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Chanlunlun
週六 02 9月, 2017 10:19
版面: 天文攝影 Astrophotography
主題: 2017美國日全食
回覆: 8
觀看: 241

Re: 2017美國日全食

Arch national park + milky way = my dream. I went to Salem for solar eclipse and there were plenty space for free camping both in the central park or in our privately discovered park next to our hotel. A friendly park ranger could also helped us to arrange the camps in the site if in case we heeded ...
Chanlunlun
週四 31 8月, 2017 11:03
版面: 廠製儀器 Factory Equipment
主題: 新手買望遠鏡請教!
回覆: 4
觀看: 349

Re: 新手買望遠鏡請教!

Only at cloudless nights.
Chanlunlun
週三 30 8月, 2017 10:32
版面: 廠製儀器 Factory Equipment
主題: Celestron C5 會係支好既便攜望遠鏡嗎?
回覆: 3
觀看: 249

Re: Celestron C5 會係支好既便攜望遠鏡嗎?

Not at all good. The focal length of C5 is 50 inches, or at 1270 mm giving a minimum amplification around 40X. You cannot go lower because the baffle tube reduces the field of vision. Theoretically a 5 incher should offer a minimum amplification of 20X, at exit pupil of about 6 mm, maintaining no en...
Chanlunlun
週三 09 8月, 2017 08:42
版面: 天文活動消息 Astro Activity News
主題: 2017年美國日全食
回覆: 21
觀看: 1405

Re: 2017年美國日全食

For telescope of this size, it is heavy - 2.2 kg for a 4 inch RFT. While building this telescope 30 years ago, the dominating design philosophy was to use as much metal as possible for rigidity and so you could see that the telescope is using aluminium end rings, bronze focuser and other metallic pa...
Chanlunlun
週二 08 8月, 2017 09:59
版面: 天文活動消息 Astro Activity News
主題: 2017年美國日全食
回覆: 21
觀看: 1405

Re: 2017年美國日全食

明天就耍出發,心情異常興奮,沿途會帶着4吋的RFㄒ,郵輪上覌星和覌看食甚。 [樂奔]
Chanlunlun
週六 05 8月, 2017 06:40
版面: 天文活動消息 Astro Activity News
主題: 2017年美國日全食
回覆: 21
觀看: 1405

Re: 2017年美國日全食

Thanks Mr. Tang.

Where will you go ?
Chanlunlun
週四 03 8月, 2017 10:33
版面: 天文活動消息 Astro Activity News
主題: 2017年美國日全食
回覆: 21
觀看: 1405

Re: 2017年美國日全食

現在距離出發日子尚有6天,正是未出發先興奮。將會帶同4吋RFT一支觀看食甚時的太陽,另20號晚上亦可用作 Salem 郊外觀星之用。
Chanlunlun
週二 25 7月, 2017 19:01
版面: 天文活動消息 Astro Activity News
主題: 16吋鏡今晚出動PTC
回覆: 0
觀看: 147

16吋鏡今晚出動PTC

今晚天氣出乎意料地好,唔出動對自己不起。
Chanlunlun
週二 11 7月, 2017 06:07
版面: 天文攝影 Astrophotography
主題: 2007年內蒙NGC7331高清版
回覆: 4
觀看: 412

Re: 2007年內蒙NGC7331高清版

Never underestimate the power of C8. Excellent shot, first class image by a mediocre C8.
Chanlunlun
週日 02 7月, 2017 14:26
版面: 天文活動消息 Astro Activity News
主題: 天文攝影之應用及深入討論研討會(2017_7) 額滿已截止報名
回覆: 10
觀看: 861

Re: 天文攝影之應用及深入討論研討會(2017_7)

PMed. But I have no idea whether it is a successful PM or not because I am a low tech guy.

So I posted here again.
Chanlunlun
週五 23 6月, 2017 16:14
版面: 天文活動消息 Astro Activity News
主題: 16inch telescope will proceed ptc tonite (23 June 2017)
回覆: 1
觀看: 339

16inch telescope will proceed ptc tonite (23 June 2017)

我知今晚天氣極不穩定,但係聯校活動連旅遊巴都book埋,錢到俾晒唯有冇奈照去,邊個路過都可以過來睇吓㗎。
Chanlunlun
週一 01 5月, 2017 07:49
版面: 天文活動消息 Astro Activity News
主題: 16 inch telescope will proceed tonite (30 Apr 2017)
回覆: 1
觀看: 240

Re: 16 inch telescope will proceed tonite (30 Apr 2017)

個天好灰,連睇m81都只係僅僅見到個核,星系巢裡面個m86真係暗到幾乎見唔到,不過好彩有 BenBen 支APM 5吋三枚玉俾我開下眼界,咁沉晚都叫有收獲。
Chanlunlun
週日 30 4月, 2017 18:20
版面: 天文活動消息 Astro Activity News
主題: 16 inch telescope will proceed tonite (30 Apr 2017)
回覆: 1
觀看: 240

16 inch telescope will proceed tonite (30 Apr 2017)

As title.

Tonite's target :- galaxies, of course.
Chanlunlun
週三 22 3月, 2017 19:20
版面: 天文活動消息 Astro Activity News
主題: 2017年美國日全食
回覆: 21
觀看: 1405

鄧登凳 寫:If you have enough time, go to Grand Teton
Been to there before. Alaska is my target this year.

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