Telescopemaker.com
Amateur Telescope Making
Charlie Wicks
20 Inch
Aluminum Alt-Az
6 Inch Airline Portable String Scope
6 Inch
f/15 Refractor
Large German Equatorial Mount
10 Inch Airline
Portable String
Scope
6 Inch f/5 "String" Scope
The altitude trunions are folded down above the mirror. This feature allowed the box to be about 2" smaller in width.
The altitude trunions being opened.
The altitude trunions opened and locked down.
The JMI reverse crayford focuser on a custom dovetail base, slides into the bracket on the upper end and locks into position.
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The altitude trunions opened and rotated into position. The two compression struts are inserted onto posts and the ring is then set on top. The strings are tensioned by turning the two knurled knobs on the ring above each strut.
The assembled scope. Collimation remains quite good after assembly. Only minor tweaks seem necessary.