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主题: M57星云,环状星云
作者: Forrest Egan
望远镜: TeleVue 76
其他配件:Nikon Coolpix 995 afocal
+WO DCL-28
曝光时间:
nineteen 45 sec @ f/2.9 (ISO400)
eight 55 sec @ f/2.9 (ISO400)
twelve 45 sec @ f/2.9 (ISO400 B&W) for Luminance
拍摄地点与视像状况:
拍摄日期: 2003年9月15日
附注:

 

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