I may have just found a great solution for achieving very good polar alignment with any telescope mount.
There is this little piece of software called “SharpCap” ( http://www.sharpcap.co.uk/ ). It’s a very clever piece of software that uses a webcam or an astronomy camera to assist with focusing, stacking, polar alignment and much more. Unfortunately SharpCap does not support DSLR cameras as a video source. It supports some of the available astronomy cameras such as ZWO, QHY, etc. If you want to use SharpCap you have to have a camera that is supported. I was on my way to purchase a ZWO camera to do this when I read a forum post on Cloudy Nights ( https://www.cloudynights.com/topic/545643-sharpcap-polar-alignment-experiences/ ) where someone mentioned that they are using another piece of software to allow them to use a DSLR as a webcam and that SharpCap actually processes the DSLR image seamlessly.
“SparkoCam” ( http://sparkosoft.com/sparkocam ) is providing the capability to use your Canon or Nikon DSLR as a regular webcam. When installed, SharpCap will recognise SparkoCam as a virtual webcam and process the DSLR live view images directly. No need to purchase a separate camera to work with SharpCap.
The process is quite simple, install the DSLR on your mount pointing towards the celestial pole. You would obviously do a basic mount alignment to get the camera view close to the pole, at least to within about 5 degrees. Now activate SharpCap and follow the instructions to get to an accurate alignment. This process will work with a tracking mount as well as a manual equatorial mount.
I have everything installed now and will test under the stars as soon as possible. It is raining outside at the moment, as can be expected….