[quote:63719e4f9f="活动星图"]

引用:

我同时校准和启动秒表

这里应该也有个人差吧[/quote]

觀測人差及對時人差在這裏討論。

[quote:d6f8539bc6="Archimedes"]那我如何获得我启动秒表时的“真实时间”呢——既然GPS和国家授时中心都有误差？[/quote]
除非使用計時用 GPS，否則定位用的 GPS 和国家授时中心都有误差！兩者都可以用錄音機將短波收音機「報時電台」每小時的報時訊號，連同觀測者讀出定位 GPS 或者国家授时中心在互聯網顯示的秒數記錄，以便比較。

[quote:0ef4a3e740="Archimedes"].....但我想放大被率左右很大，到了23：08分以后，看得十分辛苦，木卫二成了在木星旁的一个突起物，然后慢慢下去……[/quote]
其中一個解決方法是用錄像的方法，將掩食現象記錄，然後重覆播放，掩始的現象時間便容易判斷，觀測誤差相對比較單靠肉眼觀看的少。

附圖是 1987 年一次的木衛掩始的錄像記錄，當時的計時設備只能顯示至 0.1秒。現時由軟件分析至0.04秒（或者0.02秒），甚至更高精度，視乎採用的錄像硬件設備。

starry night 應該能模擬
不知道 準不準

ＳＮ虽然可能能模拟，但准确度肯定不如专门软件．

引用:

其中一個解決方法是用錄像的方法，將掩食現象記錄，然後重覆播放，掩始的現象時間便容易判斷，觀測誤差相對比較單靠肉眼觀看的少。

录象的确好，但我一直以来用的都是目视观测，我想如果观测次数多了，精度或许会提高的吧？

我的LOW 3.1打开后怎么是这样？看了一下相关帖子，似乎没有讲到这个的。问题出在那？

[quote:e7b1c583a4="Archimedes"]我的LOW 3.1打开后怎么是这样？看了一下相关帖子，似乎没有讲到这个的。问题出在那？[/quote]
有關 LOW 3.1 安裝，在日食與掩星觀測標題內有討論。

感谢指点，现已成功！

Observation of I. Tr. E today.
Recorded time:21:17:04.054
Individual error:0.198s
Real time:21:17:03.856
I think the timing is a failure because the timer was thought to work out when the Io was just to come out of the face of Jupiter,I checked it and found it was noting wrong at all!!I observed Io again and found it had already been out!!Though I stopped the timing immediately,it was about 20s' late,I estimate.
By the way,I lost a good chance to observe the I.Sh.I at 12 21.5 UT because I thought my telescope could not see the shadow of moons and did not do it at all!As a matter of fact,I was completely wrong,I could see the shadow of Io move slowly on the face of Jupiter.It seems that I can have more project to do about the timing.
Also some information about my telescope:
refractor,D=100mm,F=700mm,G=70x.
That's all.
Oh,I forgot to write down the seeing just now on the web:Seeing:I~II(Antoniadi)

[quote:7dbc4e0d73="Archimedes"]Observation of I. Tr. E today.
Recorded time:21:17:04.054
Individual error:0.198s
Real time:21:17:03.856
.....
Also some information about my telescope:
refractor,D=100mm,F=700mm,G=70x.
That's all.[/quote]

Thank you for sharing your observation experience. More practice will improve your observation technique.

Cheers !

好，上报陈栋华和occultation两位老师吧。 ^^

报告occultation，刚才看到SDA流星群群内流星掩一颗约3等的恒星。 :mrgreen:

And more.
The observation of I. Sh. E
Recorded time:22:28:58.104
Individual error:0.198s
Real time:22:28:57.906
Telescope:refractor,D=100mm,F=700mm,G=70x.
PS:the seeing felt to III(Antoniadi),I could not see clearly when the shadow of Io getting out of the face of Jup.I think the time error isn't small:almost 1min earlier than the predicted time.
Okay,all of the observations about Jupiter and its moons that I can see has been finished now.

多谢台风带走乌云，得，这一对数据都到手了，翻译一下吧。

这个表对吧？

[quote:74b1557c59="活动星图"]多谢台风带走乌云，得，这一对数据都到手了，翻译一下吧。[/quote]谢什么！？今天踢完球到阳台上一看，红云漫天，估计台风要来了。但愿这次别再带来那么多的灾害了！

台风还远着呢，现在还不是台风。

我看那云图那个东东正逐渐加强呢！结构越来越清晰……跑题了！

你也做做月掩星的观测吧

[quote:6f35f0b56e="Archimedes"]这个表对吧？[/quote]
对，发到BA2CR邮箱吧。 ^^