Comet ISON (C/2012 S1)[October 8th 2013 ]
http://skycenter.arizona.edu/sites/skycenter.arizona.edu/files/ison_10082013.jpgOptics 32-inch Schulman Telescope (RCOS)
Camera SBIG STX16803 CCD Camera
Filters Astrodon Gen II
Dates October 8th 2013
Location Mount Lemmon SkyCenter
Exposure RGB = 18:18:16 minutes
Acquisition Astronomer Control Panel (ACP), Maxim DL/CCD (Cyanogen), FlatMan XL (Alnitak)
Processing CCDStack v2 (CCDWare), Photoshop CS5 (Adobe), PixInsight
Credit Line & Copyright Adam Block/Mount Lemmon SkyCenter/University of Arizona
By Alan Boyle, Science Editor, NBC News
It's not at all clear whether Comet ISON will become "the comet of the century," as skywatchers hoped a year ago, but it's certainly become a beautiful sight for photographers with the right kind of telescope.
Adam Block captured a stunner on Tuesday morning, just before sunrise, using the 0.8-meter Schulman Telescope at the University of Arizona's SkyCenter atop Mount Lemmon. Block's picture reveals ISON's greenish coma, trailed by a long, straight tail. The comet is zooming within the orbit of Mars, heading toward a crucial rendezvous with the sun on Nov. 28.
"I am certain more images of this will be coming out shortly as it increases in brightness during its dive toward the sun," Block wrote in an email. "Here is hoping it survives that rendezvous and emerges as something spectacular on the other side! Although its future is questionable ... being prepared is always a sure thing to take advantage of quickly changing conditions."
Austrian astrophotographer Michael Jäger also captured a green-tinted glimpse of the comet.
"ISON's green color comes from the gases surrounding its icy nucleus," SpaceWeather.com's Tony Phillips wrote. "Jets spewing from the comet's core probably contain cyanogen (CN: a poisonous gas found in many comets) and diatomic carbon (C2). Both substances glow green when illuminated by sunlight in the near-vacuum of space."
The comet is still too dim to see with the naked eye, but if you have the right kind of telescope, Phillips says you can see it rising alongside Mars in the eastern sky, just before dawn. SpaceWeather.com provides the coordinates and additional viewing suggestions.
Some astronomers say there's a good chance that ISON will fizzle out. But if it doesn't break apart and survives its 724,000-mile (1.16 million-kilometer) solar encounter, it just might meet Block's expectations. Calling it the comet of the century is probably too presumptuous — but "comet of the year"? Maybe. Stay tuned.
为毛高级模式不能出现传图片的工具栏了？ 英文看不懂啊，照片拍的好 32寸啊，80cm口径哦，实在是……强！ 32寸rc…… lovez3 发表于 2013-10-9 10:42 static/image/common/back.gif
32寸啊，80cm口径哦，实在是……强！
英寸{:soso_e113:}
楼主ID不错 确实不错。 还有20多天，敬请期待！
我来发一个哈勃拍摄的
imaged by Damian Peach on November 6th
http://t.co/symccKkWRo
Here is the latest image from Damian Peach and it shows that ISON’s tail is developing.
尾巴开始扩大了，
TIME
Local Time:Thu Nov 07 2013 09:25:40 GMT+0800 (中国标准时间)
Universal Time:Thu Nov 7 01:25:40 UTC 2013
Julian Day:2456603.55949
CONSTELLATIONLeo
CURRENT DISTANCE
Distance from Earth to ISON:1.0669 AU
99,172,195 miles
Distance from the sun to ISON:0.8443 AU
78,487,209 miles
Velocity:28.42 miles/second
Light Time:8.87 minutes
Load Time:
页:
[1]