I'm guessing that 8"SCT is f10, 2000MM focal length. For EAA as they call it now, you will need a large APS-C sensor camera for a good FOV. Does your scope have a finder scope?? Can an astro camera be fitted to it?? Another option is a dovetail plate on top of the 8" scope and a small refractor 60MM or large finder scope that can accept 1.25 eyepieces. Put a ZWO 178 or similar camera in back.
Typically, what you want to do is done with smaller equipment. A 60MM to 115 refractor and an astro camera, uncooled. a little Ioptron Sky tracker mount. Or full blown, nice scope, refractor / RASA, nice HD mount and camera to match.
I do not know how stable your mount is, this is why I recommended the large finder scopes and a ZWO 178 camera. You may be able to do eyepiece projection with an astro camera. I have never done that so I do not know if you would need a large or small sensor camera.
Go to Astronomy Tools and check out their FOV calculator. Lots of cameras and scopes to choose from.
Back in that day aperture was king, it still is, but with the new cameras of today you do not need big scopes to see anymore. I was there, two maksutovs and a C14. Now two refractors, 92MM and a 76MM. I have a ZWO 178 mono camera that I do Live stacking with. In a few images you can see galaxies, nebula, anything that is a smudge in the eyepiece comes to life in a camera. I'm still old school, you can see the Moon and planets through the camera, but I like my eyepieces better.
I'm sure a lot of people will chime in. Joe