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Looking good.
I thought of the dew tube light control because I was at a dark site astronomy each night every night up all night slept all day for years I lived that way...I only went shopping if it was cloudy etc...obsessive to the power of ten.
I could read newspaper head lines under just star light.
We see stars as little dots but their light spills all over.
It occured to me just the glare from Sirius must be a problem ...its not just a dot ...seeing it that way I became very conscious that ots light was greater than just a dot...it fell into the tube all over ...thats a lot of light.
Even if you do a zaw dust model it should help but I believe baffles are necessary...light can still bounce off saw dust but a baffle stops it and sends it back up the tube...draw something showing light paths from one star and you realise it goes everywhere.
Alex
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