Hemi, as a user of EAA for 4 years and being retired - pretty much every night its clear I try to get out. I have multiple DSLR, mirrorless, video and such cams.
As per Camel.. Naut... posts, if you already have a DSLR just get the EOS Utils/BYEOS and go have fun. If you do this, also get AstroToaster (free) which stacks, derotates, stretches, and does a good job at imaging on-the-fly in-field for EAA. DSLR will go well with your long focal length SCT. The horizontal width of the sensor is about 22mm so it behaves as if it were a 22mm eyepiece (approx).
The above is a GREAT way to get going easily. The live/stacked AT views are good but galaxies are tough live, nebs and bright stuff are great! And you can go real long if you have a GEM and want to do proper imaging trying to win NASA photo of the day! (Although many are doing 30 sec shots and AltAz and doing great with DSLR's too!)
If you just can't wait and you fork over the $ for an Infinity, you'll still have fun. I dont own one but have several acquaintances in the US who do. One bit of software controls the lot, good sensitive chip, etc and auto gets rid of hot pixels and amp glow. Also has good histogram adjustments .. easy to use! The sensor is about 8mm horizontally so it will behave (approx) like a 8mm eyepiece in your scope IE much more mag and narrower FOV.
The above is great for live view. It will give you great snaps of what you looked at during the night. If you really want to get into good imaging then I doubt you'll win NASA photo of the day with its stacked images. It is restricted to 2 mins exposure for instance. But the jury is out on this until someone tries proper imaging with it I suppose
If you get convinced to get a CCD'like proper imager, to 'grow into', then many are using the AstroToaster mentioned above along with the cams capture software to stack frames on the fly to do EAA/in-field live observing too. It just isn't one bit of software and there's more sliders n stuff to learn. But it will last you right thru learning, and then into using it for proper long exp imaging in the future. Don't forget its sensor will determine the mag/FOV although big pixels on really good ones affects the approximation I told you re sensor width = eyepiece mm (approx). Prob better to use Stellarium Occulars plugin to work out the FOV.
Summary ... for now I second/third/fourth the idea to go DSLR and have fun and learn. You'll be able to try EAA and also long exp (if you have GEM). You will learn which way you want to go ... EAA or imaging. Doesnt cost much either ... my 2nd hand DSLR was $350 with lens which I sold! my 2nd hand Nikon J1 (dont know of anyone else using this for EAA) cost $135. I had the laptop ... away I went.
