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Wood alt-az mount for my 6" refractor

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#1 Chase McNiss

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Posted 13 July 2009 - 11:45 AM

Decided to build a wood alt-az mount to carry my AstroTelescope 152mm f5.9. Works great for widefield viewing up to 112x. Having the eyepiece angle remain constant means adjusting the Dioptrx on the 26 Nagler less often. Setup is very quick despite the 30lbs of counterweights.

Cheers
Chase

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#2 Scott99

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Posted 13 July 2009 - 12:03 PM

Chase -very nice work, I love these types of mounts! What is the round bearing on the sides of the tube made from? What type of wood did you use??

#3 Jim7728

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Posted 13 July 2009 - 02:23 PM

Looks nice! :bow:


...need LARGER(800x600) photo, please! ;)

#4 Chase McNiss

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Posted 13 July 2009 - 05:00 PM

The bearing are PVC pipe flanges on teflon and when balanced they hold the scope very well.

C

#5 Chase McNiss

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Posted 13 July 2009 - 05:09 PM

Larger image, note I have not finished sealing the legs with poly. The legs on the first phase of the build were too light and left the scope swaying too much. Second version is much better.
:jump:

C

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#6 crazyqban

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Posted 13 July 2009 - 05:36 PM

Good job, looks great!!!

#7 drshr

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Posted 13 July 2009 - 05:42 PM

Nice work!
I love this type of mount!

#8 Jim7728

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Posted 13 July 2009 - 05:57 PM

Larger image



Looks more impressive! :cool:

#9 JumboFlex

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Posted 13 July 2009 - 06:32 PM

Very interesting, makes the 6" refractor look tiny.

#10 mathteacher

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Posted 13 July 2009 - 09:26 PM

Love it!

#11 Chase McNiss

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Posted 14 July 2009 - 06:18 AM

Thanks everybody. The leg section just fits in the trunk of my Camry but is still long enough to put the eyepiece at a level for a comfortable seated position when the scope is pointed at the zenith.

Now if I can get some clear skies... :(
C

#12 NHRob

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Posted 14 July 2009 - 07:32 AM

Chase,
Very nice. What did you make the legs from?

Rob

#13 Kfrank

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Posted 14 July 2009 - 11:23 AM

I love seeing mounts like this. As I have stated in other postings, I think one of John Dobson's greatest contributions was that his simple alt-az mounts sparked an upswing in interest in simple alt-az mounts for other types of scope. It's nice to see simple mounts based on Dobsonian-like technology applied to refractors.

Not exactly grab 'n go but it certainly looks functional.

Great job!!

#14 johnnyha

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Posted 14 July 2009 - 05:47 PM

Greatjob ! What's holding the telescope in the cradle?

#15 Chase McNiss

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Posted 14 July 2009 - 06:17 PM

Rob,
The whole unit is mostly a dense poplar with plywood cirles for the head to the tripod.

C

#16 Chase McNiss

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Posted 14 July 2009 - 06:19 PM

Detail of the cradle and bearing section....

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#17 johnnyha

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Posted 14 July 2009 - 06:58 PM

Thanks Chase, is there a dovetail bar attached to the bottom of the rings?

#18 Chase McNiss

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Posted 14 July 2009 - 07:06 PM

Johnny,
Yes, I drilled and tapped two holes in the dovetail bar, that way I can use the CG5 for public skywatches and the alt-az for personal viewing without having to remove the dovetail bar.
C

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#19 Chase McNiss

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Posted 14 July 2009 - 07:10 PM

I forgot to mention that a few years back I had built another wood alt-az for a Celestron 6" f8 and the legs would be too long to fit in my Camry. Back then I had a pickup truck but hated to carry my optical tube in the bed of the truck.
C

#20 johnnyha

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Posted 14 July 2009 - 08:29 PM

That's slick Chase thanks!






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