金星 ALPO-Japan Latest

Venus Image 2023/08/21(UT)

Stanislas Maksymowicz,Detlev Niechoy
S.Maksymowicz,D.Niechoy

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Here is a venus report using the 80mm refractor under a transparent sky.
Not racing an intensity level1,nevertheless coloring was actually present,dark red well affirmed near the terminator spreading on half the DS surface and then progressively to a greyish tint toward the DS limb.
No defined contour at the DS limb,no lighted arc,no cusp extension noted with all conditions,filter and magnification.
The light intensity of the DS surface was substantially fainter than those noted with the other filters.
In addition to the sketches,investigation was completed with:
W11 filter: same intensity than the intensity noted in IL,and clearer than the back ground sky.
W12 filter: same intensity than the intensity noted with the W58,the surface brightness was more uniform.
IL at 11H00UT 121x: greyish DS,an intensity gradient from terminator beyond the DS limb,same dark markings,no cusp extension. Anyway remained this dark red tint near the terminator on DS.
A very good observation globally.

[Stanislas Maksymowicz  Ecquevilly,France]

[Detlev Niechoy : Goettingen,Germany]

ALPO-Japan Latest Venus Section	2023/08/22
	2023/08/20