I've shot M45, the Pleiades, a couple of times but have never been able to get more than a couple of hours on it because of weather and other circumstances. In November, 2023 (between the 15th and 19th) I thought I'd get an early seasons start because I couldn't depend on the weather, especially once December rolled in. I was able to amass 9hrs 15min on the Pleaides.
ASI2600MC Pro, Skywatcher EQ6R Pro, Starfield Gear 80, 0.8 adjustable flattener/reducer