Well I am back after sulking under the cloudy skies of NW Ohio. I bought the scope and the weather came with it. Sorry for messing up everyone's viewing but the curse should be leaving soon, I hope.
Question: My house has several street lights in the back and side yards as well as the street, I have a school driveway behind me. I have built the shroud and it is really nice but I still have a lot of interference. I read somewhere (think it was "Turn Left at Orion") that a yellow filter would be good to filter that out. Can any one offer what I need to buy for my OneSky?
You're describing a lot of nearby street lights and "interference". By that, are you seeing weird reflections, or "white out" in the eyepiece? Or are you just stating that objects you are looking for aren't visible through the sky-glow?
If it's the latter, then yes, your only option is to drive. You could possibly find something closer that has a darker perimeter. If it's the former, then you have more solutions, but a yellow filter isn't one of them.
I've had trouble with mine and street lights, even when I used it in Hawaii under a very dark sky. I found one culprit was light leaking into the gap between my shroud and the bottom of the focuser. I used some black electrical tape to close this gap. Another problem could be light coming through the open tube at the top. It doesn't extend much past the focuser, so adding a second shield at the open end of the tube could help here as well. You could experiment with a large piece of black craft paper.