Updated on December 5, 2010
2010 Dec. 4 (8 comets)
I observed 8 comets visually on Dec. 4 in Kita-karuizawa, Gunma, Japan.
After heavy rain and strong wind in Friday, I could have a fine weekend with no clouds.
But unfortunately, the sky was not excellent. I could see very faint stars with higher magnification. However, it was poor to see wide diffuse comets because the background sky became dim with lower magnification.
2010 Nov. 5-6 (9 comets)
I observed 9 comets visually on Nov. 5 and 6 in Kita-karuizawa, Gunma, Japan.
After hearing the discovery by Kaoru Ikeya and Shigeki Murakami, I decided to go comet observing to see the new comet in Kita-karuizawa. Fortunately, I could have fine sky without any clouds at all both nights.
The weather was fine without clouds also in daytime. Red and yellow leaves are shining with sunlight here and there. It was a beautiful sight.
It was warm in daytime, but very cold at night.
I also observed epsilon Aur (Almaaz), now in eclipse after 27 years. It was 3.7 mag on Nov. 5.57. Because the amplitude is small as about 0.8 mag, I had imagined that it is not easy to see the difference. But actually, the impression of Auriga became very different.
2010 Aug. 7 (4 comets)
I observed 4 comets visually on Aug. 7 in Kita-karuizawa, Gunma, Japan.
The weather was fine this weekend. Comfortable stay in high-land, far from the very hot metropolis Tokyo. I enjoyed star watching.
Many clouds existed in day time, and it became completely cloudy in the evening. But then the weather became fine with no clouds. But it was not clear in the low sky. It became foggy temporarily.
The sky kept fine until dawn. But clouds came from the south and covered the whole sky quickly just before the morning glow began. I could observe comets before clouds covered the sky.
I also enjoyed Jupiter with only one band.
2010 May 1-3 (6 comets)
I observed 6 comets visually on May 1, 2 and 3 in Kita-karuizawa, Gunma, Japan.
The weather was fine during a spring holiday week in Japan.
Many bright comets locate in the evening sky, and I enjoyed them before the moon rise. I also enjoyed clusters and nebulae with my 40-cm reflector.
It was very warm in daytime, but it got very cold at night. However, the climate was not humid at all during the three nights. So my observation was comfortable.
On May 1, it was completely fine with no clouds all through the night. On May 2, it was also fine with no clouds, but it became cloudy at dawn. On May 3, it was fine in the evening, but thin clouds came from the south east, then it became cloudy soon.