NGC2237 - The Rosette Nebula

Narrowband Image in Hubble Pallette (SII - Ha - OIII) with RGB Stars

(Total exposure 24.2 hours; R 8x10 min 12x2 min, G 8x5 min 12x1 min, B 8x10 min 12x2 min; SII 3nm 10x30 min, Ha 3nm 16x30 min, OIII 3nm 14x30 min, all binned 1x1; Hubble Pallette with RGB stars; Cropped; December 2013)