Wasn't very happy with the data I got on the weekend but I figured I'd still try to get something out of it. The Lum subs were super noisy, I suppose cause they're not long enough? Also the camera has a very obvious gradient from top to bottom and blue channel was captured after meridian flip so it created a terrible rainbow kind of effect when the rgb channels were combined.
25 x 120s 1x1 Lum
10 x 180s 1x1 R
10 x 180s 1x1 G
10 x 180s 1x1 B
Not too bad at all Tim. It may have less to do with your sub exposure time but more your overall amount of exposure time. 50 minutes of luminance isn't a lot in the grand scheme of things. Put another night purely for luminance and it will help a lot with the noise.