Galileo's Sky

Vixen BT81S-A & Pentax 100 SDUF side-by-side
As usual, we have a regular meeting today.
But today, we decided to have something different, no tech discussion, but to have some fun.
Craig brought his Pentax 100 SDUF, BinoViewer, Gitzo 5530S tripod, Gimbo head and amazing eyepiece collection to my place to have some tests.
We had tested both scopes with Pentax eyepieces, Meade HD-60 eyepieces, Explore Scientific eyepieces, Edmund Optics eyepieces, Vixen LV eyepieces and two Plossl eyepieces of unknown brand. All of them  performs very well for both scopes, especially those of low powers.

A big binocular just arrived!
等了半個月, 終於, 期待已久的大雙筒望遠鏡到了!
這次沒那麼好的運氣, 被課了總共 10% 的稅! 搞不懂, 為什麼要課 5% 的營業稅? 所為何來?
不管這麼多了, 雖然多花了錢, 收到東西, 還是很興奮的!
就來開箱一下囉!

Easier way to mount my Megrez90 on the Manfroto 055+501HDV tripod

Today, I got my Raspberry Pi.
It has been more than 2 months, I thought.

The EastGlory Vixen style Heavy Duty Dovetail Saddle
EastGlory (曜東科技) 這一陣子針對天文望遠鏡及相機應用,
設計了一系列高品質的鳩尾板及鳩尾槽, 也進入了量產階段,
我也取得了一些樣品, 準備好好應用在我的 GM8 和 Vixen Atlux 赤道儀.

今天是中秋節, 不烤肉  (因為昨天晚上已經烤過啦),
天氣一整個好到不行, 濃濃的秋意, 沁心的涼風, 讓關在家裡快一天的一家人終於忍不住要出來兜兜風.
去哪裡好呢?  就去海邊吧!
香山濕地, 每到秋天就會想要來這裡, 尤其是傍晚, 這裡的夕陽真是美極了!!

Got a day off because of typhoon SAOLA. There's strong wind and crazy rain outside.
Good for me to have a day of nothing to be busy with.
So, what to do for today?
Ok, I do have something unfinished for more than two weeks. This is a good chance to have more investigation about why it failed last time.
It's my small project, which I call "

EastGlory Dovetail Saddle Plate (EastGlory 鳩尾槽座) & Vixen New Atlux 赤道儀
上星期剛出爐的 EastGlory Dovetail Saddle Plate,
非常扎實的用料和設計, 整塊 6061-T6 鋁合金 CNC 成型, 陽極處裡, 硬化處理,
整體質感超乎原來預期的好!
比起一些常用的廠牌來得更好.

在 Windows 7 下, 以 WinAVR 編譯 er9x 韌體
我盡量以我所知方式做 step-by-step 說明.
這裡假設 WinAVR 已經事先安裝在 PC 裡了.
1. 下載 er9x 的 source code 後, 應可長出如圖 1 的目錄結構.

2012-6-6 Transit of Venus 金星凌日 黑滴現象 (black drop effect)                                                                
 
早上 5:30 起床, 搶拍一下難得一見的金星凌日,
2004 年的那一次也看到了, 所以, 最近的這兩次都看到了, 再來就等來世吧