North American Nebula, RGB +/- Ha luminence

A standard RGB image (mouseoff) has been enhanced using H alpha data as a luminence layer (mouseon, and link).

Object(s): NGC7000, NGC6996, NGC6997 Coordinates: RA=21hr0min, DEC=44°15.5min Constellation: Cygnus
Telescope: TV85@f/5.6 Camera: Parsec 8300M Exposures: RGB (15,15,23)x500s, 26x1000s H alpha
Location: Quadeville Road, my back yard Date(s): August-November 2012 (RGB), September 2011 (H alpha) FOV: 125x95 arcmin
Notable images: Franke Montecchiari

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