many stars, some of variable type RR Lyrae, explains the variations in magnitude we observed. Thanks to Emmanuel Conseil for the information.
Observation: 2018evd
Confirmation: AT2018fhy
I found AT2018fhy already apparent in my archives on 2018-08-06 at mag 17.36CV. It still is at mag 18.39CV.
Observation: SN2017eaw (x3)
SN2017eaw, Type IIP in NGC 6946
Discovered 2017-05-14.238 by Patrick Wiggins, mag 12.8 at discovery
R.A. = 20h34m44s.238, Decl. = +60°11’36”.00
Observer: Cedric Raguenaud, SW France, GSNST
2018-08-22.153
Approx mag 19.03CV ±0.04, ZP=28.779mag
0.25m/f4 + EQ8
QHY183C, 0.5″/pixel
6x300s, bin 1×1
Observer: Cedric Raguenaud, SW France, GSNST
2018-08-26.990
Approx mag 19.16CV ±0.05, ZP=29.421mag
0.25m/f4 + EQ8
QHY183C, 0.5″/pixel
6x300s, bin 1×1
Observer: Cedric Raguenaud, SW France, GSNST
2018-08-28.125
Approx mag 19.19CV ±0.10, ZP=29.282mag
0.25m/f4 + EQ8
QHY183C, 0.5″/pixel
6x300s, bin 1×1
GSNST-2018ac = (AT 2018fhy)
Our GSNST Team member, Malhar R. Kendurkar recently discovered a very short lived nova near the Nucleus of Andromeda Galaxy (M31) at Magnitude V = + 16.29
Reference ATel#11983
http://www.astronomerstelegram.org/?read=11983%20
Reference ATel#11983
http://www.astronomerstelegram.org/?read=11983%20
Kees Scherer also observed this nova and found a possible confirmation.
https://www.flickr.com/photos/snimages/43429368855/
