From: "David Moorhouse" 
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Reply-To: "David Moorhouse" 


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I have two questions about an 18 point cell I'm thinking of building for =
a 16" x 1" plate glass mirror.=20

1.  Most of the dob floatation cells I've seen have two primary=20 mirror
adjusters at the top and the single one lower down where it=20 gets in the
way of the azmith encoders for DSC's. Is there any reason=20 not to put the
two adjusters at the bottom and the single on at the=20 top?

2. Does anyone have experience with wiffle tree edge supports for=20
mirrors? Are there any good web pages talking about them and any=20 tricks
of using them? Just that I REALLY don't want to use a sling at=20 all.

David Moorhouse
Auckland NZ


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I have two=20
questions about an 18 point cell I'm thinking of building for a 16" x
1" = plate=20
glass mirror. 1.  Most of the dob floatation
cells I've = seen have=20
two primary mirror adjusters at the top and the single one lower
= down where=20
it gets in the way of the azmith encoders for DSC's. Is there any
= reason=20
not to put the two adjusters at the bottom and the single on at the=20
top?2. Does anyone have experience with
wiffle tree edge =
supports=20
for mirrors? Are there any good web pages talking about them and any =

tricks of using them? Just that I REALLY don't want to use a sling =
at=20
all.David MoorhouseAuckland
NZ
 

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