rjxie 发表于 2004-5-20 18:11

[酷图] 印度小峡谷上空的尼特彗星。

Comet NEAT (Q4) Over Indian Cove
Credit & Copyright: Wally Pacholka (Astropics)
Explanation: Comet NEAT (Q4) was quite photogenic earlier this month. Although the head and part of the tails of Comet C/2001 Q4 (NEAT) were visible to the unaided eye, the best views of the colorful tail were revealed only later by cameras able to expose for long periods. A human eye can accumulate light for up to 1/10th of a second, as opposed to the above camera image, which used an exposure of thirty seconds on May 8. Visible is a long blue ion tail, a blue coma surrounding the comet's nucleus, and a shorter but brighter sunlight reflecting dust tail. Q4 is dropping more from easy visibility each day as it recedes from both the Earth and the Sun. Another separate naked-eye comet, Comet LINEAR (T7), should remain bright into June.

ufo 发表于 2004-5-20 18:18

漂亮！
感觉带地景的更好看

每米1982 发表于 2004-5-20 21:48

岩石应该有补光！
天空有的发灰，不够通透

玄天凌龙 发表于 2004-5-24 18:00

好美！

ic5067 发表于 2004-5-25 23:59

火舞精灵 发表于 2004-5-26 09:53

好漂亮哦～
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