[AdamJL]

Hi all

Looking at buying my first mount (serious one.. I use an Astrotrac currently), plus scope.

In the field, away from home, I need something to power it all. Not going down the route of "build your own power supply", this hobby is technical enough, I don't need to worry about something else.

So will need to power

Mount: EQ6-R + synscan - 12V @ 4A = 48W?
Polar Align: Polemaster - USB, draws from laptop
Laptop: Surface Book 2 - Brick supplies power for laptop 15V @ 6.3A - 94.5W and USB port 5V @ 1.5A - 7.5W

150W minimum required.

That right?

I now have to try and find a power supply that will provide me around 200W for safety?

I guess the alternative is to run the Surface Book from full charge. It has a very long lasting battery (can get 10 hours if I'm lucky), but just in case....