Re: [APML] R200ss Prime Focus problems

["Shekhar Borde" <shekhar@borde.org>]

I'm pretty sure you don't need to touch the mirror.  Are you using a 
non-standard (i.e., higher profile) T-ring?  What SLR are you using?  
Is is one of the usual ones?  Are you sure that your film plane isn't 
so far behind that you cannot reach focus even with a standard T-ring.
Try borrowing an OM-1 with a standard T-ring and test to see if you 
still cannot reach focus.

If your SLR is not the problem, your T-ring might be.  You might 
consider getting the Direct-Wide Photo adapter for this scope.  It has 
a lower profile and has a wider mouth that (almost) eliminates the 
vignetting you get with a standard T-ring.  The photo adapter also
lets you easily adjust the camera angle.  An accessory well worth it's
cost, IMO.

Shekhar

> I have recently received a used Orion/Vixen R200SS and last night (first 
> light) tried SLR prime focus with it. I could not get it to focus with 
> the original 1 1/4" adapter (2 1/8" high). I removed it and was able to 
> focus it with about 1/8" of the top of the existing focuser.  I know I 
> should move the primary about 1" up in the tube. Is this what everyone 
> else that has this telescope has done? or am I missing something.
> any suggesting would be appreciated.
> Thank
> Mike
> 
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