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北京天文同好会首次观测到1P/Tuttle-Giacobini-Kresak彗星和1999T1(McNaught-Hartley)彗星

原载[星光快讯]网站

2000年12月22日晚北京天文同好会成员顿建中、于杰鸿、齐锐、高松青、寇文一行5人,来到怀柔箭扣,准备观测小熊座流星雨和41P Tuttle-Giacobini-Kresak彗星和1999T1彗星。

因天不好,原计划22日晚观测的流星雨没看成。在凌晨4点半大家已准备睡觉时,天突然放晴了,我们顺利观测到41P和1999T1彗星。所用望远镜为俄罗斯f500/F5.6折反镜头,目镜放大20倍、50倍。两颗彗星都在天秤座,相距还不到10度。

23日凌晨5点10分观测到41p/Tuttle-Giacobini-Kresak彗星,亮度8.4等,DC=4,D=3分。
23日凌晨5点45分观测到1999T1( McNaught-Hartley)彗星,亮度7.8等,DC=6,D=5分,感觉彗发不对称,比41P亮许多、大许多,非常容易找到!简直就象一个比较明亮的梅西耶天体!

目前这两颗彗星,都在过近日点附近,亮度最亮,特别适合爱好者的小望远镜观看。天亮前在东南方低空,比较利于观测,我们估计6厘米口径的望远镜都可以看到,当然要详细的星图,可看星光快讯网页的“彗星论坛”栏目。同一凌晨观看两个彗星,而且都是很亮的,真是十分不易,请大家一定要珍惜这一机会!!!


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