I concentrated on getting lots of H-Alpha data and limited OIII and SII frames. The following images are taken from 300s subs at 2×2 binning (low gain) with a QSI683 at -36C.\u00a021 x H-alpha frames and 5 frames each for OIII and SII.
\nThe frames were aligned, stacked and calibrated as mono-frames in Maxim and then had digital development applied (FFT low pass and hardness 90). Each mono frame had a high pass filter applied in Photoshop and then combined to an RGB image and the H-alpha frame re-used as a\u00a0luminance frame giving a final LRGB frame.
\nCone Nebula at bottom with inverted Christmas Tree cluster above the cone; the bright star just above the cone is the tree topper and the very bright star at the top of the image (S Monocerotis) is the center of the tree trunk. The Fox Fur Nebula is at the top right corner.
\nHa=red; SII=green; OIII=blue:<\/p>\n
![\"NGC2264(oc)-LRGBHaRedSIIGrnOIIIBlu\"](\"http:\/\/www.cantabsoftware.co.uk\/astrodb\/wp-content\/uploads\/2015\/03\/NGC2264oc-LRGBHaRedSIIGrnOIIIBlu.jpg\")
<\/a>NGC2264<\/p><\/div>\n
Ha=red; OIII=green; SII=blue:<\/p>\n
<\/a>NGC2264<\/p><\/div>\n
SII=red; Ha=green; OIII=blue (Hubble palette):<\/p>\n
<\/a>NGC2264<\/p><\/div>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
I concentrated on getting lots of H-Alpha data and limited OIII and SII frames. The following images are taken from 300s subs at 2×2 binning (low gain) with a QSI683 at -36C.\u00a021 x H-alpha frames and 5 frames each for … Continue reading