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Mars Image 2021/03/24(UT)
三品利郎,伊藤了史,石橋力,安達 誠,永長英夫,近内令一
Stanislas Maksymowicz,Zsolt Kereszty,Chris Nuttall,Paul G. Abel,Carsten Bauer,Simon Kidd,Rudolf A.Hillebrecht
T.Mishina,S.Ito,S.Maksymowicz,Z.Kereszty,C.Nuttall,T.Ishibashi,M.Adachi,P.Abel,H.Einaga,C.Bauer,R.Konnai,S.Kidd,R.A.Hillebrecht
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解説（安達）/ Comment by Makoto Adachi
≪神奈川県 横浜市 三品利郎≫[Toshirou.Mishina:Kanagawa Japan]
≪愛知県 春日井市 伊藤了史≫[Satoshi Ito. Kasugai City,Aichi,Japan]
Here is a mars report performed last 24th march with the 102mm refractor under almost fixed images at the beginning of the session.
The brightenings noted are very similar to those noted the evening before.
The disk color of the planet was typically mars orange!
[Stanislas Maksymowicz Ecquevilly,France]
[Zsolt Kereszty : Corona Borealis Observatory,Hungary,Gyor]
The NPC was defined as a more or less straight line across〓the bottom of the disc.
A band of blueish hood overlying the cap and the grey land to the south.〓
The hood extended up the terminator on the morning〓side and then doubled〓back to〓form bands of morning mist along the northern,
and southern shores of Chryse.
At times there seemed to be a little bright island at Aram in between Oxia〓Paulus,Margaritifer,and Sinus Meridiani,
this may have been a contrast illusion caused〓by the three darker patches appearing to be joined by a sort of ring of faint dusky extensions,
or it may have been a little patch of mist in the middle of them. I honestly couldn't tell as it was so small.〓
Morning mist / SPH at the terminator in Argyre.
The equator looked light across Aeria/Moab.
Syrtis Major and Hellas were just about visible as strips of dark and light at the limb.
[Chris Nuttall : York,UK]
気流が悪く、南半球が暗いとしかわかりません。
(Tutomu-Ishibashi Kanagawa-P Japan)
≪神奈川県 相模原市 石橋力≫
シーイングは良かったが、薄曇りで透明度が悪く、条件としては
悪かった。
--------------------------------------------------------------
≪滋賀県 大津市 安達 誠≫[Makoto Adachi:Siga Japan]
Attached is an observation of Mars made on 24th March in very good seeing.
I decided to experiment with some different eyepieces and found that a power of x500 allowed a reasonable disk size with enough contrast to pick up the fine features:
・SPR again quite bright.
・Hellespontus can be seen on the prec. limb. Noachis and Argyre seemed to be fairly bright.
・Pandorae Fr. was visible and distinct from the Deucalionis Regio. Sinus Meridiani also quite dark.
・Erythraeum again showed some interesting features but of particular interest tonight for me was the apparent faint extension
from Margaritifer Sinus to the dark extension from Niliacus Lacus (Indus?). At x300 and x375,the disk is too small to see it,
and at x600 I think the contrast is too low and it is easily missed,but at at x500 it does seem to be visible.
・Acidalium again well placed although its following end seemed to fade into white clouds on/near the NPC.
・NPC bright - thin band immediately south of the cap visible once more.
[Paul G. Abel:Leicester:United Kingdom]
ようやく北極冠が見えだしてきました。
ここ数日来それらしき画像を得ていましたが、確信が持てていませんでした。
24日は10h15ｍ(UT)前後の3連続した画像に、25日には10h05ｍ(UT)頃からの連続5画像に確認できました。
De-rotaionすると北極雲で白飛びしてしまい、極冠が埋もれてしまいますね。単画像のままの方がよく分かります。
[Hideo Einaga Kasai-City Hyogo-Prefecture Japan]
≪兵庫県 加西 永長英夫≫
Chryse a bit less bright than the previous day. The region Eden/Moab/Aeria changes its appearance with rotation,prob. an effect of
different illumination incidence. But G & B image also might indicate dust a/o clouds.
In the south,there is bright Hellas at the preceeding limb. Haze over
Argyre seems more distributed.
[Carsten Bauer : Frankfurt,Germany]
Attached a Mars IR image from the 24 March session under rather poor seeing condition. Visually (X800),
the desert area wore strong reddish hue,and the dark features showed rather remarkable contrast.
NPC suspected along the northern limb though uncertain.
Elysium Mons was at 11am local time,afternoon orographic cloud might have started forming? Worth trying B light imaging?
3月24日のIR像です。シーイングはさほど良くありませんでしたが眼視800倍である程度傾向がわかりました。
砂漠地方の赤色味は強く、暗色模様のコントラストもかなり高い。像の北縁に北極冠が見えるような気もしましたが確実とは言えません。
Elysium Monsは現地時間で午前11時過ぎですから山岳雲が発生し始めてもおかしくないかかと思いますが赤外では沈むのでB光モノクロで試したいところです。
<<福島県石川郡石川町 近内令一>>[Reiichi Konnai : Ishikawa Gun,Fukushima,Japan]
Another Mars image, with a comparison to the one on 21-03-21.
The cloud in Argyre seems to have dispersed and moved North a little?
Also two bright patches E of Mare Acidalium seem confirmed in the second image, ...possibly clouds?
[Simon Kidd: Welwyn Herts,United Kingdom]
Just before weather changes again I could aquire these three images of Mars. Sinus meridianii rotating into sight an still resolved.
Some distinct cloudiness over Hellas, maybe even dust involveld because of the yellowish color in the last image.
NPH small but easily visible. Clouds over the Argyre region in the last image.
[Rudolf A.Hillebrecht: Bad Gandersheim,Germany ]
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