Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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G11 alti azimuth mod....
#3032718 - 04/08/09 06:42 PM Attachment (52 downloads)
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How to make a G11 into a Giro type alti azimuth mount....
My 10 inch is super stable.
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3032721 - 04/08/09 06:44 PM Attachment (38 downloads)
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Closeup....notice spacers are 1 1/4 adapters as shaft just happens to be 1 1/4.
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3032763 - 04/08/09 07:02 PM Attachment (40 downloads)
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A little better for detail....
Edited by Mr. Bill (04/08/09 07:23 PM)
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Jim7728
Postmaster
Reged: 04/10/05
Loc: Stoop Landing Observatory, NYC
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3032818 - 04/08/09 07:35 PM
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Nice mod there, Bill!
Where's the DEC assembly? 
Did not know the mount could turn on it's base. 
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Jim7728]
#3032833 - 04/08/09 07:46 PM Attachment (37 downloads)
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Quote:
Nice mod there, Bill!
Where's the DEC assembly?
Did not know the mount could turn on it's base.
Here's the rest....
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Jim7728
Postmaster
Reged: 04/10/05
Loc: Stoop Landing Observatory, NYC
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3032901 - 04/08/09 08:30 PM
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Nice! 
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Jim7728]
#3038218 - 04/11/09 02:53 PM Attachment (34 downloads)
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Final version with 21 pound counterweight and cut down shaft.....
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Jim7728
Postmaster
Reged: 04/10/05
Loc: Stoop Landing Observatory, NYC
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3039458 - 04/12/09 09:48 AM
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Very nice!
Two mounts out of one.
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Jim7728]
#3040820 - 04/13/09 01:25 AM
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Quote:
Very nice!
Two mounts out of one.
I took an eq mount that had been sitting around gathering dust and turned it into two very servicable alti azimuth mounts that can each easily handle 35 pound loads.
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3068930 - 04/26/09 06:31 PM Attachment (33 downloads)
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Two mounts for the price of one.....
All the pieces of the G11 side by side.
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Gord
Carpal Tunnel
Reged: 01/06/04
Loc: Toronto, ON, Canada
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Re: G11 alti azimuth mod....
[Re: Mr. Bill]
#3070329 - 04/27/09 11:46 AM
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That's a cool setup. How does the one carrying the 10" rotate in azimuth? Did you have to make some sort of bearing for the top of the pier?
It's a nice option for being able to stand an observe, as opposed to sitting with a dob.
Thanks,
-Gord
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Mr. Bill
Postmaster
Reged: 02/09/05
Loc: Northeastern Cal
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Re: G11 alti azimuth mod....
[Re: Gord]
#3070510 - 04/27/09 01:09 PM Attachment (29 downloads)
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The azimuth bearing is stock....simply removed the azimuth lockdown knobs and azimuth adjustment worm.
Bearing surfaces are metal-metal....was going to put a piece of Telfon between but the surfaces are machined smooth enough and the weight is distributed fairly equally between the scope and the counterweight that it turns extremely smooth and the right amount of drag without modification.
Incidently, the motions are well balanced... that is the same effort is required to move both axis.
Edited by Mr. Bill (04/27/09 01:20 PM)
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