IvorHogseye

Thanks everyone. That’s some excellent help. Yes it’s a celestron evo 8. I’ll make a dew shield and will have a look at the fancy dew heater. 
All the best 

First proper nights observing in 12 years. Everything was perfect. New scope. New decking. Working through the nights best. Absolutely loving it. I’m wearing so many layers I can stay out all night. However.  First time SCT, it’s frozen up and I can’t see anything. What would you advise?  All my kit is now in the dining room. There’s no way im switching the heating on. I am happy to buy a few shield or whatever maybe make one?  Im guessing lots of you have had a similar night. Love it

My first post didn't go as well as I'd hoped

You don't need a license to run the Windows 10 software.

It's working fine for me

https://www.howtogeek.com/244678/you-dont-need-a-product-key-to-install-and-use-windows-10/

Hi. I’ve just installed virtual box and then I built a windows 10 virtual machine for free. No licenses needed for either. I can now run the windows software on my Mac