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145#
发表于 2007-10-28 20:10
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Yoshida的观测情况：
2007 Oct. 24 (1 comet)
13:14 UT
I confirmed the unbelievable super outburst of 17P/Holmes beside Tsurumi River in Yokohama City, Kanagawa, Japan! It is visible with naked eyes in a large city!
15:12 UT
17P/Holmes is brightening furthermore within two hours. It is about to be a 2-mag object soon!
It looks completely stellar. It looks evidently yellow, very different from a whilte color star delta Per. It seems strange that the comet is yellow, which causes as if it were a nova, not a comet.
17:08 UT
17P/Holmes got brighter furthermore! Perseus does not look "Perseus" familiar to us due to the bright stellar object now.
19:13 UT
17P/Holmes seems to have reached to the maximum. It kept the same brightness during last two hours. The rapid brightening seems to have stopped.
17P/Holmes
13:14 UT 3.7 mag DC 9 (10x66 monocular 10x)
13:17 UT 3.5 mag DC 9 (naked eye)
15:12 UT 3.2 mag DC 9 (10x66 monocular 10x)
15:14 UT 3.0 mag DC 9 (naked eye)
17:08 UT 2.9 mag DC 9 (10x66 monocular 10x)
17:10 UT 2.8 mag DC 9 (naked eye)
19:13 UT 2.9 mag DC 9 (10x66 monocular 10x)
19:15 UT 2.8 mag DC 9 (naked eye)
2007 Oct. 27 (1 comet)
I observed 17P/Holmes on Oct. 27 beside Tsurumi River in Yokohama City, Kanagawa, Japan.
Typhoon has gone, and we could suddenly have a fine night as the weather forecast said. The sky is clear and stars are visible well, despite the full moon. I could finally see Comet 17P/Holmes since the outburst night.
17P/Holmes
2.7 mag Dia. 3.5' DC D2 (10x66 monocular 10x)
2.5 mag DC 9 (naked eye)
Comet 17P/Holmes still looks almost stellar with naked eyes. It is rather orange now. It got evidently brighter than Oct. 24. I could find the comet itself before recognizing the Perseus constellation.
Using a 10x66 monocular, I immediately found a strange round ball-like object, like a planetary nebula or an out-of-focus star. Now it is not sharp at all, although it was completely stellar and strongly sharp on Oct. 24. The color is similar to Jupiter or Saturn. But the rim of the comet is much more blurred than those planets. So it does not look like a planet.
2007 Oct. 28 (1 comet)
I observed 17P/Holmes on Oct. 28 beside Tsurumi River in Yokohama City, Kanagawa, Japan.
It was fine with no clouds all through the daytime today. The weather forecast says it will be cloudy, then rainy, tonight. Thin clouds came over the sky in the evening. But now clouds have gone, and the weather is fine.
17P/Holmes
2.4 mag Dia. 5' DC 6 (10x66 monocular 10x)
2.4 mag DC 9 (naked eye)
Comet 17P/Holmes looked flat last night, but it looks more cometary tonight. A tiny dense spot is visible at the center, surrounded with a circle coma. Now it is getting large, so the total magnitude seems to be getting slightly brighter.
It still looks stellar with naked eyes. |
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但我没“55555”……