金星 ALPO-Japan Latest
Venus Image 2020/06/01(UT)
Gido Weselowski,Zsolt Kereszty,Stanislas Maksymowicz,Ferenczi Imre,Didier Favre,Martin R Lewis,Detlev Niechoy
G.Weselowski,Z.Kereszty,S.Maksymowicz,Ferenczi,D.Favre,Martin.L,D.Niechoy
[Gido Weselowski : Bocholt,Germany]
[Zsolt Kereszty : Corona Borealis Observatory,Hungary,Gyor]
Here is a report performed with the R76mm under good images on best〓moments and operated under a transparent sky.
No bright spot.
AL was more than suspected with the polar filter,full dark side,as shown,〓 with 60/88x magnification,planet heigth〓37°,also with〓 a marked dark orange tint well noted near the terminator and away. Cusp extension was evaluated to〓be more suspected at south and north with britghter〓limb portions on dark side.
South cusp extension〓was the biggest as shown.
Dark markings on the AL light was there,〓seemed〓not typically tilted in correlation with the cusp extention,but seems converging to the dark side center.
The light intensity on dark side was degrading from〓terminator〓towards the dark side limb,full extension with the polar filter and without,at 60x/88x magnifications,the intensity was almost reaching a L1 〓(3 the highest) .
Turning the polar filter by 90° extincted〓the light level to a reduced level intensity and extention〓to half of the dark side,so not null,the variation of light remained〓subtil but well noted,its extention〓limited to half of dark side.
No time for inserting the color filters,the edge of the roof was used for occulting the sun (3.4°E elongation).
I will try to-morrow,same procedure but a planet phase of 0%. Will see.
[Stanislas Maksymowicz Ecquevilly,France]
[Ferenczi Imre,Budapest - Magyarorszag HUNGARY]
One facebook member,Elias Chasiotis suggest me to send you my last picture of the Venus atmospheric ring taken from France
with my Takahashi FC100 D Scope refractor.
Could it be the ring of fire that unites Venus with the Sun?
I do not remember having struggled so much to make an astronomical image.
From sunrise we felt the possibility of doing something interesting but as soon as the instrument was directed towards Venus,
a lot of diffusion appeared in the field of vision because of the numerous dusts and pollens in suspension.
However,moving the instrument,we felt the texture of the planetary disc very slightly nuanced compared to the background of the sky.
However,impossible to distinguish the ring on a single film but yet,at times,one has the impression that it is taking shape.
It took patience and waiting for the star to rise gently above the horizon.
The sky then became more and more coronal but it is necessary to work at more than 100 fps to freeze the turbulence which does not help the task.
The tips,limits of the incomplete atmospheric ring,seem to elongate but still nothing visible to the naked eye.
It is then necessary to overexpose the pictures to extend and close the ring,if it is present. On a single film,
still nothing but an extremely weak signal seems to betray the presence of the phenomenon.
So I make a whole series of films of which I will pile up the final images hoping to obtain what I seek.
The ring can now be guessed,so I try a last series of films to accentuate his vision.
Alas,the Sun,because of the angular proximity of Venus (barely 2 °) is already present in the instrument illuminating the sensor too much.
This puts an end to the shooting series that I started on April 26 but I put it back from June 6 if the weather permits. While waiting,
I share with you this result that I have learned from this adventure.
For once,not unhappy with me,because it is a first for me. Astronomically!
[Didier Favre : Bretigny-sur-Orge,France]
I just realised I hadn sent out all my Venus images from the recent evening apparition.
Please see attached taken in various conditions. Details on the images.
1000nm images were taken with 444mm scope at f4.4 and ASI174MM camera with Edmund Optics 1000nm filter with 25nm bandpass
[Martin R Lewis: Hertfordshire United Kingdom]
[Detlev Niechoy : Goettingen,Germany]
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