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Mars Image 2021/04/22(UT)
伊藤了史,森田光治,栗栖 茂,近内令一
Paul G. Abel
S.Ito,M.Morita,P.Abel,S.Kurisu,R.Konnai
下記リンクをクリックにて安達氏のコメント(PDFファイル）が開きます。
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
≪愛知県 春日井市 伊藤了史≫[Satoshi Ito. Kasugai City,Aichi,Japan]
ひどいシーイングで、辛うじて1枚処理できたに過ぎない。詳細は不明。
≪滋賀県守山市 森田光治≫[Mitsuji Morita:Siga Japan]
Attached is an observation of Mars I made yesterday in excellent seeing.
The drawing was made at a power of x600 with very good definition.
Although conditions were good,the Martian disk is now very small and subtends only 4.8" in apparent diameter.
As a result,it is becoming increasingly difficult to see anything but the most striking features on the disk. Points of interest include:
・Solis Lacus can be seen to the far south- the feature is now at the top of the disk as Mars increases its northerly tilt.
・The Phrixi region seemed to be quite dark and was possibly the darkest feature on the disk.
・The very edge of Sirenum can just be made out on the morning side of the disk.
・There seemed to have been a bright cloud on the prec. limb (possibly clouds over Chryse)
・Some vague shadings present in the deserts to the north.
・NPC again observed with a Lowell band.
[Paul G. Abel:Leicester:United Kingdom]
6min.derotation CM:323.3,
Celestron C11(279mmSCT) F48,ZWO ADC ASI462MC IR/UV cut
シーイングは非常に悪くボケボケです。
[Shigeru Kurisu,Mitoyo Kagawa,Japan]
Being a bit late, but I am attaching here an IR Mars image from 22 April session under almost hopeless,
better drink and go to bed seeing condition.
Just managed to squeeze out some detail by stacking 2% from 230 thousand frames captured with minimal ROI,
1 msec exposure, average FPS 774 at the prime focus of 41cm F/10 SCT.
Major albedo features and(probably) NPS are recognizable.
火星像アメーバ過激蠕動の絶望的気流でしたが、直焦IRで最小ROIで露出1msec、
平均FPS 774、23万フレームキャプチャーから2％スタックしたら高速タコ踊りの動画からメジャー暗色模様や、
多分北極冠が出てきたのには驚きました。
残念ながら火星からはそろそろ撤退です。皆様のご健闘をお祈り申し上げます。
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