Philip Washington wrote:
I am going to an observing area where other amateur astronomers may be
i the vicinity. I use a laptop to control my CCD camera and telescope and
was concerned about minimizing the light from laptop screen so I don't
annoy other astronomers.

Hi:

There's always the option of Rublith and similar gel filters. I found I
wanted something a little more sturdy, however. I've been very pleased
with the "Sightsaver" from idealastronomy.com. It works and looks like
it'll last a long time.

Peace,
Rod Mollise
Author of:_Choosing and Using a Schmidt Cassegrain Telescope_
http://members.aol.com/RMOLLISE/index.html