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Mars Image 2021/01/08(UT)
井上 修,三品利郎,石橋力,永長英夫,伊藤了史
Tiziano Olivetti,Chris Nuttall
O.Inoue,T.Mishina,T.Ishibashi,T.Olivetti,H.Einaga,S.Ito,C.Nuttall
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Click the link below to open the Comment（PDF File） by Makoto Adachi on a new page.
解説（安達）/ Comment by Makoto Adachi
強い冬型で風が強く非常に寒い日。シーイングも最悪を予想しましたが、良いとまでは言えないものの、案外まともでした。
≪大阪府 枚方市 井上 修≫[Osamu Inoue. Hirakata-shi,Osaka,Japan]
≪神奈川県 横浜市 三品利郎≫[Toshirou.Mishina:Kanagawa Japan]
冬型の気圧配置で、やはり気流が悪く、ピント合わせが不安です。
(Tutomu-Ishibashi Kanagawa-P Japan)
≪神奈川県 相模原市 石橋力≫
Under average seeing conditions.
［ティジャノ:オリベッティ バンコック タイ］
[Tiziano Olivetti : Bangkok Thailand]
[Hideo Einaga Kasai-City Hyogo-Prefecture Japan]
≪兵庫県 加西 永長英夫≫
≪愛知県 春日井市 伊藤了史≫[Satoshi Ito. Kasugai City,Aichi,Japan]
Despite the forecast saying clear all evening yesterday,
I was limited to a very brief gap in the clouds quite late on.
The seeing was fairly good with a sharp image but unfortunately
it wouldn't quite stand still and there was always some rippling motion present,
but it was at least sharp and I was able to look ‘through’ the rippling to some extent.
〓
I got the main features drawn in integrated light in the first few minutes and was immediately struck by the presence of
what appeared to be both polar caps on show simultaneously.
The NPC appeared large, extremely bright, and pure white with a very hard southern edge.
The SPC was minute (maybe too large in the drawing),
but easily seen despite being slightly affected by shading at the southern end of the terminator,
and looked very much like the cap remnant rather than a patch of cloud.
Indeed there seemed to be much less in the way of cloud bands encircling the south pole than I have seen over the last week.
〓
In addition to the presence of both caps, and the lack of bright bands of cloud near the south pole,
I noted widespread but very weak mist across much the southern hemisphere,
it was strongest at the evening limb, slightly greyish at the morning terminator,
and seemed quite uniformly spread with only minor variations in brightness. Additionally,
the contrast over Mare Erythraeum, Margaritifer Sinus, Aurorae Sinus etc seems quite low,
indicating that the mist possibly extended right across them too.
I also noted a band of mist to the south of Niliacus Lacus, possibly belonging to the NPH.
〓
I quickly recorded these observations before screwing a W21 filter into my binoviewer
with the intention of examining the suspected polar caps in orange light,
when the sky rapidly filled with thick cloud once again, and I was not able to continue.
[Chris Nuttall : York,UK]
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