[gregbradley]

I may need to give my CDK17 primary mirror a clean soon. Its got a bit of dust buildup on the mirror. One of the weak points of an open system.

Any suggestions about the best way to clean the mirror?

I was thinking of having the scope horizontal and lots of soapy warm water and daubbing it with a soft sponge cleaning the sponge often.

Then rinsing with distilled water and blow dry or let air dry.

I would allow the excess water to simply run down the OTA tube and lean it forward slightly so it drains onto the ground. The OTA tube is not that long being a truss scope, perhaps 350mm.

Greg.