M78 Reflection Nebula

OPTICS: NP-127 660mm f/5.2
MOUNT: Mountain Instruments 250
CAMERA: ST-10XME
GUIDING: ST-402ME on TMB80 f/6
FILTERS: Astrodon "E" Series TruBalance
EXPOSURE: RGB (4)15min each filter
DATE(S): 12/13/2006
LOCATION: Horizontal Heavens Observatory, Texas USA
ACQUISITION: CCDSoft v5
PROCESSING: ImagesPlus, CCDSoft, PhotoshopCS2
NOTES: Imaging this in the NP-127 took roughly half as long as the same shot taken in the TMB80.
I guess the difference between 3" and 5" in aperture really shows when it comes to collecting photons.