The image was created by mapping the SII, Ha and OIII data to RGB respectively and then adjusted using Photoshop’s Selective Colour tool. Final enhancements were performed using the Sharpener Pro 3 tools and Color Efex Pro 4 filters from the Google Nik collection.
Right ascension: 19h 43m 22s | Declination: +23° 16' 13" | Distance: 6,000 Light Years
Field of view: 54 x 37 arcmin
Camera: SBIG ST-10XME
Telescope: APM 152-1200ED F/6.2 with Riccardi x0.75 Reducer
Guiding: Off-axis with Lodestar guider
Filters: Astrodon Ha (3nm), OIII (3nm), SII (3nm)
Exposures: Ha 27 x 20 min, OIII 35 x 20 min, SII 33 x 20 min
Total exposure: 31.7 hours
Image composition: False Colour Hubble Palette (SII, Ha, OIII mapped to RGB)
Scale: 1.49 arcsec/pixel
Image acquired: July - September 2014
Image capture with MaxIm DL, FocusMax, ACP; Image processed with MaxIm DL; Photoshop CS4; Focus Magic; Color Efex Pro 4, Sharpener Pro 3