親子觀星會

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/

(http://www.skyandtelescope.com/wp-content/uploads/41P-with-3198-galaxy-Chris-Schur_ST.jpg)

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


(http://www.skyandtelescope.com/wp-content/uploads/41P-March-April-path.jpg)



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

(http://www.aerith.net/comet/catalog/0041P/2017-mag.gif)

(http://www.skyandtelescope.com/wp-content/uploads/41P-orbit-theskylive.jpg)

(http://www.skyandtelescope.com/wp-content/uploads/41P-with-M97-M108_S.jpg)

FB 甘醫生

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

(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17309648_1263678030419833_2372548382998393969_n.jpg?oh=fd0006602aaf98db3b3aeec434d71ae3&oe=595A2005)

詹榆芃
(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17362443_1592715897420290_47921142675058321_n.jpg?oh=ed6474aed7640210aef627a5bab16c39&oe=5952BABC)

TS 兄

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

(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17426330_1750224741658231_6742038391115099066_n.jpg?oh=bcfd34f3c4a9920281a88245e97c0de0&oe=5959B598)


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....

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

(http://www.universetoday.com/wp-content/uploads/2017/03/33423821181_f0352cb24a_z.jpg)

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

(http://www.universetoday.com/wp-content/uploads/2017/03/Starry-Night-768x548.jpg)

(http://www.universetoday.com/wp-content/uploads/2017/03/Comet45PHMPgif.gif)
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

4月底是雙彗星 可拍 41p + c2015 v2

看來4月底兩顆彗星 會靠近


c/2015V 2
(http://www.aerith.net/comet/catalog/2015V2/chart1.gif)
(http://www.aerith.net/comet/catalog/2015V2/mag.gif)


41p
(http://www.aerith.net/comet/catalog/0041P/2017-chart.gif)

(http://www.aerith.net/comet/catalog/0041P/2017-mag.gif)

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

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

(https://www.cloudynights.com/uploads/monthly_03_2017/post-199774-0-63230000-1490258343.jpg)

GIF

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

http://www.schursastrophotography.com/newcomets/Comet41P-032417.html
(http://www.schursastrophotography.com/images/CURCOMT/Comet41P-032417/Comet41P-032417Schur-400.jpg)

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 ??

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 ..

新竹市區光害很大
沒有 濾鏡

canon 400mm f5.6  40s  iso 800

M97  M108   好暗阿

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

沒看到彗髮阿 .

aspen 測試

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

41p


晚上  8 點多

快可以拍雙彗星了

https://www.facebook.com/photo.php?fbid=10155232598076177&set=a.10150762679666177.467085.608451176&type=3&theater&notif_t=like_tagged&notif_id=1490807967942289
(https://scontent-tpe1-1.xx.fbcdn.net/v/t31.0-8/17620207_10155232598076177_5783751874414820175_o.jpg?oh=89be7dd802076abf0a4ec3cce2565997&oe=5965A2C4)


Huang Hoshibara
小油坑
Star Adventure, NikonD810A, Tamron 70mm, ISO1600, 60s  , 尚未疊圖。

有沒有最接近的日期?

http://www.cometwatch.co.uk/comet-45p-re-emerges-from-conjunction/

41P 網路直播  https://live.slooh.com/stadium/live/comet-41p-close-approach
在愚人節當天飛掠地球， 因此也獲得了“愚人節彗星”的昵稱。
 設在大西洋加那利群島天文臺的 Slooh望遠鏡將在4月1日全程觀測,並向全世界直播Comet 41P/Tuttle-Giacobini-Kresak彗星掠過地球的情景。

http://www.cobs.si/images/latest-lightcurve.png

 (http://www.cobs.si/images/latest-lightcurve.png)

VC200L(1800mm, f/9)+6D(mod) on Vixen SXP + WO50208 Lacerta M-Gen Guiding
ISO 6400, 300s, single.

甘醫生

https://www.facebook.com/photo.php?fbid=1276744822446487&set=a.103821636405484.4761.100003329437162&type=3&theater

(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17626545_1276744822446487_2695001815689136774_n.jpg?oh=cdbe7e2c40a0c582025593eab46e5e0c&oe=5960F0B1)

http://spaceweathergallery.com/indiv_upload.php?upload_id=134344&PHPSESSID=lujpttlr5tp92ct37kc03tbcd3

Comet 41P/Tuttle-Giacobini-Kresak Passing By M108
Taken by Yasushi Aoshima on March 22, 2017 @ Fukushima, JAPAN

