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P1020632b

parts cut out of 3 mm ply (BCB quality). This was done so I could cut circular parts without having to buy a router. All cutting was done with a stanley knife, circles made with a makeshift circle cutter employing a stanley blade. 4 layers of 3mm are used for the mirror box and mount. inner 2 layers of mount and inner 3 on bearings, will be skeletized to reduce weight, should still be strong enough. OTA will be about 11 pounds and consist of 7inch high mirror box, 35inch truss (12mm aluminium tubes cut in halves) and upper cage 1.1 pounds. I am mad enough to use a piece of pvc drainpipe with inner layer of milk bottle plastic as a simple push-pull focuser. This works fine on my 150mm F8 scope but will prove tricky to focus on an F6. Just couldnt find a low enough profiled focuser for the 31mm diag mirror to produce large enough fully illuminated field. (4mm - good enough for 6mm ortho which will be my main high power @ x200)


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200mm F6 backpack scope

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