木星 ALPO-Japan Latest

Jupiter Image 2022/04/24(UT)

Jose Luis Pereira,Antonio Cidadao
J.Luis,A.Cidadao

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Newtonian Telescope 275mm f/5.3 + NEPTUNE-CII +  Barlow Siebert 3,5x + IRUV Cut filter.

[Jose Luis Pereira :Sao Caetano do Sul/Sao Paulo/Brasil]

Callisto was in transit on the 24th (arrows) and GRS and BA were visible on the 25th images.
IR850 and SLOAN z'-s' filters already produce daylight useable images, the SLOAN Y' filter 
and the narrower 1000nm/20nm "weak" CH4 filter are at the borderline (the 890nm CH4 filter needs to be used with darker skies).
NEBs dark features are seen near CM on both image sets, with a (two?) bright NEBs cloud  on the 24th images.
The visibility of the large NEBn barge was faint with these IR filters, but I think that was expected.
Numerous STB dark spots are seen on April 24 images. A dark IR band is also seen in EZ (from CM to the p limb).

≪アントニオ  シダダオ  ポルトガル≫
[Antonio Cidadao  Oeiras - Portugal]

ALPO-Japan Latest Jupiter Section	2022/04/25
	2022/04/23