Farpoint Dew Shield - Celestron 8 Inch SCT and 8" RASA
I bought this for my orion XT8 Plus Newtonian. After measuring the tube OD, I knew it would fit the scope. Works as a light shield as well as a dew preventer for the diagonal.
The Farpoint Dew Shield for the 8" SCT is an excellent performer. I'd not purchase another brand.