(http://0e33611cb8e6da737d5c-e13b5a910e105e07f9070866adaae10b.r15.cf1.rackcdn.com/Yasushi-Aoshima-C41P20170322UT1138-1504-1_1490892300_lg.gif)

41P is at closest approach to Earth
http://www.itelescope.net/sky-alerts/2017/4/2/alert-comet-41p-is-at-closest-approach-to-earth.html
 http://www.itelescope.net/display/ShowImage?imageUrl=/storage/41P_GRAS%20chart%20april.png?__SQUARESPACE_CACHEVERSION=1491128210777

(http://www.itelescope.net/storage/41P_GRAS%20chart%20april.png?__SQUARESPACE_CACHEVERSION=1491128210777)

41P/Tuttle-Giacobini-Kresak彗星將在4月12日過近日點

==

http://www.cnbeta.com/articles/science/599343.htm

著名的彗星41P（又名Tuttle-Giacobini-Kresek）距地球的距离达到了150年来的最近值，仅有2120万公里。北半球的观星者用小型望远镜或双筒望远镜便可亲眼目睹它从空中划过的倩影。彗星41P属于一类名叫“木星彗星”的天体，它们被木星的巨大重力捕获，在太阳和木星之间运行。

该彗星最初被发现于1858年，每5年半围绕太阳转动一圈。而今年该彗星的近日点刚好处于地球轨道稍靠外一点的位置。因此从3月29号到4月3号之间，这颗彗星到地球的距离将达到史上最近。4月1号愚人节当天，该彗星距地球距离仅为日地距离的十分之一。

在此期间，彗星将从北方夜空的大熊座和天龙座间穿行而过。它在清晨和日暮时分最为清晰。无法亲眼见到该彗星的人可以观看加纳利群岛上望远镜拍摄的直播视频。

这颗彗星相对较小，并且色泽黯淡，很难用肉眼观察。但天文学家指出，今年它在靠近太阳时，亮度会大大提升。

1973年，这颗彗星一度变得十分明亮，亮度高达正常情况下的一万倍。

“没人知道这颗彗星在1973年为何会亮度爆发，但1995年、2001年和2006年的细致观察显示，这一现象往往出现在彗星到达近日点前后。”纽约海顿行星观察台的天文学家乔·劳（Joe Rao）

1973 年噴了


1995  2001 2006 

https://www.facebook.com/eric.kan.75/videos/vb.100003329437162/1279580208829615/?type=2&theater

41p moving ...

https://astronomynow.com/2017/04/02/see-a-trio-of-comets-in-the-april-sky/
Comets 41P/Tuttle–Giacobini–Kresák in Draco and C/2015 V2 (Johnson)
(https://assets.cdn.astronomynow.com/wp-content/uploads/2017/04/03082259/Comet_41P_C2015_V2_tracks_April_678x509.gif)

幸運抓到一顆小流星飛過41P旁

 (http://www.cobs.si/images/latest-lightcurve.png)
不過怎寫 2016 ??

(http://www.itelescope.net/storage/41P_GRAS_Chart_Perihelion.png?__SQUARESPACE_CACHEVERSION=1492088619720)

41p 到近日點了   6.x~7.x 等間

magnitude 6.7-7.5

http://www.itelescope.net/sky-alerts

2 comet

https://www.facebook.com/photo.php?fbid=1626380264053853&set=gm.1378015618921931&type=3&theater
詹榆芃

‎天體暨宇宙事件攝影觀測聯萌
20170414-
41P與Johnson V2 相對位置接近
(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17952675_1626380264053853_864896703838594914_n.jpg?oh=e1c82a6215fd2c31e035b382e417534e&oe=5985DD5E)

http://spaceweathergallery.com/indiv_upload.php?upload_id=134868&PHPSESSID=i8824e16tp9m8lfdc0bj2h61n4


(http://0e33611cb8e6da737d5c-e13b5a910e105e07f9070866adaae10b.r15.cf1.rackcdn.com/Yasushi-Aoshima-C41PC2015V220170415UT1230-1_1492509621_lg.jpg)

==

http://spaceweathergallery.com/indiv_upload.php?upload_id=134857&PHPSESSID=i8824e16tp9m8lfdc0bj2h61n4

http://spaceweathergallery.com/indiv_upload.php?upload_id=135120&PHPSESSID=a62doj4l7pm7gg1go1o3o7iuo2

Taken by Carl Bernhardt on April 21, 2017 @ Joshua Tree National Park

(http://0e33611cb8e6da737d5c-e13b5a910e105e07f9070866adaae10b.r15.cf1.rackcdn.com/Carl--Bernhardt-IMG_3369_1493097067_lg.jpg)