Stephan's Quintet - NGC7320, 7320c, 7319, 7318 (a and b) and NGC 7317
This is 40.5m of exposure on Stephan's Quintet using the 1.8 meter Plaskett telescope. I captured 16x45s in GPrime, 18x45s in RPrime and 17x45s IPrime, calibrated with bias and flats.