Google+
本地晴天鐘
2011/02/04
NexGuide Autoguider 20 mins testing result
English:
Waiting for long long time for this testing due to weather issue. Dec.2010 and Jan 2011 2 months almost cloudy,windy and raining days here.
I set NexGuide Autoguider DEC back 0.2 today according to around 1 pixel shift on 20 mins shooting results yesterday. I really satisfy today's result in 20 mins. It is still pinpoint stars. But seems my Skywatcher ED80 need to do a bit adjustment to have
better pinpoint light.
These few days are Chinese Lunar new year holiday here and I set to portrait style and M-RAW mode in lunch and forgot to set back to L-RAW. Hope this results help you to consider whether Nexguide is the one of your selection. For me, it's enough. No more
investment on astro equipment is needed.
Above testing with following equipment..
HEQ5
SkyWatcher ED80 F600mm
Guide Scope A60 F220mm
Canon 7D DSLR
Celestron NexGuide Autoguider
Have clear skies.
Cheers
中文:
這個日子等了非常久了,兩個月來終於等到有個完整的天空可以測試這個20分鐘結果。昨天測試的時候,雲非常多,幾乎有三分之一的時間都會有雲遮住星空,但是因為直接瞄準天狼星,所以知道20分鐘的狀況會有約一、二個畫素的位移,因此今天的設定改變了DEC BACK從0改為0.2。
這個數字應該是根據赤道儀的不同誤差有所變化,最早的測試我就已經測試出我的赤道儀有這個數字的誤差,果然今天改成0.2之後,星點就是圓的。
單張20分鐘有拍了三張,兩張都如附圖一樣圓,第三張應該是受到附近大型沖天炮影響到,震動到了。基本上應該不是導星器的關係,過年那些人不知道錢太多還是有個有錢的老爸,沖天炮好像免費一樣,打整晚...難得有好天氣卻沖天炮到處亂飛..
今天去親戚家吃午飯拍照忘記設定回來,結果拍m42三張後才想到星點怎好像沒有對焦好,一看m-raw沒改回來,焦距也沒有對準,不過應該是值得參考的一張照片,希望對各位好友的抉擇有所幫助。我對這個導星器目前的評價還是很正面的,但是就不知道兄弟牌的SKYWATCHER Synguider是不是一樣穩定囉! 各項規格看起來幾乎相同,希望結果也是一樣的正面。
以上設備用的是
HEQ5
SkyWatcher ED80 F600mm
Guide Scope A60 F220mm
Canon 7D DSLR
Celestron NexGuide Autoguider
祝各位的星空美好,另祝農曆新年快樂囉!
2011/01/24
2010/12/21
陽春道具的極限測試1
Chinese:
測試道具: SkyWatcher HEQ5 pro, Celestron NexGuide Autoguider+ 60220導星鏡, SkyWatcher ED80/600+ Kenko X 2 加倍鏡,Canon 7D + CLS FF filter + ISO1600
這幾樣道具其實老早都在手上,但是沒有合體測試過,眼見昨夜的天空那麼亮,很多不利條件存在,月齡14幾乎把天空照亮,視星等連北極星都看不到之下,這幾樣在天文攝影不算好的設備到底能夠發揮到如何呢?
尤其加上兩倍鏡的狀況下,赤道儀會不會拖線很大?
說實在的在測試前真的非常沒有把握!
以下這張是35分鐘的測試結果,每張只用75秒的時間,共28張疊合。因為沒有用這麼長的焦段架上赤道儀拍攝過,
所以沒有把時間拉長到更長,加上冬季的風不是穩定的吹,所以就保守點,等下次再看看更長的時間囉!
不過說實在,600 x 2(1200mm)如果加上APSC x 1.6 等同焦距是 1920mm 結果暫時讓我滿意囉!
沒想到的是,M42星雲用這樣的焦段竟然剛好把M42放到APSC的整個畫面而已...
