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KennyJ
Reged: 04/27/03
Posts: 10142
Loc: Lancashire UK
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Re: Moon in the Takahashi Astronomer 22x60's
06/16/08 06:02 PM
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My good friend Brian ( CN member Medinabrit , currently otherwise engaged ) also has the Takahashi 22 x 60 ( along with some other excellent binoculars and APO scopes ) and he is the first to admit that it is a " specialised instrument " , but one that does what it does WELL , better than ANY other instrument he has , or has tried -- and that is a more impressive list than he would probably care to admit to in detail , here ! :-)
At risk of throwing a little spanner in the works here , I feel obliged to add that THROUGH MY EYES , in certain daytime viewing conditions , looking at certain combinations of objects , even true APO objectives , per se , DO NOT COMPLETELY eradicate chromatic aberration .
I would go so far as to suggest " far from it ".
The more time I spend trying to eradicate annoying C.A from my views , however slight , the more I'm inclining towards a belief that it is at least as related to focal ratio as it is to lens configuration and absence of exotic materials from the objective lenses .
Kenny
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Two eyes and a preference to use both
Zeiss 7 x 42 BGAT
Captain's Helmsman 7 x 50
Nikon 10 x 42 Superior E
Swift Audubon Kestrel 10 x 50
Helios 15 x 70 Observation
Strathspey 20 x 90
Televue 76 APO
Zeiss 85 Diascope
Helios 102 f5 refractor
Various eyepieces barlows tripods mounts etc.
Panasonic Lumix DMC - TZ5 digital camera
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