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Venus Image 2009/01/09(UT)
Jean Jacques Poupeau,David Arditti,Willem Kivits
J.J.Poupeau,D.Arditti,W.Kivits
|
Jean Jacques Poupeau (350mm Cassegrain) |
[Jean Jacques Poupeau : Pecqueuse France]
[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]
|
Willem Kivits(C14 350mmSC) |
Use has been made of a special UV Barlow (UVB) witch has been
designed by Mr. Harrie Rutten, an internationational well known optical
designer . He did this for Mr. Arnaud van Kranenburg, also from the
Netherland, who asked Harrie to find a solution for his C9.25 concerning
the abberations in the UV, which have all SCT's. So Harrie developped
this very special Barlow to correct for this abberations and thus
sharpening the Venus images considderably. Mr. Herman ten Haaf
from the Netherlands did the very fine hardware on this UVB and I
myself have this UVB from Arnaud for loan to test it on my C14.
Alltough the UVB has been designed to match the C9.25 and is not
exact perfect for my C14, my experiences with it are that it workes
quite well on my scope aswell. Sharp focusing is possible with it,
wich is not possible without it, due to the abberations in the UV.
In and out focus tests on stars also show clearly the improvement
with the UVB.
Unauthorized use prohibited
無断使用禁止
[キビツ:オランダ]
[copyright(c)2006 Willem Kivits:Siebengewald Netherlands]
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