Observation: AT2018gfc

AT2018gfc, Type Blazar (aka CSS111018:023752+284809, also 4C 28.07?)
Discovered 2018-09-09.986 by Gaia, mag 15.36 at discovery
R.A. = 02h37m52s.409, Decl. = +28°48’09”.00

Observer: Cedric Raguenaud, SW France, GSNST
20180915.125
Approx mag 14.84CV ±0.00, ZP=29.218mag
Note: quasar 4C 28.07 is reported at mag 18.5V.
0.25m/f4 reflector + CCMOS, 0.5″/pixel
6x300s, bin 1×1

Observation: AT2018ggb

AT2018ggb, Type unknown
Discovered 2018-09-05.185 by ZTF, mag 17.92 at discovery
R.A. = 19h39m04s.330, Decl. = +41°53’10”.03

Observer: Cedric Raguenaud, SW France, GSNST
2018-09-14.884
Approx mag 18.70CV ±0.02, ZP=29.185mag
0.25m/f4 reflector + CCMOS, 0.5″/pixel
6x300s, bin 1×1

Observation: AT2018ggf

AT2018ggf, Type unknown
Discovered 2018-09-09.344 by ZTF, mag 18.55 at discovery
R.A. = 22h15m02s.600, Decl. = +42°08’36”.45

Observer: Cedric Raguenaud, SW France, GSNST
2018-09-15.187
Approx mag 19.29CV ±0.08, ZP=28.728mag
0.25m/f4 reflector + CCMOS, 0.5″/pixel
6x300s, bin 1×1

Observation: AT2018ggy

AT2018ggy, Type unknown in LEDA 2817362
Discovered 2018-09-09.301 by ZTF, mag 18.73 at discovery
R.A. = 23h26m01s.300, Decl. = +38°08’46”.85

Observer: Cedric Raguenaud, SW France, GSNST
2018-09-15.073
Approx mag 16.21CV ±0.01, ZP=29.206
0.25m/f4 reflector + CCMOS, 0.5″/pixel
6x300s, bin 1×1

The coordinates provided by ZTF are the core of the host galaxy. The magnitude measured is that of the galaxy since nothing else is visible.

Observation: AT2018gfn

AT2018gfn, Type CV (aka CRTS J015321.5+340857)
Discovered 2018-09-09.478 by Gaia, mag 16.81 at discovery
R.A. = 01h53m21s.492, Decl. = +34°08’56”.19

Observer: Cedric Raguenaud, SW France, GSNST
2018-09-15.101
Approx mag 19.71CV ±0.03, ZP=29.251
0.25m/f4 reflector + CCMOS, 0.5″/pixel
6x300s, bin 1×1