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G'day.
I made my light shroud from some heavy cotton / linen material and 25mm plastic square garden lattice from Bunnings. The material happens to be green because the day I went shopping I couldn't find any black.
This square lattice product keeps the tubular shape well when fitted, and it bends easily enough so that if you are looking through a straight-through finderscope, you can get into position comfortably without pushing the OTA all over the place place with your cheek. (My Mk1 version used core flute which didn't bend easily).
You will need much less than the amount in the smallest packaged roll. Maybe someone in your astronomy group has some spare.
I folded the top of the shroud over and sewed it so I could thread a long length of nylon string - the excess is wrapped around the OTA to cut off any gaps during Solar viewing.
The top flap of the shroud is held closed first with a velcro patch.
Cheers
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