Re: Correction - Mach1GTO with Celestron CGE tripod
Dear Edd,toggle quoted messageShow quoted text
You should not remove the center positioning pin of the 900 plate. It is needed to keep the mount centered when you are making your azimuth adjustments. If you remove it, the mount will shift around when you turn the azimuth adjustment knobs and you will pull your hair out in frustration.
11250 Forest Hills Road
Machesney Park, IL 61115
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From: ap-gto@... [mailto:ap-gto@...]On Behalf Of eddwen2001
Sent: Tuesday, August 21, 2007 4:46 PM
Subject: [ap-gto] Re: Correction - Mach1GTO with Celestron CGE tripod
Just had a chance to review my gear.
The CGE tripod presents a top surface of 5.490" diameter x 0.94" high
above the leg top hinge surface. There is a tapped center hole for
the tripod tensioning draw-bolt (bolt does not need to protrude above
the top surface). There are 3 each 0.38" dia. cast-in holes on a
4.00" diameter bolt circle.
The AP900 pier adapter plate is 0.975" total thickness. The bottom
of the plate has a counter-bore ~6.63" dia. x 0.675" deep, leaving a
central plate thickness of 0.30".
I drilled and tapped 3 each 3/8" x 16 holes at 120 degrees in the
3/8" x 16 x 1" long bolts, used with suitable lock washers, will
solidly retain the plate to the tripod without the bolts protruding.
It is necessary to either shorten, back-off or remove the center
0.495" dia. positioning pin of the 900 plate.
The 900 is then conventionally mounted on the plate.
--- In ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com, "eddwen2001" <Eddwen@...> wrote:
the CGE tripod may need to be trimmed if you want to keep the .495I
mountsimply tapped a few holes in the 900 adapter plate to match theholesholes in the CGE plate. The CGE top plate is a casting with theplate.in place so there is no easy way to modify it to match the 900I assume you can do similar with the Mach 1.Thanks, we'll have to look into that.