That's some nice kit, Baz!
Have you considered what imaging camera / focuser / filters / etc you'll be using? It might worth planning it out ahead of time to double check that everything is suitably matched and compatible.
Quote:
Originally Posted by bloodhound31
From what I understand about off-axis when I last attempted it, sometimes it can be VERY hard to even find a guide star in the FOV, depending on what you are imaging.
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I'm only using an RC8 and have yet to find a patch of sky that doesn't have a suitable guide star for my Lodestar using 2 sec exposures in 2x2 binning. Most areas of the sky have pretty bright guide stars (0.05 to 0.5 sec exposures).
If your mount has a smooth PE curve (and the EQ8 looks like it does from what people have posted), then you can use even longer exposures without a worry.
An RC12 has over twice the light gathering ability as an RC8 so you'll be fine
