Taken with the FLI Kepler KL4040 at the Oregon Star Party July31-Aug2. 65 3-minute subs each Ha and O3. 16 darks, flats and biases. My first "serious" image with this camera under dark skies. This camera is highly sensitive but difficult to calibrate - Vincent was a GREAT help in getting an acceptable result!
Thanks, but it's your data so well done! Maybe, if I may, the background is a bit too dark and you used some de-noise tool I think which hurts the finer details in the nebula.
Thanks Vincent, god points. I tend to over-process. I'm redoing it to go to a grey background with a lighter smoothing touch and not much other processing. I'm also running a larger set of darks and biases (50 each) to improve calibration. Will post update later
Taken with the FLI Kepler KL4040 at the Oregon Star Party July31-Aug2. 65 3-minute subs each Ha and O3. 16 darks, flats and biases. My first "serious" image with this camera under dark skies. This camera is highly sensitive but difficult to calibrate - Vincent was a GREAT help in getting an acceptable result!
I share Vincent's argument, I think the background is a bit too dark and possibly clipped.. I prefer to process not so dark, if you do, fine details get lost very easily 😉
OK I ran some more darks and reprocessed from beginning. Combined in APP - looked at lots of LRGB settings, ended up R=Ha, Green = 25% Ha 75% O3 and Blue = O3. Very light touch on denoise (using Topaz AI) and set background to about 35 (scale of 0-255 photoshop levels). Hope it looks OK on the web and in jpg format