Tonight's theme: Open Cluster in Autumn sky.
Note that due to the mon rise the telescope will leave at around 9 pm.
有 3821 筆資料符合您搜尋的條件
- 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: 2157
- 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: 2185
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.
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.
- 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: 2151
20 inch telescope will proceed PTC tonite (30 Sep 2018)
As title.
Tonight's theme: dim, small and rarely seen galaxies.
Tonight's theme: dim, small and rarely seen galaxies.
- 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: 2042
20 inch telescope will proceed PTC tonite(29 Sep)
As title. Tonight's main theme : open clusters.
- 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: 4140
Re: 雲南双子天文庄園
Balancing weights, plenty. Tripod ? I’m not quite sure.
- 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: 4140
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...
- 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: 4794
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...
- 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: 4794
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.
- 週二 05 6月, 2018 06:40
- 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: 4794
Re: 8吋鏡 - 拋光/球面化時遇到的問題
You have a huge amount of turned down edge, difficult to cure by pitch lap.
Best suggestion : go to #1200 fine grinding and do polishing again with hard pitch. What is the f/no. of your mirror ?
Best suggestion : go to #1200 fine grinding and do polishing again with hard pitch. What is the f/no. of your mirror ?
- 週五 01 6月, 2018 14:42
- 版面: 天文攝影 Astrophotography
- 主題: Jupiter by Window(31 may 2018)
- 回覆: 2
- 觀看: 606
Jupiter by Window(31 may 2018)
At the night of last day of May the stability was exceptionally good. I grasped the opportunity to shoot Jupiter when she just passed before my window. Telescope ; Celestron C11 Mount ; cpc1100 alt-azm mode. Camera ; ASI174MM Method : RGB Stacking software : AS!2 Post image processing : Registax 6 J...
- 週四 31 5月, 2018 13:18
- 版面: 天文攝影 Astrophotography
- 主題: Jupiter by window(30 May 2018)
- 回覆: 3
- 觀看: 549
Jupiter by window(30 May 2018)
Clouds!
This shot was made behind clouds so that resolution suffered a bit.
Telescope : Celestron C11
Mount : coc1100 alt-azm mode.
Camera : ASI174MM
Shooting method :LRGB
This shot was made behind clouds so that resolution suffered a bit.
Telescope : Celestron C11
Mount : coc1100 alt-azm mode.
Camera : ASI174MM
Shooting method :LRGB
- 週三 30 5月, 2018 15:55
- 版面: 天文攝影 Astrophotography
- 主題: 二零一八,南天打咭
- 回覆: 8
- 觀看: 1218
Re: 二零一八,南天打咭
Oh my god!
- 週三 30 5月, 2018 14:48
- 版面: 天文攝影 Astrophotography
- 主題: Jupiter from window(29 May 2018)
- 回覆: 0
- 觀看: 555
Jupiter from window(29 May 2018)
Yesternight was another night with clear weather. Although the stability was mediocre but from time to time steady seeing did exist. This shot was taken during such time slot. Telescope : Celestron C11 Mount : coc1100 alt-azm mode. Camera : ASI174MM Shooting method : RGB Notice that this is only a R...
- 週二 29 5月, 2018 06:59
- 版面: 天文攝影 Astrophotography
- 主題: Jupiter from window(27 May 2018)
- 回覆: 4
- 觀看: 866
Jupiter from window(27 May 2018)
The seeing in 27 May was not superb but still acceptable, at least enough to resolve Io when she travel across the face of Jupiter.
Telescope : Celestron C11 at f/25
Mount : cpc1100 in alt-azm mode.
camera ; ASI174MM + RGB
This picture was captured in RGB mode. There was no L channel.
Telescope : Celestron C11 at f/25
Mount : cpc1100 in alt-azm mode.
camera ; ASI174MM + RGB
This picture was captured in RGB mode. There was no L channel.