M33 being the Triangulum galaxy it's appropriate that this image was created from three sets of data for a total of 36 hours (details below.)
Processed in PixInsight, as usual. Larger version on Astrobin:
http://www.astrobin.com/217860/B/
Hope you enjoy it. Constructive criticism is appreciated.
Cheers,
Rick.
SRO Jan 2015...
Scope: FSQ-106ED
Mount: Paramount ME/AP900
Camera: QSI683
Filters: Astrodon Gen II LRGB
Guiding: QSI OAG + Lodestar
Image scale: 2.094 arcsec/pixel
Exposures: 17x900s L, 9x900s R, 11x900s G, 13x900s B
DSW Sep 2015...
Scope: FSQ-106ED
Mount: Paramount MyT
Camera: QSI683
Filters: Astrodon Gen II LRGB
Guiding: QSI OAG + Lodestar
Image scale: 2.094 arcsec/pixel
Exposures: 16x900s L, 18x900s R, 15x900s G, 13x900s B
SRO Sep 2015...
Scope: Ceravolo C300 @ f/4.9 = 1470mm FL
Mount: AP1100
Camera: FLI PL16803
Focuser: Atlas
Filters: Astrodon
Guiding: Lodestar II / Tak FS-60Q guide scope
Image scale: 1.26 arcsec/pixel
Exposures: 16x1800s Ha
Acquisition credit for Ha data: John Kasianowicz, Daniele Malleo, Leonardo Orazi, Rob Pfile, Rick Stevenson and Jerry Yesavage.