有 77 筆資料符合您搜尋的條件
- 週三 09 8月, 2017 11:45
- 版面: 廠製儀器 Factory Equipment
- 主題: 可在哪買到A4 size黑色太陽filter?
- 回覆: 1
- 觀看: 2323
可在哪買到A4 size黑色太陽filter?
下星期出發到美國,請問可在哪買到約A4 size的膠質黑色太陽filter? 謝謝
- 週五 02 11月, 2012 00:58
- 版面: 太陽觀測和攝影 Solar Observation & Photography
- 主題: 買巴德膜ND3.8
- 回覆: 1
- 觀看: 1540
買巴德膜ND3.8
日全食用. 我原有的好像有穿孔的情況, 安全點還是買新的好. 請問在哪裏可以買到?
- 週五 02 11月, 2012 00:54
- 版面: GRUS 天文社
- 主題: 最新款铝合金巴德膜盖子
- 回覆: 88
- 觀看: 37974
- 週一 17 9月, 2012 23:26
- 版面: 天文話題 Everything about Astronomy
- 主題: 2012 澳洲日全食
- 回覆: 26
- 觀看: 21585
我會在10Nov至15Nov在Cairns停留, 有興趣聯系者可email j@ij.hk
- 週四 14 6月, 2012 13:29
- 版面: 天文話題 Everything about Astronomy
- 主題: 2012 澳洲日全食
- 回覆: 26
- 觀看: 21585
- 週三 06 6月, 2012 21:32
- 版面: 太陽觀測和攝影 Solar Observation & Photography
- 主題: We all saw it, it's real - the Black Drop Effect (with pic)
- 回覆: 72
- 觀看: 20791
Re: We all saw it, it's real - the Black Drop Effect (with p
For the 03.jpg, edge of the Sun is blurred. I wounder if it is simply 1. bad focusing, 2. bad seeing, or 3. vibration. From the double edge of the sun, I suspect it is vibration. Dears, We have prepared but did not expect to observe the black drop effect today. It really happened. At about 10 minute...
- 週三 06 6月, 2012 18:11
- 版面: 太陽觀測和攝影 Solar Observation & Photography
- 主題: We all saw it, it's real - the Black Drop Effect (with pic)
- 回覆: 72
- 觀看: 20791
Sorry! my telescope is 80mm, not 70mm. That's why I can't capture blackdrop effect? The same settings at 6sec before 3rd contract (12:31:18pm) 1/8000s ISO100 Again, no obvious blackdrop effect. This is taken at Star Avenue, about 9sec after 2nd contact. I don't think there is obvious black drop effe...
- 週三 06 6月, 2012 16:12
- 版面: 太陽觀測和攝影 Solar Observation & Photography
- 主題: We all saw it, it's real - the Black Drop Effect (with pic)
- 回覆: 72
- 觀看: 20791
The same settings at 6sec before 3rd contract (12:31:18pm) 1/8000s ISO100 Again, no obvious blackdrop effect. This is taken at Star Avenue, about 9sec after 2nd contact. I don't think there is obvious black drop effect. I took a series of pictures around 2nd contact at a rate of about 1.5Hz. Details...
- 週三 06 6月, 2012 16:01
- 版面: 太陽觀測和攝影 Solar Observation & Photography
- 主題: We all saw it, it's real - the Black Drop Effect (with pic)
- 回覆: 72
- 觀看: 20791
This is taken at Star Avenue, about 9sec after 2nd contact. I don't think there is obvious black drop effect. I took a series of pictures around 2nd contact at a rate of about 1.5Hz. Details: Time: 6:29:46am Skyrover 70ED (d=70mm, focal length=560mm) Canon 30D 1/1000s ISO 250 Raw -> Jpg, 200%crop, w...
- 週三 07 12月, 2011 10:25
- 版面: 談天說地 Chatting Square
- 主題: PTC 好凍呀
- 回覆: 14
- 觀看: 3849
係哩個停車場嗎? http://g.co/maps/s5h4uMOON TO 寫:你在西貢碼頭坐小巴,在北潭涌巴士站落車,落左車見到個巴士站向左手邊行十幾步會見到一個空地。johnsonlau 寫:你地成日講的PTC, 可唔可以在google map上指出確實位置? Thanks!
同天文公園/東壩相比, 觀星條件如何? 可以見到銀河嗎? 我希望在月全食其間可有機會見到銀河 (當然還要看天氣)
- 週三 07 12月, 2011 02:06
- 版面: 天文話題 Everything about Astronomy
- 主題: 請問前往東壩交通如何前往?
- 回覆: 6
- 觀看: 6001
- 週三 07 12月, 2011 02:04
- 版面: 談天說地 Chatting Square
- 主題: PTC 好凍呀
- 回覆: 14
- 觀看: 3849
- 週一 05 12月, 2011 19:11
- 版面: 天文話題 Everything about Astronomy
- 主題: 月全食觀測地點
- 回覆: 4
- 觀看: 3192
月全食觀測地點
觀測月全食, 是否有必要盡量遠離光害? 在全食其間光害會有很大影響嗎? 有人打算去水口籮箕灣或石澳嗎? 在月食當晚應有很多人到那些地點觀測, 應該不怕治安問題吧?