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Old 02-10-2015, 04:31 PM
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alpal
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Join Date: Jan 2012
Location: Melbourne
Posts: 3,612
Update 2.10.15

It was good to have grand final eve off work.
I could finally get something done with my telescope.

I made the focus jig out of some 0.6mm galvanised steel sheet.
It is wrapped over upon itself & glued with Araldite.
I made 3 L-Brackets to attach the mirror holder
complete with collimation screws & springs.
Yes - you can make L-brackets fit a curved surface by
bending in a vice & also a bit of filing.
The 3 off L -brackets each have 2 screws & are glued with
5 minute Araldite.
Now I can put the mirror in any position I want to so I
should be able to easily find the best focus point.
I placed a whole line of holes down one side & I will attach
it more strongly when I find a close point with another self tapping screw.
It has 2 self tappers now.
It collimates ok but of course it's not as steady as inside the original
mirror holder frame which acts as a strengthener for the end of the tube.
See the picture.

cheers
Allan
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