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Noctilucent cloud of Ariane 5 flight #VA247, 





    
        

            Shenyan Zhang

Noctilucent cloud of Ariane 5 flight #VA247

Technical card

Imaging telescope or lens:Samyang 135mm f2

Imaging camera:Nikon D800 Mod

Software:Adobe photoshop 2017

Resolution: 552x369

Date:Feb. 6, 2019

Time: 06:30

Frames: 90

FPS: 17.50000

Focal length: 135

Locations: Shangri-La City, Shangri-La City, YUN NAN, China

Data source: Traveller

Description

It is indeed a really rare phenomena. I captured this photo during my holiday from 02/02/2019 to 02/11/2019. On 02/05/2019, I have been to Shangri-La City, YUN NAN, China to take photos for the milky way. About 5.30 AM I went out of my car to finish a wide-field mosaic of The Milky way. And then, I came back to my car to warn up my body. About 30min later, The milky way raised a little bit higher and I went to capture it again in order for a better result. Oh, is it the bright object the C/2018 y1, I think? It is the most brightest comet during these days. I had never seen such a bright comet before. At that time I hesitated for a while, I can not believe it is a comet. I change a long focal lens of my Nikon camera to aim at the target to try a ten second exposure. However, when the screen refreshed, I was totally scared. my mine was changed suddenly. it is absolutely not a comet! Oh my god! What is this? When I claim down, I decide to find out the answer.

According to my research in the internet, It is a rare shiny phenomena call Noctilucent cloud. Noctilucent cloud means a cloud that forms high up in the atmosphere. However, It is not a normal Noctilucent cloud. it must have had something to do with an astronomic events: a rocket Ariane flight #VA247 launched from Spaceport, French Guiana (Guiana Space Center) at 6:01 PM 02/05/2019 Kourou, French Guiana. The cloud was formed by this rocket. it's trail created a huge plume of ice crystals in the high atmosphere.

The reason the cloud was so bright on the dark sky is that the cloud formed in really high altitude. Although the sun was below the horizon, the cloud was illuminated in the dark sky.

Noctilucent clouds are generally colourless or pale blue. The characteristic blue colour comes from absorption by ozone in the path of the sunlight illuminating the Noctilucent cloud. They are considered a "beautiful phenomenon".

Ariane 5 flight #VA247

http://www.arianespace.com/mission/ariane-flight-va247/

For its first launch of 2019, Arianespace will orbit two telecommunications satellites using an Ariane 5 from the Guiana Space Center: Saudi Geostationary Satellite 1/Hellas Sat 4, a condosat for KACST (and Hellas Sat; along with GSAT-31 for the Indian Space Research Organisation (ISRO).

Through this 103rd Ariane 5 mission – the 70th with an Ariane 5 ECA version – Arianespace confirms its leadership in the geostationary launch services market segment.

Version C and D is the information of the rocket.

Version E is the expenation of that rare phenomena.

Version F is a version taked from around 5.30AM. It is a 8 frame mosaic. I use Sigma 20mmf1.4@f2 to finish my work. It contains The Venus, the most brightest star in the sky, the Jupiter, the secondry brightest star, and the Zodiacal light which is dim blue. The blue bright object at the end of the Zodiacal light、on the right of this photo is the Noctilucent cloud of Ariane 5 flight #VA247.

Version G is a version taked from 6.00AM. The Noctilucent cloud of Ariane 5 flight #VA247 become dimmer than the perious version.

Version H is a special version with high resolusion of the GIF.

Version L is a single frame version. The shape of the cloud will be change with time.

Version M is a version to indicate the blue sky and the Noctilucent cloud appeared in the same time. It is about 7.00AM. It is an interesting version. The highest mountain faraway is The Haba Snow Mountain.

Haba Snow Mountain (Chinese: 哈巴雪山; pinyin: Hābā Xǔeshān; literally: "Haba Snow Mountain") is a mountain rising above the northwest side of Tiger Leaping Gorge in Yunnan, China. It rises opposite the higher Yulong Xueshan, and towers 3,500 metres above the upper reaches of the Yangtze River, also known as the Jinsha River.[3] The summit of the mountain is a popular destination for amateur mountaineers and its lowest slopes are crossed by the popular Tiger Leaping Gorge trail.

The Haba Snow Mountain massif is considered the southernmost extent of the expansive Shaluli Mountains, themselves a component range of the Hengduan Mountains

Shangri-La was formerly called Zhongdian County (中甸县; Zhōngdiàn Xiàn) but was renamed on 17 December 2001 and upgraded into a county-level city on 16 December 2014 as Shangri-La (other spellings: Semkyi'nyida, Xianggelila, or Xamgyi'nyilha) after the fictional land of Shangri-La in the 1933 James Hilton novel Lost Horizon, in an effort to promote tourism in the area. The Tibetan population refers to this place by its traditional name Gyalthang or Gyaitang (Standard Tibetan: རྒྱལ་ཐང།; Wylie: rgyal thang, ZWPY: Gyaitang), meaning "Royal plains". This ancient name is reflected in the Tibetan Pinyin name of the town of Jiantang (建塘; Jiàntáng)[citation needed], the county seat.

Comments

Author

LAZYMAN
Shenyan Zhang
License: None (All rights reserved)
1901
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Revisions

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    Noctilucent cloud of Ariane 5 flight #VA247, 





    
        

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E

At these altitudes, water vapor can freeze into clouds of ice crystals. When the sun is below the horizon and the ground is in darkness, these high clouds may still be illuminated, lending them their ethereal, ‘night shining’ qualities.

H

High resolusion version!

Histogram

Noctilucent cloud of Ariane 5 flight #VA247, 





    
        

            Shenyan Zhang