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Mars Image 2020/06/25(UT)
井上 修
Clyde Foster,Mark Lonsdale,Milika-Nicholas
C.Foster,O.Inoue,M.Lonsdale,Milika-Nicholas
解説（安達）/ Comment by Makoto Adachi
発生したダストストームはオーロラ（Aurorae Sinus;53W,-10）の北にある。どの観測者も明らかなダストストームを記録している。
マリネリス（Marineris; 40W〜75W, -12）はダストが入り込んで帯状に見え、この付近が濃いダストに覆われていることを示している。
Clyde Foster氏の画像では、SPC周縁部をのぞいて、全面がダストのベールに覆われている様子を記録している。Milika-Nicholas氏の
画像では、マリネリスよりも南に幅の広い帯状にダストの広がっている様子を記録している。こういったダストが、見え方を悪くしている
原因だろう。
The dust storm that occurred is north of Aurorae Sinus (53W,-10). All observers record a clear dust storm. Marineris (40W-75W, -12)
is dust-like and looks like a band, indicating that this area is covered with thick dust.
Mr. Clyde Foster's image records the entire surface covered by a dust veil, except for the SPC edge. Mr. Milika-Nicholas's image records
dust spreading in a wide band south of Marineris. This kind of dust may be the cause of poor visibility.
（by 4 observations; reported by Makoto Adachi)
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A very brief,but rewarding session in brightening sky this morning. Elysium at lower right. I am a bit suspicious of a subtle light feature at lower left,most noticeable in G,but the RGB looks to me like it may have a dust component. It could just be cloud (although not that prominent in B),but worth watching as it appears to be quite large.
The upper right limb,towards Hellas,is noticeably brighter.
[Clyde Foster:Centurion,South Africa]
雲の切れ間からなんとかＲＧＢ画像を撮りましたが、この後すぐ曇ってしまいました。
≪大阪府 枚方市 井上 修≫[Osamu Inoue. Hirakata-shi,Osaka,Japan]
I enclose a composite〓image from early this morning local time in Canberra,that has a possible dust plume in the vicinity of Lunae Planum,north of Valles Marineris.
The feature is most prominent in the R and IR685 channels,but seeing was not great for me and the G and B channels were poor,and deteriorated towards the end when I captured the IR image.
I present the R image with an enlargement of the possible plume in the composite,and also attach the R image separately.
The RGB image looks dusty,and there appear to be streaks of dusty clouds in Coprates and Ganges Chasms,if I am not mistaken.
[Mark Lonsdale : [Canberra,Australia]
Images from 25th June revealing enormous amounts od dust in the Martian atmosphere in areas
that normally display a large amount of detail,
especially evident in the red channels shown with the rgb images here.
[Milika-Nicholas:Adelaide,South Australia]
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