Post by nobody on Mar 22, 2016 13:26:28 GMT -5
Hi
My labours over my straight-tubed 7" f/12 were rewarded with a bad back.
I just couldn't manage to lift the 45lb weight above my head safely onto the mounting.
So I went folded and built an open framework out of the Porsa building system.
This uses 1" square, light alloy tube with reinforced joints.
The design has passed through several iterations but I am now very close to completion.
I wanted a detachable objective so built a simple bayonet lens attachment system.
I used baking tins as housings for the 1/20 wave optical flats from Steve Dodds.
The collimation triangles were greatly expanded beyond the footprints of the 4" & 5" flat mirrors.
This provided slow motion and greater stability.
So that collimation remains unchanged between fittings to the mounting.
First light on the half Moon was crystal clear with very fine detail and I maxed out at 216x.
Unfortunately the Moon has been sinking towards the horizon ever since.
Cloud has blocked later viewing.
Colour correction remains impressive at focus.
All the details, yet again, appear on my blog with loads of images.
fullerscopes.blogspot.dk/
My labours over my straight-tubed 7" f/12 were rewarded with a bad back.
I just couldn't manage to lift the 45lb weight above my head safely onto the mounting.
So I went folded and built an open framework out of the Porsa building system.
This uses 1" square, light alloy tube with reinforced joints.
The design has passed through several iterations but I am now very close to completion.
I wanted a detachable objective so built a simple bayonet lens attachment system.
I used baking tins as housings for the 1/20 wave optical flats from Steve Dodds.
The collimation triangles were greatly expanded beyond the footprints of the 4" & 5" flat mirrors.
This provided slow motion and greater stability.
So that collimation remains unchanged between fittings to the mounting.
First light on the half Moon was crystal clear with very fine detail and I maxed out at 216x.
Unfortunately the Moon has been sinking towards the horizon ever since.
Cloud has blocked later viewing.
Colour correction remains impressive at focus.
All the details, yet again, appear on my blog with loads of images.
fullerscopes.blogspot.dk/
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