NGC2237 Rosette by SteveL
Second rework of the (HaR)GB Rosette data from earlier this month, and just squeezing it into this thread before March ends and turns into April.

Having been given “the day off” from looking after our new arrival, I have just spent the entire day doing astro related stuff… its been awesome :)

Anyway, one of the things on my to-do list was to spend to more time processing my Rosette data from a while back, taking on board the various comments that have been made about it. Just finished 4 hours of playing with this, and included the following improvements:

- better contrast in the rosette itself
- less “salmon pink”, more red
- removed the cyan halos aorund the stars in the left of the image
- added a tiny amount of the Ha into the blue channel (about 12% looked about right)

Also took on board some of the items covered at the SGL Imaging day, specifically the keeping color saturation without losing detail, and the Shadow/Highlight tool, plus managed to get a good star reduction on the image.

So, here we go….

Ha Data
Mount: EQ6 via EQMOD
OTA: Borg 77EDII @ f/4.3
Guiding: SW ED80 + SX Lodestar + Maxim
Imaging: Starlight Xpress M25C + MaximDL, 11×900s, Astronomnik 13nm Ha (101 bias, 101 flats)
Orchestrated: CDD Commander
Stacked: DeepSkyStacker

RGB Data
Mount: EQ6 via EQMOD
OTA: Borg 77EDII @ f/4.3
Guiding: SW ED80 + SX Lodestar + Maxim
Imaging: Starlight Xpress M25C + MaximDL, 19×600s, Hutech IDAS LPR (101 bias, 101 flats)
Orchestrated: CDD Commander
Stacked: DeepSkyStacker

Post Process: PSCS2 + PixInsight + Registar