I'm thinking of getting a 2" filter slide, something like the Moonlite one, to pair with my 20" Skywatcher Dob. Ideally one with a dew heater element built in.
https://focuser.com/products/focuser...lterslideA.jpg
Does anyone have any recommendations? Are there any local suppliers or is ordering direct from Moonlite (or others) in the US the only option?