English:
Equipments: SkyWatcher HEQ5 pro, Celestron NexGuide Autoguider+60x220mm guiding telescope, SkyWatcher ED80/600mm+ Kenko X 2 Len,Canon 7D + CLS FF filter
Reason to make this test:
1. I would like to know what is the limitation on these equipment that I have. I never put them together to take astro photo.
2. Last night moon age is day 14. Night sky was so brightness, I would like to know whether NexGuide Autoguider is still functional as normal.
3. These equipments are not the best equipment in Astro-graphic field, I try to convince myself not to buy new equipment which are very high price in market.
From the result 75 seconds x 28 frames ISO1600 on M42 nebula, I am happy with the results. Total 28 frames without trails on stars. Due to winter time in Taiwan always with unstable wing speed, only tested 75 seconds to prevent too many fail tracking result. Next time will try to test it in Spring time here for longer time period on tracking.
I am so surprise 600x2(1200mm) shooting M42 nebula can fit on APSC Canon 7D. I though it will over the CMOS size.
測試道具: SkyWatcher HEQ5 pro, Celestron NexGuide Autoguider+ 60220導星鏡, SkyWatcher ED80/600+ Kenko X 2 加倍鏡,Canon 7D + CLS FF filter + ISO1600
這幾樣道具其實老早都在手上,但是沒有合體測試過,眼見昨夜的天空那麼亮,很多不利條件存在,月齡14幾乎把天空照亮,視星等連北極星都看不到之下,這幾樣在天文攝影不算好的設備到底能夠發揮到如何呢?
尤其加上兩倍鏡的狀況下,赤道儀會不會拖線很大?
說實在的在測試前真的非常沒有把握!
以下這張是35分鐘的測試結果,每張只用75秒的時間,共28張疊合。因為沒有用這麼長的焦段架上赤道儀拍攝過,
所以沒有把時間拉長到更長,加上冬季的風不是穩定的吹,所以就保守點,等下次再看看更長的時間囉!
不過說實在,600 x 2(1200mm)如果加上APSC x 1.6 等同焦距是 1920mm 結果暫時讓我滿意囉!
沒想到的是,M42星雲用這樣的焦段竟然剛好把M42放到APSC的整個畫面而已...
English:
Equipments: SkyWatcher HEQ5 pro, Celestron NexGuide Autoguider+60x220mm guiding telescope, SkyWatcher ED80/600mm+ Kenko X 2 Len,Canon 7D + CLS FF filter
Reason to make this test:
1. I would like to know what is the limitation on these equipment that I have. I never put them together to take astro photo.
2. Last night moon age is day 14. Night sky was so brightness, I would like to know whether NexGuide Autoguider is still functional as normal.
3. These equipments are not the best equipment in Astro-graphic field, I try to convince myself not to buy new equipment which are very high price in market.
From the result 75 seconds x 28 frames ISO1600 on M42 nebula, I am happy with the results. Total 28 frames without trails on stars. Due to winter time in Taiwan always with unstable wing speed, only tested 75 seconds to prevent too many fail tracking result. Next time will try to test it in Spring time here for longer time period on tracking.
I am so surprise 600x2(1200mm) shooting M42 nebula can fit on APSC Canon 7D. I though it will over the CMOS size.
2010/10/21
PHD guiding 參數設定分享
目前用這些數據,感覺很穩定。
設備:
赤道儀: HEQ5 pro
主鏡: SkyWatcher Ed80 F600
導星鏡: F400
導星CCD: Meade DSI pro II
參數請看圖
如果用DSLR記得ASCOM那邊要設定600x1.6(canon) =960mm的焦長哦!
聽說很多人導600mm以上都很會拖線,我猜想某些朋友可能忘了這個重點!
這個問題是用了幾次失敗後突然想到應該換算成等同焦段來導,改過之後就準的不得了!
當然極軸還是要對準,赤道儀至少要做單星校正哦! 目前這個設定導過45分鐘左右的經驗。
2010/10/12
訂閱:
文章 (Atom)
