Incredible!!!
3 inch f/12 Newtonian is using spherical mirror. It is one of the cheapest astronomical telescope ever made. But the result is stunning.
有 3821 筆資料符合您搜尋的條件
- 週日 08 4月, 2018 18:37
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (3 Apr)
- 回覆: 0
- 觀看: 2174
- 週五 12 1月, 2018 17:15
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed ptc tonite (12 Jan)
- 回覆: 2
- 觀看: 2537
- 週四 11 1月, 2018 18:17
- 版面: 天文活動消息 Astro Activity News
- 主題: 16 inch telescope will proceed ptc tonite (11 Jan)
- 回覆: 0
- 觀看: 2026
16 inch telescope will proceed ptc tonite (11 Jan)
As title.
Tonight,s target?Fornax galaxies cluster.
Tonight,s target?Fornax galaxies cluster.
- 週五 22 12月, 2017 10:08
- 版面: 自製天文望遠鏡 Amateur Telescope Making
- 主題: 自制150 牛頓折射鏡(折射反射兩用,消色差APO或普消
- 回覆: 2
- 觀看: 3090
Re: 自制150 牛頓折射鏡(折射反射兩用,消色差APO或普消
這設計一點也不實際,6吋 f/5 的APO 物鏡就算有錢也買不到,就算天價買到也不會比的6吋牛反有超大幅度的質量提升,若果用6吋 f/5普消透鏡,二次光譜將大得無法接受。
想來想去,想不通這設計有何實際之處。
想來想去,想不通這設計有何實際之處。
- 週四 21 12月, 2017 10:23
- 版面: 天文活動消息 Astro Activity News
- 主題: 16 inch telescope will proceed astro park tonite (21 DEC)
- 回覆: 0
- 觀看: 2219
16 inch telescope will proceed astro park tonite (21 DEC)
There will be a joint school star gazing party held at astro park tonight. Those who happen to have a chance to pass by are welocmed.
Tonight's theme : galaxies, of course.
Tonight's theme : galaxies, of course.
- 週四 21 12月, 2017 00:34
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (18 DEC)
- 回覆: 7
- 觀看: 3386
Re: 20 inch telescope will proceed PTC tonite (18 DEC)
Tonight cannot go. I have to work till and I still need to go to work very early next morning.
Just released from my work and arrive home. It's the already the next morning.
Just released from my work and arrive home. It's the already the next morning.
- 週三 20 12月, 2017 10:54
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (18 DEC)
- 回覆: 7
- 觀看: 3386
Re: 20 inc telescope will proceed PTC tonite (18 DEC)
Don't worry, the 20 inch or 16 inch telescope will proceed to Astro Park tomorrow's night. There will be a joint school star observing party there.
The party will start at 1800, see you there if you are interested.
The party will start at 1800, see you there if you are interested.
- 週一 18 12月, 2017 23:02
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (18 DEC)
- 回覆: 7
- 觀看: 3386
Re: 20 inc telescope will proceed PTC tonite (19 DEC)
Sorry I mean 18 Dec.
- 週一 18 12月, 2017 17:19
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (18 DEC)
- 回覆: 7
- 觀看: 3386
20 inch telescope will proceed PTC tonite (18 DEC)
As title. Telescope will arrive at about 1800
- 週日 17 12月, 2017 14:23
- 版面: 香港搖控天文台 Hong Kong Remote Telescope
- 主題: 麗江雙子莊園遙控望遠鏡計劃 - 有計劃但未落實(諮詢意願)
- 回覆: 5
- 觀看: 15925
Re: 麗江雙子莊園遙控望遠鏡計劃 - 有計劃但未落實(諮詢意願)
高美古的確係好地方,但這計劃要考慮和 itelescope 等的時租望遠鏡的競爭方為周詳,事關itelescope 有大鏡玩 , 可以玩埋遠 galaxy ,當然雙子有其優勢,就係可以用自己傢生,成功感會大D。
- 週日 17 12月, 2017 14:09
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (16 DEC)
- 回覆: 5
- 觀看: 3133
- 週日 17 12月, 2017 14:00
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (16 DEC)
- 回覆: 5
- 觀看: 3133
Re: 20 inch telescope will proceed PTC tonite (16 DEC)
昨天晚上天氣好,透明度頗高,但大氣非常動盪,20時鏡中看到的星點非常肥大,到了大約九時天空開始積雲,所以收鏡走了。
回到家中十點未夠,總覌測時間少於一小時,創最短覌測時間記錄,但收獲還是多的:
1 覌看了幾個常看的目標之後,得出結論是 在PTC天空質素之下,以乎16吋口徑已達極限,把口徑再加大以乎助益不大。
2 20吋望遠鏡應該在香港以外地方使用,一句講晒,個天唔夠黑,大鏡都唔得。
回到家中十點未夠,總覌測時間少於一小時,創最短覌測時間記錄,但收獲還是多的:
1 覌看了幾個常看的目標之後,得出結論是 在PTC天空質素之下,以乎16吋口徑已達極限,把口徑再加大以乎助益不大。
2 20吋望遠鏡應該在香港以外地方使用,一句講晒,個天唔夠黑,大鏡都唔得。
- 週六 16 12月, 2017 18:09
- 版面: 天文活動消息 Astro Activity News
- 主題: 20 inch telescope will proceed PTC tonite (16 DEC)
- 回覆: 5
- 觀看: 3133
- 週二 12 12月, 2017 14:50
- 版面: 天文活動消息 Astro Activity News
- 主題: 招募陰拿山攝星戰友
- 回覆: 4
- 觀看: 2972
Re: 招募陰拿山攝星戰友
Dear titan,
any hotel stay in Yina mountain? Are we going to sleep at hill side ?
any hotel stay in Yina mountain? Are we going to sleep at hill side ?