[ATM] Dew shield material suggestion request

[Bruce MacDonald <brumac@gmail.com>]

I have a 10" newtonian and it was recently pointed out to me that my
secondary is extremely close to the front opening.

So close, in fact, that from some angles I can see the surface of the
mirror.  If I can see it, so can stray light.  This also explains why
this scope dews up so readily.

I've been playing with various stuff.  So far I've tried:
construction paper:  works, but not really opaque, and can only be
reused until the first time it encounters dew.

black foam (about 1/2" thick).  not truly opaque either, flimsy.  It
flops down over itself so that the aperture is now eyeball shaped.

arborite:  Way too stiff to make a circle of 10" diameter.

I wandered around Home Despot for a while and came up w/ no
inspirations.  I can't be the only person that ever encountered this
problem.

What do you suggest?

Being Canadian, I'm considering Duct Tape on a chicken wire* frame.

TYIA,
BM

*Chicken wire is sold in Home Despot as "poultry mesh".  I guess
"Chicken Wire" is considered derogatory.  <sigh>
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