当前位置:[北京同好会]>[天象观测]>[2002T7彗星]

 

2002T7彗星观测

2004年2月14日早晨天很蓝,恰逢周末,中午寇文就开始张罗找人,抓紧最后的时间去观测2002T7彗星。

下午6点钟,王炎、曹军、刘丁、尹相东和寇文分乘2辆车在清河收费站会合后沿八达岭高速向西北开去。7时许到达八达岭,就在高速路出口附近的一个停车场安顿下来。尹相东的小儿子一下车就到处嚷着要看“脏雪球”,煞是可爱,看来尹相东的科普工作非常到家。

此时的天空已是猎户高悬,金星挂在西方低空。天很晴,天顶方向很好,周围地平附近并不很黑。附近公路上车灯以及2百米开外一盏明灯小有干扰,但对观测并无大碍。


架设赤道仪,旁边的小朋友在见习。

7点多朱进和夏丹驾车来到,也带来了天文馆的FSQ106,这是今晚观测彗星的主力。

尹相东和寇文分别使用数码相机直接和接在望远镜后拍摄彗星。由于地平高度较低,彗星照片的反差很小:

拍完彗星后,尹相东开始使用他的4500接在FSQ106后面拍摄M42。以下是3张约90秒曝光的照片叠加处理后的结果。想想以前要曝光近一个小时才能得到类似的效果,数码技术确实为我们带来了极大的方便。

以下是曹军使用FS78和995拍摄的昴星团。4张40秒照片叠加,可见14等星。F8的焦比,云气很不明显。

晚上9点左右东方红一号过境。朱进动员大家用各种手段一齐观测。9点,王炎发一声喊,他使用双筒镜在预报位置昴星团附近看到,虽然大家都把目光投向那里,但因卫星比较暗淡,目视都没有找到。王炎回忆起当年东方红一号卫星发射成功后他去农村宣讲时亲身经历过的一件趣事,让大家乐得前仰后合。


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