火星 ALPO-Japan Latest

Mars Image 2023/04/16(UT)
眞島清人
Vicent Gonzalez Cebria,Stanislas Maksymowicz
K.Mashima,V.Gonzalez,S.Maksymowicz

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解説（安達）/ Comment by Makoto Adachi

穏やかな天候のわりにはシーイングは良くありません。

[眞島清人 : Kiyoto Mashima,Naha,Okinawa,Japan]

[Vicent Gonzalez Cebria:46600 Alzira(Valencia) Spain]

Here is a Mars report performed with the CC154mm and the 102mm refractor.
Images were good in both.
Through this 1,5H session, some events were noted through color filters.
The north cap is still visible (well white with a dark contour).
A south polar hood is there, visible with the red, yellow and blue filters, the more brilliant through the blue (a whitish polar hood).
The noachis zone is the more conspicuous through the yellow and red filters (a veil seems to turn with the ground, dusty?). 
The chryse-xanthe zone is well visible through all filters, more brilliant through the yellow and the blue (a veil is there seemsly a mist covering aurorae sinus).
A veil seems to appear at the limb near syrtis major, rather thin.
Hellas is there clear, visible through all the filters, the more through the yellow and the red suggesting a usual ground reflectivity brilliance.
The main features are in fact confidential mostly, it is represented on drawings with some albedo variations.
Taking into account the fact that syrtis major, mare erythraum, mare acidalium, the sinus sabaeus-pandorae fretum are the darkest feature,
It is noted to have lowered a syrtis major, a sinus sabaeus-pandorae, north area out of hellas, suggesting something is covering them, a thin mist as a first approach only.
Difficult to say more with regards to the means in use.
A more conclusive status would be using a 10-12" with the same level of seeing, that is not possible here.
This was a trial following my 6th april observation trying to extract some dusty event, the noachis area should be on survey.

[Stanislas Maksymowicz  Ecquevilly,France]

ALPO-Japan Latest Mars Section	2023/04/17
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