金星 ALPO-Japan Latest
Venus Image 2020/05/20(UT)
柚木健吉
Stanislas Maksymowicz,Zsolt Kereszty,John Sussenbach,Paul G. Abel,Christian Viladrich,Jonathan Christopher Nicholl,Peter Edwards,Ethan Chappel,Detlev Niechoy
K.Yunoki,S.Maksymowicz,Z.Kereszty,J.Sussenbach,P.Abel,C.Viladrich,J.C.Nicholls,P.Edwards,E.Chappel,D.Niechoy
白昼のＵでの撮像はAstroDon UVではコントラスト・ノイズ何れも良くないため、IDAS BE410を使ってみた。
[Kenkichi Yunoki (Sakai City,Japan)]
≪大阪府 堺市 柚木健吉≫
Here is a report performed with the R76mm under very good images on best〓moments and operated under a relative transparent sky.
A sign of cloud pattern was collected with some difficulty,boths cap〓not conspiscious〓clear,〓caps being probably faded by the planet tilt axis and more by planet phase,no bright spot.
AL was more than suspected with the YG,B,almost full dark side,as shown with R and without filter and with polar filter exhibiting the full dark side,〓 with 76x/88x magnificationx,planet heigth〓48°,also with〓 a faint marked light yellowish tint well noted near the terminator. Cusp extension was evaluated to〓be a little more than the phase.
Dark markings on the AL light was there (as drawn carefully,the same for each filter in use).
The light intensity on dark side was degrading from〓terminator〓towards the dark side limb,partial extension with the YG,B filters,〓 using polar filter,R and no filters on full dark side extention,the intensity was reaching a L1 〓(3 the highest) .
Turning the polar filter by 90° extincted〓the light level to a reduced level,but not null,as already reported on 15th,16th,17th,18th and 19th,the variation of light remained〓subtil but well noted,its extention〓limited to the dot line on the dark side.〓
At the best angle for the max transmission,extention〓was full dark side with the collected dark markings.〓
Using the 88x magnification the AL light filled also fully the dark side sothat〓the occulter test was tried as reported. Dark markings on the un-occulted dark side were the same with 72x (K25 plus barlow),dark marking were absent on the background sky around the planet.
AL light intensity is not growing since days,reaching L1 level on the 23rd april,the maximum observed,here as intense than this 23rd april and 19th may,the polar filter giving the more discriminatable〓light on the dark side when rotated at the best angle with full dark side extention,and dark markings presence.
The seeing was degrading after 16H40UT.
[Stanislas Maksymowicz Ecquevilly,France]
[Zsolt Kereszty : Corona Borealis Observatory,Hungary,Gyor]
[スセンバッハ:オランダ]
[John Sussenbach:Houten,Netherlands]
At x100 I had a very splendid view of the thin crescent and I believe I may have glimpsed faint short cusp extensions- the northern one may have been more prominent.
Bright Limb Band: Visible and complete?
Terminator: Geometrically regular
Cusp Caps: Not seen,Cusp Collars: Not seen
Cusp Extensions: 3°
[Paul G. Abel:Leicester:United Kingdom]
The only one where possible features might actually be visible is the one taken on May 20.
Feature positions seem in line with WinJUPOS simulation.
[Christian Viladrich : Jongieux,France]
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Jonathan Christopher Nicholls | |
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VENUS at 6.5% phase illumination 2020/05/20 21:40:00(UT)
200mm Newtonian : skywatcher f5,5x Barlow lens,LUMIX DM1 Mirroless DSLR
Seeing 7/10 Trans 9/10
[Jonathan Christopher Nicholls : Derby,United Kingdom]
[Peter Edwars: West Sussex United Kingdom]
[Ethan Chappel Cibolo,Texas,United States]
[Detlev Niechoy : Goettingen,Germany]
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