有 3813 筆資料符合您搜尋的條件

Chanlunlun
週二 16 4月, 2019 07:57
版面: 天文攝影 Astrophotography
主題: 剛去完馬爾代夫,影左小小星空相
回覆: 8
觀看: 331

Re: 剛去完馬爾代夫,影左小小星空相

小人 寫:
週一 15 4月, 2019 15:40
Kani島,其實附近都幾光,已經揾個最黑嘅地方影
是否 club Med 的 Kani 島?是搭水上飛機去嗎?如果要的話應該附近環境頗黑。
當然也有可能島本身燈光火著。
Chanlunlun
週二 16 4月, 2019 07:44
版面: 自製天文儀器 diy Astro Equipment
主題: DIY Canon M3 Remote Timer Shutter
回覆: 7
觀看: 1808

Re: DIY Canon M3 Remote Timer Shutter

RC6是什麼來的? 是不是紅外缐二極管? 鴨尞街有得賣嗎?
個 remoter 是什麼牌子?是否鴨尞街也有賣?
我也很想做一個好像你一般B掣搖控,謝。
Chanlunlun
週二 29 1月, 2019 19:03
版面: 天文活動消息 Astro Activity News
主題: 20 inch telescope will proceed PTC tonite(29 Jan 2019)
回覆: 0
觀看: 271

20 inch telescope will proceed PTC tonite(29 Jan 2019)

As title. Tonight the transparency is much better than yesterday and hopefully, those galaxies could not be seen yesternight can be seen tonight.
Chanlunlun
週六 26 1月, 2019 17:23
版面: 天文活動消息 Astro Activity News
主題: 20 inch telescope will proceed ptc tonite (26 Jan)
回覆: 0
觀看: 175

20 inch telescope will proceed ptc tonite (26 Jan)

雖然今天透明度奇差,不過都去博一博。
Chanlunlun
週四 03 1月, 2019 22:36
版面: 談天說地 Chatting Square
主題: Happy New Year 2019
回覆: 7
觀看: 737

Re: Happy New Year 2019

Long Time no see, Boss Kwan.

Happy new year to you and to all.
Chanlunlun
週一 29 10月, 2018 17:20
版面: 天文活動消息 Astro Activity News
主題: 20 inc telescope will proceed PTC tonite (29 Oct 2018)
回覆: 1
觀看: 260

20 inc telescope will proceed PTC tonite (29 Oct 2018)

As tile. Tonite's theme: very very dim planetary and some very faint open clusters and galaxy. The telescope will leave at around 9:00 p.m.
Chanlunlun
週日 28 10月, 2018 17:19
版面: 天文活動消息 Astro Activity News
主題: 20 inch telescope will proceed PTC tonite(28 Oct 2018)
回覆: 0
觀看: 360

20 inch telescope will proceed PTC tonite(28 Oct 2018)

Tonight's theme: Open Cluster in Autumn sky.
Note that due to the mon rise the telescope will leave at around 9 pm.
Chanlunlun
週五 05 10月, 2018 17:52
版面: 天文活動消息 Astro Activity News
主題: 20 inch telescope will proceed PTC tonite (5 Oct 2018)
回覆: 0
觀看: 379

20 inch telescope will proceed PTC tonite (5 Oct 2018)

As title.

Tonight's main theme:- beautiful open clusters in the northern sky and some very small, very dim and very rarely observed galaxies.

The telescope will be dismantled at around 2300.
Chanlunlun
週日 30 9月, 2018 17:22
版面: 天文活動消息 Astro Activity News
主題: 20 inch telescope will proceed PTC tonite (30 Sep 2018)
回覆: 0
觀看: 379

20 inch telescope will proceed PTC tonite (30 Sep 2018)

As title.
Tonight's theme: dim, small and rarely seen galaxies.
Chanlunlun
週六 29 9月, 2018 17:35
版面: 天文活動消息 Astro Activity News
主題: 20 inch telescope will proceed PTC tonite(29 Sep)
回覆: 0
觀看: 394

20 inch telescope will proceed PTC tonite(29 Sep)

As title. Tonight's main theme : open clusters.
Chanlunlun
週四 26 7月, 2018 20:49
版面: 天文話題 Everything about Astronomy
主題: 雲南双子天文庄園
回覆: 11
觀看: 1125

Re: 雲南双子天文庄園

Balancing weights, plenty. Tripod ? I’m not quite sure.
Chanlunlun
週四 26 7月, 2018 18:27
版面: 天文話題 Everything about Astronomy
主題: 雲南双子天文庄園
回覆: 11
觀看: 1125

Re: 雲南双子天文庄園

I had paid a visit in the Gemini this February. A great place for deep sky imaging but just mediocre for visual observation. The site has been more or less contaminated by light pollution by surrounding villages. After midnight the situation improved a lot since most people got slept and lights were...
Chanlunlun
週五 22 6月, 2018 06:53
版面: 自製天文望遠鏡 Amateur Telescope Making
主題: 8吋鏡 - 拋光/球面化時遇到的問題
回覆: 9
觀看: 1456

Re: 8吋鏡 - 拋光/球面化時遇到的問題

The mirror is not smooth. Cold press can do very little towards matching the surface of mirror to pitch surface. You should hot press the pitch lap every time you start polishing again. Best of all is that the polishing should be done all in once, avoiding pressing the pitch lap from time to time. P...
Chanlunlun
週六 09 6月, 2018 07:37
版面: 自製天文望遠鏡 Amateur Telescope Making
主題: 8吋鏡 - 拋光/球面化時遇到的問題
回覆: 9
觀看: 1456

Re: 8吋鏡 - 拋光/球面化時遇到的問題

Back to #1200, mirror on top using 1/3 center to center stroke.

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