香港天文論壇

凌晨4時被月光叫醒，趁月亮未下山，拍下這幅照片。

Google Map

最近找到舊天文雜誌

你的預測好準，真係高手！

邊個預測颱風準？19號晚上10時從互聯網取得。香港天文台和美國預測颱風吹到台灣，日本預測吹向汕頭。

最近幫朋友解決android mobile上不到wireless router問題，舊Android電話出唔到router SSID，新Android電話、電腦或ipad上同一router完全無問題。

Upgrade這router firmware之後，所有裝置成功接通。

Google fixed the bug.

Google made a mistake: “SUBTRACT CurrentYear FROM BirthYear” is a negative number.

It should be “SUBTRACT BirthYear FROM CurrentYear GIVING Age”.

很多可能!
如果你是連上自己的wireless router，試試可否開到router adm page，成功表是mobile到router的wifi connection是無問題。
如果是連上public wifi，多數是未sign in供應商的logon或agreement page。

恭喜，有作品供大家欣賞。

相信自設remote observatory的樂趣比用海外的hosting服務大得多，每一項細節都要自己解決。

Hi Raymond,

How to interpret SQM and why you say reading 20.05 is about 5.5 magnitude?

今早凌晨時分終於可用望遠鏡觀察到土星，到2時已被雲覆蓋。

Read the attached information and I have the following finding based on limited information: Part A - Programming 1. Simple solution is to use Windows environment as the software (I believe it is AAG_CloudWatcher 7.2) come with ActiveX "AAG_CloudWatcher.CloudWatcher". It is easy to read the final da...

pm the solution to you.

同天文台的預測好唔同。