金星 ALPO-Japan Latest
Venus Image 2020/04/15(UT)
Stanislas Maksymowicz,Volker Heesen,Paul G. Abel,Frank J Melillo,Martin R Lewis,Detlev Niechoy
S.Maksymowicz,V.Heesen,P.Abel,Frank,Martin.L,D.Niechoy
under average good images.
Conspicious polar caps bordered by a dark collar were noted,
an overall banding pattern was noted also,
AL was suspected only for blue light,bright spot was not collected.
For featuring an almost difficult observation.
[Stanislas Maksymowicz Ecquevilly,France]
North is up in all images. Surprisingly prominent dark bands visible with W47 (violet) filter;
position of dark equatorial band uncertain though; small bright spot near limb.
For the first time,definite atmospheric features could be seen with W25 (red) filter;
although contrast was low,they were better defined than with the W47 filter,
possibly due to higher image brightness and improved sharpness.
With the W12 (yellow) filter,a bright region at the southern limb was suspected.
[Volker Heesen : Hamburg,Germany]
Seeing was rather poor,and the cloud markings were elusive (although I think this is more to do with Venus than the poor seeing).
Two dusky streaks were present. Other points include:
Bright Limb Band: Visible and complete
Terminator: Geometrically regular
Cusp Caps: Both very bright but once more I felt that the southern cusp was larger and brighter.
Cusp Collars: Both present and about equal.
[Paul G. Abel:Leicester:United Kingdom]
[Frank J Melillo Holtsville NY U.S.A]
[Martin R Lewis: Hertfordshire United Kingdom]
[Detlev Niechoy : Goettingen,Germany]
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