Re: ATM respacing Paracorr

[Andy Saulietis <iss@pvtnetworks.net>]

Bratislav writes,

>My guess is that new variable height is to do with so many eyepieces
>having focal plane all over the place relative to the bottom flange (even
TeleVue 
>themselves); so for a good correction one needs to move the eyepiece to a
>proper position.

When I built a couple of 4 position Eyepiece turrets,
they both incorporated a built-in Paracorr. I used a
20mm Nagler to define the nominal location of the Paracorr
based on Al N's input that this occurs with this eyepiece
flush against the Paracorr's surface with the T-mount 
eyepiece adapter in place. The other 3 eyepieces were then
parfocalized with the 20 at focus.

One of the PC's was moveable axially for fine focus,
the other moved the entire turret/Paracorr assembly.



 
Andy Saulietis
ISS Enterprises
39 Silver Fox Trail
Mayhill NM 88339
505-687-3067 voice
505-687-3021 fax, call voice or e-mail to set up
e-mail: iss@pvtnetworks.net