I imaged this back in March thought it might be worth posting. Not sure about the colour.
Taken with 18" Newt f4.5 and QHY9
Ha 30x900 sec as Red
O3 25x900 sec as Green
Hb 12x900 sec as blue
Sorry small size only
Clear skies Ken.
Thanks Ross, Laurie,Dave and Hugh for your comments on the colour, this was the first test of the Hb filter. I thought the colour would be mapped a little more realistic than using S2.
Clear Skies Ken.
Great rendition, Ken! I wouldn't have thought to use Hb, but the filter mapping as blue appears to have lifted the image very well. You must have toned down the OIII mapped as green or made the OIII near cyan, similar to the Hb emission line. How much nebulosity is present in the Hb master alone as this is really a strong OIII target? Well done.
Thanks Paul and Jason yes the O3 was stronger than Hb and having twice as many O3 subs meant I had to stretch the blue a bit more. The sky background is still fairly neutral in colour balance though.
Clear skies Ken.