2016 Jan. 9 (9 comets)
I observed 9 comets visually on Jan. 9 in Mt. Hanadate, Ibaraki,
The weather was completely fine with no clouds in the evening and in
the morning. But it was cloudy around mid night, with slight snow.
The sky was not so clear. I could not see the Milky Way.
In the morning eastern sky, Venus and Saturn encounters very close.
I also tried to observe 22P and 10P. But 22P was not visible due to
the bright background low sky. 10P was not visible because too close
to 12-mag and 13-mag stars.
7.0 mag Dia. 11' DC 6 Tail 24' (p.a. 185 deg) (40.0-cm reflector 36x)
6.4 mag Dia. 17' DC 6 (10x70 monocular)
Very bright and large. It looks fan shaped.
8.6 mag Dia. 7' DC 6 (40.0-cm reflector 36x)
Very bright and large.
10.0 mag Dia. 2.5' DC 7 (40.0-cm reflector 75x)
Sharp central condensation. It looks small, probably
because it located near by a 7-mag star.
12.4 mag Dia. 0.9' DC 3-4 (40.0-cm reflector 144x)
More difficult to see than expected.
fainter than 14.0 mag Dia. 0.5' (40.0-cm reflector 257x)
12.7 mag Dia. 1.3' DC 0 (40.0-cm reflector 144x)
Completely diffuse with no central condensation.
13.3 mag Dia. 0.7' DC 3 (40.0-cm reflector 257x)
Also visible with 144x magnification.
13.9 mag Dia. 0.6' DC 4 (40.0-cm reflector 257x)
I could see it in a very short time because clouds covered the sky.
fainter than 13.0 mag Dia. 0.4' (40.0-cm reflector 257x)