Visibility of stars, halos, and rainbows during solar eclipses.
Visibility of stars, halos, and rainbows during solar eclipses.
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日食期间恒星、光晕和彩虹的可见度。
DOI：
10.1364/ao.47.000h14
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发表时间：
2008
期刊：
影响因子：
1.9
通讯作者：
C. Hinz
中科院分区：
文献类型：
--
作者：
G. Können;C. Hinz
研究了在日偏食和日全食期间，恒星、行星、衍射日冕、光晕和彩虹的可见性。给出了局部相位各阶段的极限幅度。在日全食期间，与非日食条件相比，天空的辐射是典型的1/4000。相应的极限星等为+3.5。总的来说，衍射日冕、光晕和彩虹的信本比下降了250倍。我们发现在日全食的太阳周围仍可能出现衍射日冕。对黄昏期间月晕观测的分析表明，明亮的月晕显示也可能在全食期间持续存在。全食时出现彩虹似乎是不可能的。
The visibility of stars, planets, diffraction coronas, halos, and rainbows during the partial and total phases of a solar eclipse is studied. The limiting magnitude during various stages of the partial phase is presented. The sky radiance during totality with respect to noneclipse conditions is revisited and found to be typically 1/4000. The corresponding limiting magnitude is +3.5. At totality, the signal-to-background ratio of diffraction coronas, halos, and rainbows has dropped by a factor of 250. It is found that diffraction coronas around the totally eclipsed Sun may nevertheless occur. Analyses of lunar halo observations during twilight indicate that bright halo displays may also persist during totality. Rainbows during totality seem impossible.