火星 ALPO-Japan Latest
Mars Image 2020/09/01(UT)
井上 修,安達 誠,大杉忠夫,熊森照明,伊藤了史,山口貴弘
Chris Nuttall,Fattinnanzi Cristian,Maximilian Teodorescu,Stanislas Maksymowicz,Dmitry W. von Aichegg,Gary Walker,Niall MacNeill,Mike Hood,Damian Peach,Johan Warell
C.Nuttall,O.Inoue,C.Fattinnanzi,M.Adachi,T.Ohsugi,T.Kumamori,Max,S.Maksymowicz,Dmitry.W,S.Ito,G.Walker,N.MacNeill,T.Yamaguchi,M.Hood,D.Peach,J.Warell
解説（安達）/ Comment by Makoto Adachi
Margaritifer Sinus (23W;-10)から南側は南北方向にダストの晴れた部分が見えてきた。肉眼ではっきり見え、画像でもその様子が記録された。
晴れてきた部分はSinus Sabaeus (320W~350W,-10)付近にもあり、いずれも青画像ではやや暗く（晴れ傾向）記録された。
Fattinnanzi Cristian氏の画像では、ターミネーターがSPCの左で明るい姿を示している。この部分は白っぽい黄色に見える。また、
その北側は夕霧で白っぽくなっているがArsia Silva Mons (W120,-3)の白雲とは色が違い、ダスト混じりの白雲（霧）になっている。
北極部は雲の見える所と見えにくいところがある。これはここしばらく続いている傾向で、Solis Lacusが中央に見える経度では、非常に
見えにくくなっている。一方、Mare Cimmerium (W180~W250,-40~0)の見える経度では大きい。Maximilian Teodorescu氏はその雲の様子を
鮮明に帰路記している。東西に筋状になり、北極側に雲の隙間から模様を記録することに成功している。その雲や模様は動画でも確認できる。
特別に注目したいのは、右端の青画像で、ターミネーター側に突起を2つ記録している。上の特記のやや下側にも、淡いふくらみがある
ようにも見える。下(南)のものはSPC周辺部のダストが見えていると思われる。北側は、白雲の境界線上にあり、局部的に雲が発達したのは
ないかと思われるが、確かではない。
Gary Walker氏・Mike Hood氏の画像では、Hellasの西や南側が砂漠色になっている様子を記録した。Hellasは白っぽい黄色。G画像と
B画像で明るいことから、この様子が判断できる。Hellasから右上にダストが見えているため、本来の円形の姿は分かりにくくなっている。
Niall MacNeill氏の画像でもNoachis (335W~10W,-25~-30)方面が、晴れて暗く写っている。
On the south side from Margaritifer Sinus (23W;-10),a clear dust part appeared in the north-south direction. It was clearly visible
to the naked eye and was recorded in the image. The part where it started to clear was also around Sinus Sabaeus (320W~350W,-10),
and all were recorded as slightly dark (clear tendency) in the blue image. In the image of Fattinnanzi Cristian,the terminator appears
bright on the left of the SPC. This part looks whitish yellow. The north side of the cloud is whitish due to the evening mist,but its color is
different from the cloud of Arsia Silva Mons (W120,-3) and is a cloud of dust (fog).
In the Arctic,there are places where clouds can be seen and places where it is difficult to see. This is a trend that has been
going on for some time,and it is very hard to see at the longitude where Solis Lacus is visible in the center. On the other hand,
it is large in the longitude that Mare Cimmerium (W180~W250,-40~0) can see. Maximilian Teodorescu gives a clear return
on the cloud. It has become streaky in the east and west,and has succeeded in recording a pattern from the cloud gap to
the north pole side. You can also see the clouds and patterns in the video.
Images of Gary Walker and Mike Hood recorded desert colors west and south of Hellas. Hellas is whitish yellow. This situation
can be judged from the fact that the G and B images are bright. Since the dust can be seen in the upper right from Hellas,the original
circular shape is difficult to understand.
