Hi DDJJ,
I forgot but for guiding on an EQ6 you will need some way of attaching the guide camera to the mount. For a DSI you would plug the DSI into the laptop and then run a cable from the laptop to the mount. This cable can be got from shoestring for about 80 bucks. I have one and it is fine. With a Q guider you may not need this.
Now the good news, free software you may use
PHd guiding, for guiding.
DSS (Deep Space Stacker) for stacking your images.
Focus Assist to help you focus.
IRIS to help you post process your images.
Hope this helps
Paul
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