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Venus Image 2012/06/04(UT)
Lorenzo Comolli,John Sussenbach,Manos Kardasis
L.Comolli,J.Sussenbach,Kardasis
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Lorenzo Comolli (150mm TOA stopped 100mm) |
While preparing the Venus Transit of 6 June 2012,I've imaged the planet Venus while approaching the Sun. This one is at 2°17' from the Sun center,and it was very difficult to obtain due to the extreme proximity of the Sun limb. Extreme care was due to avoid the Sun light entering the telescope.
I've observed from my observatory in the backyard of my home,in the city center of Tradate (VA),Italy. Observing conditions were very far from ideal: the seeing was very bad and transparency even worse due to continuous transiting of clouds.
The cusp extension was remarkable on June 4,while nearly invisible on June 2. Being the elongation of the two observations nearly one the double of the other,maybe a minimum angle for the cusp extension observation can be found between 3° and 4°.
Another very interesting observation is the limb brightening in the Southern hemisphere between 50° to 70° latitude. For confirmation,I've another image,obtained with a W25 filter (red),that shows the presence of the brightening in the same way. Tech data inside the image.
[Lorenzo Comolli,Italy +44d 38'54"N 09d 12'39"E]
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John Sussenbach(280mm SC) |
I show the cusps and full atmospheric ring visible on 2-4 June. The
other image shows the aureole of the Venus atmosphere briefly after the
third contact. It is visible as a thin arc of light that gets fainter when
the transit proceeds..
[スセンバッハ:オランダ]
[John Sussenbach:Houten,Netherlands]
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Manos Kardasis (280mm SCT ) |
It is remarkable that light can be seen around the planet....
[Manos Kardasis,Glyfada-Athens;Greece]
《カーダシス マノス:ギリシャ アテネ》
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