Even in the image of Niall MacNeill,the Noachis (335W~10W,-25~-30) area is clear and dark.
（by 14 observations; reported by Makoto Adachi)
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Plenty of contrast on show this morning,and I found Syrtis Major and Syrtis Minor to be the darkest Maria on the disc.
Mare Hadriacum curved round Hellas,with a smaller dark streak (Borbyses?) to its east.
Within south Hellas there was a faint darker region,presumably Zea Lacus?
Libya was bright and bounded by the faint arc of darker Casius / Nubius Lacus which stretched as far as the bright white NPH.
Aeria on the morning limb was very bright,as was Hellas.
A check with the W80a blue and the W58 green told me that the majority of the brightness was mist or cloud,
but that Aeria did show a hint of brightness in green light indicating a little dust near the limb.
There was a clear darker band around the SPC,then Thylle II looking bright,
and Mare Chronium curving right across the top of the disc,Eridania and Ausonia bright beneath.
A really lovely view and a pleasure to draw Mars in such stable conditions.
[Chris Nuttall : York,UK]
雲が多く、シーイングは酷く、なんとかＲＧＢを１回撮りましたが、直後に曇ってしまいました。
≪大阪府 枚方市 井上 修≫[Osamu Inoue. Hirakata-shi,Osaka,Japan]
Questa sera sono riuscito a riprendere anche Marte,registrando diversi interessanti dettagli:
lungo il terminatore,sulla sinistra,in basso si nota il maestoso rilievo del Monte Olimpo,salendo invece,
nella zona di Tharsis,ci sono delle irregolarit〓 chiare,forse nebbie? Salendo,il polo Sud ormai molto ridotto.
Tonight I managed to film Mars too,recording several interesting details: along the terminator,on the left,
below you can see the majestic relief of Mount Olympus,while climbing,in the Tharsis area,
there are some clear irregularities,perhaps fogs? Going up,the South Pole is now very small.
[Fattinnanzi Cristian : Montecassiano ITALY]
夕方から曇る傾向がきょうもあり、22時ごろまでは、観測できなかった。最初の観測は白雲を通しての観測で、コントラストが低く、見えづらかった。
2枚目以降はそれなりに気流がよくなり、よく見えた。しかし25時から快曇になった。
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≪滋賀県 大津市 安達 誠≫[Makoto Adachi:Siga Japan]
≪石川県小松市 大杉忠夫≫[Tadao Ohsugi:Komatsu city Ishikawa pre,Japan]
夏の良好シーイングは終わってしまったようで、厳しい火星となりました。
≪大阪府堺市 熊森照明≫[Teruaki Kumamori:Ohsaka Japan]
in excellent seeing. There are some clouds visible on the terminator in all filters. Adnoted on the blue filter image and seen in the animation.
[Maximilian Teodorescu:Dumitrana,Romania]
Here is a report of Mars performed last 01st september with the 150mm refractor.
Conditions were difficult,sky transparency to poor and very relative image stability.
Some brightnesses at the limb and the terminator can be subjected to a follow-up rather the brightest on the yellow and yellow green color channels.
[Stanislas Maksymowicz Ecquevilly,France]
[Dmitry W. von Aichegg : Domodedovo,Moscow Russia]
≪愛知県 春日井市 伊藤了史≫[Satoshi Ito. Kasugai City,Aichi,Japan]
Relatively clear. No discrete clouds.
[Gary Walker:Georgia:USA]
[Niall MacNeill : Wattle Flat,NSW,Australia]
比較的シーイングが良かった時間帯の画像です。
≪静岡県浜松市 山口貴弘≫[Takahiro Yamaguchi : Hamamatsu-City Shizuoka-Prefecture Japan]
This image features Hellas,Sinus Meridiani,and the shrinking SPC.
[Mike Hood : Kathleen Georgia,U.S.A.]
Good seeing. Syrtis Major,Elysium and Mare Cimmerium on view.
[Damian Peach: Loudwater,Buckinghamshire,United Kingdom]
[Johan Warell:Lindby:Sweden]
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