火星 ALPO-Japan Latest

Mars Image 2023/04/07(UT)

Javier Beltran Jovani,Manos Kardasis,Mike Karakas,Paul G. Abel,Dmitry W. von Aichegg,Gregory.T.Shanos
Javier,Kardasis,M.Karakas,P.Abel,Dmitry.W,G.T.Shanos

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
Javier Beltran Jovani

[Javier Beltran Jovani:Castellon-Spain]

Manos Kardasis
Channels pesented separated for inspection of the possible blue clearing:

[Manos Kardasis,Glyfada-Athens;Greece]
《カーダシス マノス:ギリシャ アテネ》

Mike Karakas

[Mike Karakas : Winnipeg Canada]

Paul G. Abel
To begin with the seeing was fair but it did drop off about half way through.  The apparent diameter of Mars is now quite small- some 6.2",and requires high powers to see anything meaningful.  A number of details were seen:
・The whole of the preceding limb was very bright suggesting the presence of evening clouds
・There was a brilliant patch from the prec. limb extending onto the disk- this was possibly bright clouds in the Argyre I basin.
・Mare Erythraeum contained some structure and seemed to be darker in its south-prec region.
・Solis Lacus can be seen although it now lacks the complex structures seen earlier in the apparition when Mars was closer.
・Aurorae Sinus was rather darl- perhaps the darkest feature on the disk.  I was surprised to be able to see Ganges and a brightness in Ophir and Candor.
・To the north,Acidalium can be seen and Nilokeras.
・There seemed to be a fainter Lowell band around the north polar cap which was quite bright.

[Paul G. Abel:Leicester:United Kingdom]

Dmitry W. von Aichegg
2023/04/07 18:46(UT),Seeing 6/10  Trans 5/5

[Dmitry W. von Aichegg : Domodedovo,Moscow Russia]

Gregory T.Shanos
Mars is exhibiting blue clearing.   See attached images.   I am taking a luminance image with a UV-IR cut filter, then a blue clearing image with a UV-IR cut filter and Violet #47 filter, and with the blue filter in the RGB filter set.  The blue images appear identical to the luminance image- blue clearing of 3.   The blue normally is not this transparent, and the albedo features are not readily visible.   
I encourage everyone to please image Mars to confirm blue clearing.   Manos Kardadis has observed this phenomenon in his images.   Thank you Manos.


[Gregory T.Shanos : Sarasota,Florida,USA]

ALPO-Japan Latest Mars Section
2023/04/08
2023/04/06