My Celestron has gone, and planned use for this dew shield has changed. Consequently, for sale is my virtually unused Astrozap dew shield and controller to suit a Celestron NexStar 6" SE. It will also fit other 6" telescopes with similar OD (about 190mm nominal, no scope to measure!).
See here for info:
http://www.astrozap.com/pages/dew-heat.htm
Imported last year at a cost of about $250.00 Aust; for sale at $125.00 firm, plus postage.
Response by PM, please.
Wren