This is 1h30m of 3 minute exposures into the Markarian's Chain region of the Virgo Supercluster. The image was collected with a QSI 583c with a Televue 127is guided on a Paramount ME. In comparison to my recent image with a Canon 6D the noise floor is a bit smoother (this image was captured with the chip at -15*C), but the depth is fairly similar. I would say the QSI edged out the 6D, but it was closer than I expected.