I have gotten more than a few suggestions regarding guidescope size in relation to the imaging scope. It really did make the difference. With my former 130mm fl 30mm wide guidescope, I could barely get 1 min subs though I could get 5 min subs using it with an f5 refractor. The upgrade in autoguide camera from the 5iic to the 5iiic290 seems to have helped as well.
The Exos2 PMC8 is holding it's own!
DHEllis59, Dover, DE
Explorer Scientific 80mm EDT
Astro Tech RC 6 w Pegasus Focus Cube,
Orion Starshoot II Pro Imager,
QHY 5 II Guide Camera and 30mm Guidescope,
Explorer Scientific EXOS GT 2 With PMC Eight Controller,
Orion XT8 with Nexus II DSC via Sky Safari Pro,
Celestron Luminous 31mm, Meade MWA 10mm, and 5mm EPs
Celestron Skymaster 15x70 binoculars,
20/20 or better vision in both eyes due to recent cataract surgery!!!
"The LORD by wisdom founded the earth, By understanding He established the heavens" - Proverbs 3:19