4月15~20 是雙彗星 可拍 41p + c2015 v2

[peter]

4月15~20 是雙彗星 可拍 41p + c2015 v2


===

41P/Tuttle-Giacobini-Kresak 彗星

http://www.skyandtelescope.com/observing/comet-41pt-g-k-glows-green-for-st-paddys-day/



Comet 41P/Tuttle-Giacobini-Kresak pairs up with the beautiful spiral galaxy NGC 3198 on March 14.
Chris Schur






http://www.aerith.net/comet/catalog/0041P/2017.html

[peter]

FB 甘醫生

https://www.facebook.com/photo.php?fbid=1263678030419833&set=a.103821636405484.4761.100003329437162&type=3&theater



詹榆芃

[peter]

TS 兄

https://www.facebook.com/photo.php?fbid=1750224741658231&set=a.396690670344985.107726.100000121666737&type=3&theater




https://groups.yahoo.com/neo/groups/CometObs/conversations/messages/7067

41p
2017 Mar. 18.84 UT: m1=9.5 (S) , dia=5' , DC=3 , x97 , F/4,9 , L-30.5 cms....

[peter]

http://www.universetoday.com/134273/catch-comet-41p-tuttle-giacobini-kresak-best/



Comet 41P glows green (left) and shows its true coma and just the hint of a stubby tail in the negative (red) image (right) from March 19th. Image credit and copyright: Hisayoshi Kato




An amazing view: Comet 45P Honda-Mrkos-Pajušáková pinged by Arecibo radar last month. Credit: Arecibo/USRA


March 29th: passes into Draco
April 2nd: Passes near the 3.6 magnitude star Thuban (Alpha Draconis)
April 5th: Passes just 0.15 AU (23.2 million kilometers) from the Earth at 13:30 UT.
April 7th: passes just 22 degrees from the north celestial pole at declination 68 degrees north.
April 11th: reaches perihelion at 1.05 AU (162.7 million kilometers) from the Sun.
April 18th: passes the 2.7 magnitude star Rastaban (Beta Draconis)
April 20th: passes into the constellation Hercules

[peter]

4月底是雙彗星 可拍 41p + c2015 v2

[peter]

看來4月底兩顆彗星 會靠近


c/2015V 2




41p

[peter]

下面圖是有錯誤  ??

sky TELESCOPE
http://www.procyonsystems.com/wordpress/4p-comet-campaign-seeks-imagers-worldwide/

不知道是那邊搞錯了

要看 heavn above  stellarium 也可以
好像位置不太一樣阿

[peter]

https://www.cloudynights.com/topic/570976-comet-41p-tuttle-giacobini-kresak-stroll-through-ursa-major-timelapse/



GIF

https://photos.google.com/share/AF1QipOksBGcA4SPTubZLlYBZkES_5U1O9_hr2Mbk0m4iWIS7tp7mkYcdPaNdx29Buq7VA/photo/AF1QipMBaDUQ9dwKF7plv4l4zEM0m8MiOP1FSjPzUenK?key=ZU5iLWNTdG9RR1FOUDRFdnpUVW5FWExRRkZ6dk1n

[peter]

http://www.schursastrophotography.com/newcomets/Comet41P-032417.html


Lens:  10" f/3.9 Orion Astrograph with Baader MPCC coma corrector
Platform:  Astrophysics AP1200
Camera: SBIG ST10XME
Exposure:  1h 45m
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing  2/10, Transparency 8/10
Outside Temperature:  40F
Processing Tools:  Maxim DL, Photoshop CS2

尾巴不明顯 ??

[peter]

新竹市區光害很大
沒有 濾鏡

canon 400mm f5.6  30s  iso 800  41P 好暗阿

上週用 456 打太暗想說換 f2.8  , but  135mm f2.8東德那本來想加 barlow x2, 但是 無法合焦 .
 而且法蘭距很短 得使用 原來那 m42 轉環 ,  如果 套 Tring 一樣無法合焦, 一開始沒發現後才知道
 不能合焦 .135mm 太小拍不到彗星 .
後來11 點多開始換 456 .

好暗阿


硬拉出來得小綠色 ..

[peter]

新竹市區光害很大
沒有 濾鏡

canon 400mm f5.6  40s  iso 800

M97  M108   好暗阿

[peter]

135mm  f.28  好小
看 stellarium 彗星 下那顆
曝到 11.5等星 

沒看到彗髮阿 .

[peter]

aspen 測試

http://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=27960.msg229390;boardseen#new

[peter]

41p


晚上  8 點多

[peter]

快可以拍雙彗星了