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Old 17-10-2011, 05:29 PM
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GrahamL
pro lumen

GrahamL is offline
 
Join Date: Jun 2006
Location: ballina
Posts: 3,265
6 " travel scope

We do a bit of camping and my 12" dob while certainly fits in the wagon it does hog a bit of room , so why not a small portable scope and I fit in the blow up boats to !

Most Of the scope is finished now save putting it together so heres a few pics.

I hope the single pole truss works out its fairly light up top and I'm planning on a small helical focuser so weight wise it shoudn't get much
heavier.

Stiction on both motions may be a little light for teflon so I'm playing with a little velcro and felt for now.

The secondary spider is from an old orion 8" , I've cut and repinned the pivots on it to suit a smaller primary and drilled some weight out of the
hub as 1/2" brass is a bit overdone.

The mirror cell is 1/2" ply , the mirror will sit on a ring of velcro at the
60 % zone and probably have three edge / centering supports which will barely touch the mirror itself.

Its been a lot of fun so far and I've even repeated mistakes from
my first scope .

1 ..measure and think before you cut

2.. mark out ALL the angles and lines you need for complete assembly
of all componants ( sometimes you cant do this half way through )

3.. consider how the said marked angles and lines fit into the componant assembly , there not much good on the inside or upside down were you can't use em , eh graham ?

This scope i thought being smaller would take less time to put together
well thats not realyl the case it seems similar to the 12".
tools are pretty minimalist though a cordless drill and a dodgey jigsaw
probably dont really scream workshop but they are enough to get the job done .
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