Re: Re: [APML] Epsilon 160 and 210 informations.

["Teïva Leroi" <leroiteiva@minitel.net>]

Jim and Chuck,
thank you for your help.
For you, a good apochromatic 100-130mm refractor will be better in use 
and results??
teiva
http://www.astrosurf.com/leroi



>Teïva,
>
>You will have noticeable vignetting with these scopes as the secondary 

>mirror is not nearly large enough to fully illuminate medium format. 
>Collimation is very critical too as it needs to be within a couples 
>thousandths across the film plane. It's possible, but not easy to do 
>when you have a focuser and two mirrors that all need to be aligned. 
>Focusing is probably the least of the problems.
>
>Chuck <aa6g@aa6g.org>
>
>--------------------------
>
>> Hi all,
>> I would like to have some informations about the takahashi epsilon 
160
>> (f3.3) and 210 (f3).
>> Is it possible to use medium camera (4.5x6 or 6x7cm) with these 
scopes?
>> Are focus and collimation easy to make?
>> Thank you for your answers.
>> teiva
>> http://www.astrosurf.com/leroi
>
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