Re: [APML] Suggested Astrophoto Accessories for Vixen VC200L

["John C. Mirtle" <spampit@shaw.ca>]

Bill,

----- Original Message ----- 
From: "William R. Mattil" <wrmattil@ix.netcom.com>
<- snip ->
and its free. My Cassegrain has only a 1.25 inch focuser and due to this
excessive length (yes the rear spacing is within spec .. speaking of
which can anyone comment on the Vixen here ? Is the primary moveable to
adjust the rear spacing ?) there seems to be a tendancy for this to want
to sag a bit. So I have to be extra careful in tightening things down.


The VC200L primary is - as far as I can tell - pretty much fixed. There
might be a 1/4" of movement in the push/pull cell, but I don't want to find
out. :-) I am assuming that it is not meant to be moved. Your focuser looks
similar for back-focus. The focuser drawtube (62mm ID - BTW, or 2.4") sticks
out about 1.25" above the focuser body with a NEG and OM1. The lock knob on
the focuser is very positive, nothing sags or droops.

John Mirtle
Calgary, Ab. Canada

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