火星 ALPO-Japan Latest
Mars Image 2020/07/06(UT)
Yaroslav Naryzhniy,Clyde Foster,Jose Luis Pereira,Dmitry W. von Aichegg
Y.Naryzhniy,C.Foster,J.Luis,Dmitry.W
解説(安達)/ Comment by Makoto Adachi
Yaroslav Naryzhniy氏は、今回の大規模なダストストームの発生地点を記録している。一時は見えなくなっていたオーロラ(Aurorae Sinus;53W,-10)
の東側は、ぼんやり見えてきた。しかし、この位置より東の半球は非常にダスティーで、模様が極端に見えにくくなっている。Clyde Foster氏の
画像では、低緯度地方のダストが淡くなってきている様子を記録している。チトニウス(Tithnius Lacus; 80W~90W,-0)の暗斑群がすべて見える
ようになった。ダストベールの下に見えているが、すべて見えたのは今シーズン最初かもしれない。
Dmitry W. von Aichegg氏の画像は、久しぶりにこの地域を観測している。肉眼で見たイメージに近いだろう。メリディアニ付近はダストに
覆われている。ノアキス(Noachis;335W〜10W, -25〜-30)にできたダストストームはかなり拡散しているようだ。濃く見える模様がなく,
肉眼での観測は厳しいだろう。
Mr. Yaroslav Naryzhniy records the location of this massive dust storm. The eastern part of the Aurorae Sinus (53W,-10), which was
once invisible, is faintly visible. However, the hemisphere to the east of this position is extremely dusty, making the pattern extremely
hard to see. Mr. Clyde Foster's image shows dust in the low latitudes becoming fainter. All the dark spots of Tithnius Lacus (80W~90W, -0)
became visible. It's visible under the Dust veil, but it may have been the first to see it all this season.
The image of Mr. Dmitry W. von Aichegg observes the area after a long time. It will be similar to the image as seen with the naked eye.
The area around Meridiani is covered with dust. The dust storm created on Noachis (335W~10W, -25~-30) seems to be quite diffused.
There is no pattern that looks dark, and observation with the naked eye will be difficult.
(by 4 observations; reported by Makoto Adachi)
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400mm Dall-Kirkham : ZWO 290MM,Seeing 4/10 Trans 5/10
[Yaroslav Naryzhniy : Ukraine,Kiev region]
Seeing was just about good enough to put out a full data set,although the B was very poor.
The main albedo features around Valles Marineris (almost centre) and Solis Lacus (just above centre) can be seen
which indicates to me that there is not intense,large scale dust activity in this region.
However,I again have the perception of yellow-brown clouds or haze over a lot of the terminator region
as well as possibly extending across the southern regions near the SPC.
It’s just a pity that the recent seeing conditions(for a lot of southern observers it seems) have been poor.
The session yesterday morning was a total write-off.
[Clyde Foster:Centurion,South Africa]
[Jose Luis Pereira :Sao Caetano do Sul/Sao Paulo/Brasil]
[Dmitry W. von Aichegg : Domodedovo,Moscow Russia]