当前位置:[北京同好会]>[观测档案]>[2008年日全食]>[北京天文馆日偏食观测记]

 

2008年8月1日北京天文馆日偏食观测记

李国良

2008年8月1日的日全食越来越近了。大家都在为观测日全食做着各种精心的准备。


我因客观原因不能和大家一起去全食带目睹这一壮观的奇异天象。一方面默默地预祝大家此次观测能取得圆满成功,一方面自己也在偷偷地想,做为多年的天文爱好者,现在又在天文馆里工作,虽然在北京只能观测到偏食(当然和全食相比其壮观程度差多了),也不应轻易放弃这一千载难逢的天象。在大家为天文观测做准备的时候我也精心设计和制做了日食观测用的遮光罩。

我的遮光罩是在一张厚卡纸上分别镶上了3.8和5.0的巴德膜及一个红色滤光片(这是一个多年前就发现能够有滤光作用的塑料盒盖)。我用这个红色滤光片的想法是:这次观测大家主要的减光措施都是用巴德膜,我想能不能在巴德膜之外出一点儿东西呢?

8月1日大家都已经走了两天了。馆里只有少数留守人员。早在头一天馆里的郭霞老师和张蕾就已经邀我一起观测日偏食了。当天下班后18:20,我和张蕾早早就把150*900的大观折射镜架上了天文馆的楼顶。郭霞老师则带领众多的来馆观测的群众在天文馆楼前广场上观测。


当日北京上空浓云密布,到了傍晚在层层叠叠的浓云夹缝内才露出丝丝缕缕的阳光来,如千万根金线射向四方,又如一幕金色的轻纱从云层缝隙间垂下。煞是好看。

不甘心的我们把望远镜指向云缝间的那一丝丝的阳光企盼能有瞬间云层打开的时候。16:30当我从望远镜中看到浓云缝隙间的太阳已然是被月亮遮住了好大的一块儿。

赶忙安上我心爱的400D相机。从取景器中搜索着太阳的面容。不时地调整曝光时间,按动快门线。好在拍照对象是太阳,用的是瞬间曝光。望远镜的调整跟踪问题不大。我和张蕾轮番上阵,一人拍照一会儿,另一个人就用相机标头拍照。

太阳在云缝间时隐时现,总也没有露出个全脸。我们在取景器中不断地搜索,不断地拍照……并且不时地调换滤光方式,以争取取得尽可能多不同种类的图象。



傍晚的北京上空云彩层层迭迭,千变万化;阳光丝丝缕缕,时隐时现。18:42天空中突然显现出五彩祥云,炫丽多彩,曼妙奇幻。张蕾首先发现了,就指给我看。我们分别用自己的相机拍照了下了这一奇妙的天气景象。


18:55,当最后一抹余辉渐渐隐去。我们开始收拾望远镜准备收摊的时候。郭霞老师和陈昌等人到楼顶上来看我们拍照的结果。在郭霞老师的帮助下,还把我拍照的一张相片放在了天文馆的网站上,这相当于我的天文照片的第一次发表。

在此向郭霞老师表示深深的感谢。同时也谢谢张蕾的帮助。


In fact, today the First World War, to some extent can be regarded as positive showdown between the league guard "and" league rookie cheap mlb jerseys ". Do not look Lillard is still very young, but this is cheap mlb jerseys not a simple challenge the cheap mlb jerseys Lakers have had single-game 38 points and grabbed a gorgeous performance of elected Rookie of the Year cheap authentic nhl jerseys seems nfl jerseys for cheap to be no longer any problem. But the saying goes, ginger or the old lady the veterans Paul would give rookie Lillard lesson. Compared with the other guard, cheap mlb jerseys Paul's strengths is it? nike from china Through the game, they can be aware of, cheap jerseys china the CP3 the most cheap jordan shoes powerful places convenient that cheap mlb jerseys wholesale he can make all of cheap air max his teammates all integrate into the team's offensive system. Only 10 seconds after the opening, Paul would give Griffin sent assists cheap nike shoes ---- offensive Well, gotta start playing cheap nike shoes from the strongest point cheap mlb jerseys wholesale very clear ideas.Hit game 1 minute 01 seconds, Lillard cheap jerseys near the sideline, the slightest mistake will be Paul steals, followed by the direct fast break, cheap mlb jerseys if given the chance, CP3 certainly will cheap nhl mlb jerseys not miss. Then, the bottom line cheap baseball jerseys missed a mind open soccer jerseys cheap threes, Paul immediately gave Gelifensai, the assists. On the defensive end, Hickson with his ways, cheap jerseys china and one is not careful, he mlb jerseys china was Paul Miaoshoukongkong that.When teammates feel gradually picking nfl jerseys for cheap up, the power of Paul and cheap nike china it cheap nike shoes has revealed. Crawford hit the third base line, from his passing; Butler reached the inside of hook attack, the same Paul assists. 2 minutes and 55 seconds left in the first section, Griffin once again into the box attack succeeded, Needless cheap snapback to say, certainly is CP3 pass.Into cheap snapback the second half of the game, Paul's expertise is even more pronounced is no doubt that cheap air max Butler less than 3 minutes hit consecutive three goals, all from the CP3 assists: Who is the hot hand put the ball reached the hands of who, this is the control Wei bounden duty.In fact, look soccer jerseys cheap at the data, Paul halftime cheap mlb jerseys china kick down 8 points and 5 assists, the data also generally like not Bililade to strong to go. However, if look at the score, CP3 Clippers throw off the Blazers with 17 points. In fact, this is the outstanding point guard for the team's value lies. Throughout the audience, Paul 8 cheap authentic nba jerseys points and 11 assists cheap mlb nhl jerseys and only one turnover, while Lillard finished cheap nba jerseys 12 4, contributed 12 points, eight assists and four turnovers. The small rookie performance is not bad, but cheap mlb jerseys compared to Paul, still a lot less.Now cheap mlb jerseys that you have locked the advantages of natural Paul can play a little live flowers. Four minutes left in the third quarter, Paul fast break moving directly thrown high the small Jordan hip into the sky with one hand split the ball into the basket. In the ensuing? Have no need in the field continue to adhere to. 25 minutes 11 assists, led the team to victory, Paul, with their actual performance, a lesson to the younger generation Lillard..