Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Solar system body or event
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C/2019 Y4 ATLAS and UGC 4305, 



    
        

            Steed Yu
C/2019 Y4 ATLAS and UGC 4305
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C/2019 Y4 ATLAS and UGC 4305

Getting plate-solving status, please wait...
C/2019 Y4 ATLAS and UGC 4305, 



    
        

            Steed Yu
C/2019 Y4 ATLAS and UGC 4305
Powered byPixInsight

C/2019 Y4 ATLAS and UGC 4305

Imaging telescopes or lenses: SharpStar 15028HNT

Imaging cameras: QHYCCD QHY247C

Mounts: iOptron CEM 60

Guiding telescopes or lenses: QHYCCD QHYmini Guide Scope

Guiding cameras: QHY5L-II-M

Software: Pleiades Astrophoto S.L. PixInsight 1.8.8 Ripley  ·  Adobe Photoshop 2020  ·  Astro Photography Tool - APT APT - Astro Photography Tool v3.63

Filters: Optolong 2" UV/IR Cut


Dates:March 27, 2020

Frames:Optolong 2" UV/IR Cut: 101x100" (gain: 2200.00) -20C bin 1x1

Integration: 2.8 hours

Darks: ~100

Flats: ~50

Flat darks: ~50

Avg. Moon age: 2.78 days

Avg. Moon phase: 8.47%

Bortle Dark-Sky Scale: 3.00


Astrometry.net job: 3398150

RA center: 8h 22' 45"

DEC center: +69° 34' 48"

Pixel scale: 2.977 arcsec/pixel

Orientation: 87.020 degrees

Field radius: 1.908 degrees


Resolution: 3840x2560

Locations: qingshui, Beijing, BeiJing, China

Data source: Traveller

Description

上周五的C/2019 Y4 ATLAS彗星,3月27日北京时间21时-24时(1300-1600 UT)摄于北京门头沟清水镇附近。

之所以这么构图,是为了把彗星和UGC 4305框在一起。这是个不规则矮星系,距离地球约980万光年。虽然隶属于M81星系群,它却是少数不受邻近星系引力影响的星系之一。天文学家研究过这个星系里的恒星形成过程,据说跟开香槟时触发的连锁反应类似。

只可惜,漏算了这颗彗星的尾巴…… 才几天不见,彗尾已经这么长了,一直拖到了视场之外,没有拍全。周六本想补拍,然而天气不好,也只能作罢了。等接下来的大月亮过去,不知道它会长成什么模样呢?

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C/2019 Y4 ATLAS and UGC 4305, 



    
        

            Steed Yu

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