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Mars Image 2007/11/04(UT)
畑中明利
Bruce Worsley,Donald C Parker,Paulo Casquinha,David Arditti,Pete Lawrence,Ethan Allen
B.Worsley,A.Hatanaka,Don,P.Casquinha,D.Arditti,P.Lawrence,E.Allen
解説（安達）
Donald C Parkerの画像には、興味深い雲が写っている。アカディヌス
（Acadinus;52W,+41）の位置に白く小さな雲が写っている。この雲は、よく発生
する位置に出現している。また、ニリアカスラクス（Niliacus Lacus；30W,+30)
付近がダストに覆われていると報告している。Paulo Casquinhaの画像では、そ
のダストの様子がよく分かる。クリセ（Chryse；33W,+10)とニリアカスラクス
（Niliacus Lacus；30W,+30)が覆われている。Pete Lawrenceの画像は、特徴を
よくあらわしたすばらしい画像だ。
(reported by 6 observers)
Interesting clouds are reflected to the image of Donald C Parker. Small
white clouds are reflected to the position of Acadinus (52W,+41). This
cloud has appeared in the position generated well. Moreover,it is
reported that near Niliacus Lacus (30W,+30) is covered with dust storm.
By the image of Paulo Casquinha,the situation of the dust is known well.
Chryse (33W,+10) and Niliacus Lacus (30W,+30) are covered. The image of
Pete Lawrence is a wonderful image which expressed the feature well.
(reported by 6 observers)
FROM Makoto Adachi
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|
Bruce Worsley(SC-8 203mmSC) |
07/11/04 7:30 U.T.
SC-8" (203mmSC) F/30 3X Tele-Vue Barlow
Meade LPI camera. No Filters
Seeing 4-5 Trans 3-5 Very Windy.
[ Bruce Worsley : Cooper City,Florida U.S.A]
|
Akitoshi Hatanaka (400mm Cassegrain) |
今日も、撮影を始めた直後（3枚撮影）後雲に隠れてしまった。
アマゾン平原に白い小さな塊の様なものが有る様だ、雲か？
近赤外像を、見る限り北極フードの下には、北極冠らしきものは写ってない様だ。
近赤外像に、ユートピア平原とユートピア平原からイシディス平原にかけて、
白い帯状の模様が写っている。可視像ではハッキリしないのだが？
≪三重県熊野市 畑中明利≫
|
Donald C Parker(16-in (41cm) Newtonian) |
I have attached some Mars images from 4 November. Very poor seeing. Nialacus appears to be covered by dust.
The NPH is fragmented with bright areas,possibly dust.
[ Donald C Parker Coral Gables,Florida U.S.A]
|
Paulo Casquinha (C14 355mmSC) |
Mars in fair to good seeing.
Note the cloud structure on the NPH and the bright spot,is it the NPC ???
(site: 38.567 N /8.933 W Alt 124 m)
[Paulo Casquinha Palmela,Portugal]
I was continuing to experiment with different methods of filtration here. For some years I have been using a technique copied from Dave T and Damian of using a non-IR blocked red filter in combination with IR-blocked G and B filters. I thought I would try to establish if this really was the best technique by taking separate sets using these filters with and without an overall IR blocker over the top of them.
My conclusion: there is very little in it,but perhaps some subtlety of detail and shading is lost by allowing the IR into the R channel. The IR component increases the overall signal,and increases contrast,but excluding it perhaps gives a more "natural" result.
I have decided to start giving links rather than sending these big collections of images themselves. However,tell me if you find less inconvenient than the previous system.
Images with IR inclusive reds
Images with IR totally blocked
[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]
|
Pete Lawrence(LX200 250mm SC) |
Catching up with some Mars sequences taken at the start of November,here's one of Mars taken on the 4th under good seeing.
[Pete Lawrence: United Kingdom]
|
Ethan Allen12" (305mm) Newtonian |
[ Ethan Allen Sebastopol,California U.S.A.]
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