火星 ALPO-Japan Latest

Mars Image 2020/04/13(UT)

Eric Sussenbach,Niall MacNeill
E.Sussenbach,N.MacNeill

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解説（安達）/ Comment by Makoto Adachi
　Eric Sussenbach氏のＩＲ画像は、ヘラス付近のダストストームは、この日は淡くなっている様子が分かる。Niall MacNeill氏のダスト
ストームの観測は3日間連続で、非常に重要な観測となった。3日分まとめた画像が報告され、見比べると進行の様子がよくわかる。
ダストストームは全体的に拡散していく様子が見事に記録されている。また、ＳＰＣからアルギレ(Argyre;30Ｗ,-50 )の西から弱いエッジ
ダストストームが北に吹き出している様子が見える。淡く明るい模様が北に広がり、3日目には広く拡散している様子が分かる。

Mr. Eric Sussenbach's IR image shows that the dust storm near Hellas is fading this day. Mr. Niall MacNeill's observation of 
the dust storm became a very important observation for three consecutive days. The images compiled for 3 days are reported, 
and the progress is well understood by comparing them. The dust storm is well documented as it spreads throughout. 
Also, from the SPC, it can be seen that a weak edge dust storm is blowing north from the west of Argyre (30W, -50). It can be seen that 
a faint and bright pattern spreads to the north and spread widely on the third day.

（by 2 observation; reported by Makoto Adachi)


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[Eric Sussenbach : [ Willemstad,Curacao (Dutch Caribbean)]

The large albedo area of Mare Erythraeum is highly obscured by a brownish coloured cloud, 
which extends down to the South Polar Cap, where it is slightly discolouring the northern part of it. 
The cloud further north is lighter in colour as it has been on previous days. 
As I examined the image, I was concerned that I might have had a dust mote on my sensor or something darkening the southern hemisphere of the planet. 
Yet coincidentally, if it was in my optics, it was following the curve of the planet at a south tropical latitude.
This is a perhaps a dust cloud which is dispersing around the southern latitudes of the planet.


Mars three days in a row showing the dark obscuration of the planet in the southern latitudes.

[Niall MacNeill : Wattle Flat,NSW,Australia]

ALPO-Japan Latest Mars Section	2020/04/14
	2020/04/12