Hi there, before using your scope you should leave it outside for a few hours to reach ambient temperature (this will stop air currents inside the OTA and so the images will be more stable). I also use a BBQ cover over my scope so that condensation doesn't form on the scope while it's cooling.
To deal with fogging/condensation I use a portable fan heater and blow warm air over the corrector plate (on my SCT). After a couple of minutes to cool down again, it should be fine for the next 15 minutes or so.
In a few months the planets will be viewable at a more reasonable time of the night
Andrew