当前位置:[北京同好会]>[天象观测]>[2004年5月21日八达岭观测月掩金星]

 

2004年5月21日八达岭观测月掩金星

5月21日晚上天气预报并不乐观。到了下午,虽然西边有云彩,但看上去不是大片的乌云,而云缝后露出的天空挺蓝。因此还是决定出去。

7点多曹军、刘丁和尹相东三人从学院路出发。正逢周末,路上车流缓慢,快8点才上了八达岭高速。天色渐渐黑了下来,西方天空非常晴朗。车到南口向西北驶去,在正前方低空一弯新月,上面不远就是明亮的金星,在山峦的映衬下非常美丽。大家不由得一阵感叹,每次出去总是忙于拍照,不知错过了多少美景。

8点半到达八达岭出口的停车场。空旷的停车场在西北方向毫无遮挡,点缀着星月的夜空异常静谧安详。三人急忙架设家伙。

这样小的月龄下拍摄的最大问题是月亮和金星的亮度相差悬殊,如果照顾月亮,则金星必然曝光过度,反之则月亮曝光不足。

掩星很快开始了。月亮的高度越来越低,气流的扰动非常厉害,金星的色散也愈发明显。

金星被遮住一半:

最后一点光芒:

在金星掩食后不久,月亮就变成了奇怪的彩带:

渐渐没入山后,从视野中消失:

尹相东拍摄的系列照:

接下来用707,995和4500拍摄了Q4。由于都是接在目镜后拍摄,彗尾不明显。

995拍摄:23张叠加

4500拍摄,18张叠加:


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