The ASI1600 camera has a free copy of Sharpcap available via download from the ZWO product page. If you own any ZWO camera, that uses or can use Sharpcap, have a look at the new Polar Alignment function included in the new release:
http://www.sharpcap.co.uk/sharpcap/polar-alignment
In Version 2.9 you can polar align within Sharpcap,
using plate solving - and it does not need an internet connection, something invaluable at a dark site.
Have a read of the briefing notes on the linked page. I have downloaded V2.9 but have not tested this new function yet, but it is an exciting development and addition.
Anyone using the Sharpcap polar alignment function, can you please give us some feedback?