I just go my new dew shield the other day from Astrozap.
Have a look at
http://www.astrozap.com/
It is a heated flexi shield with 12 v adaptor. It fits my scope perfect.
I have delt with Joe at Astrozap before very helpfull and had no problems ordering online. Joe seems to have a dew shield for most scopes.
I use to run a Orion dewzapper on my old 10" SCT and dew shield with it. This time I thought the lighter Flexi shield would be better on the Mak.
By the way I only waited 6 days to get my dewshield from the US, weekend also in there.
Good luck with it as dew is a real pest.
