Thanks for the comments. Yes I like the Edge and have used this Edge11 for about 1.5 years. Before that I used Edge8 at f/10 in Dublin, Ireland - and before that I used C11 from just north of NYC. I have used all of them with robofocus on the primary - but previously I had used my own focus code combined with Maxim - but lately have been using SGP for acquisition including focusing and dithering with MetaGuide - and video OAG.
I am very happy with the optics and performance of the Edge11 with 0.7x reducer. I have used the sgp autofocus for a long time - but this is the first time I didn’t help it along manually by turning off autoguiding in MG, doing autofocus, then re-guiding. In this case SGP did it all -which was nice to see.
My main limitation for full automation is that with my cge-pro I can’t exactly center the field well enough so that the guidestar will land properly on the oag sensor. But that stuff should work well with a high end mount and sgp.
You don’t say if you’re using OAG - but if you are and your image scale is the same as mine, then acquiring a specific guidestar will be a challenge for automation. But if you just use long guide exposures you may be able to find guidestars anywhere - but fainter.
I don’t know the rc12 very well - but many people complain about focus shift in Edge and prefer a separate focuser. But if you use autofocus with the primary focus knob, the actual focus shift is smaller than people think - for me around 20" - and with autofocus it just does its thing and 3 minutes later you have excellent focus. And the 20" shift only happens when racking back focus; when you rack it back in the star returns to where it was and you can start guiding again - and dither.