It took a lot of PixInsight noise reduction functions to fix this one even though there were 78 light exposures and a ton of calibration files, due to the warm environment that night (2014-01-01) in our driveway in Johannesburg, South Africa. I got lucky shooting 3min exposures with my IR-modified DSLR that the thermal noise wasn't worse. Overall I'm happy with the result.
Image and equipment details are on my blog:
http://astroshake.com/2014/03/horseh...flame-nebulae/