arminmanhard
h and chi Persei Double Cluster: alternative processing
The famous Double Cluster (a.k.a. h and Chi) in the constellation Perseus, with an alternative route of post-processing to digitally reduce chromatic aberation. Imaged with TAIR-3S @ f/5.6 on Samsung NX30 with Rollei Astroclear (anti-citylight) filter. 23 subs of 30 s exposure. ISO 3200.
Stacking with DeepSkyStacker. This time, I first used Adobe Photoshop to multiply the somewhat defocused Red channel with the sharp and crisp Green channel to remove some of the chromatic aberration. For the Blue channel, the defocus due to chromatic aberration was substantially less than for Red. Further post-processing was done with Aurora HDR 2018 (tonemapping, color corrections, HDR cosmetics) and ImageJ (2x2 binning). I would be glad to hear your opinion which version you like better!
h and chi Persei Double Cluster: alternative processing
The famous Double Cluster (a.k.a. h and Chi) in the constellation Perseus, with an alternative route of post-processing to digitally reduce chromatic aberation. Imaged with TAIR-3S @ f/5.6 on Samsung NX30 with Rollei Astroclear (anti-citylight) filter. 23 subs of 30 s exposure. ISO 3200.
Stacking with DeepSkyStacker. This time, I first used Adobe Photoshop to multiply the somewhat defocused Red channel with the sharp and crisp Green channel to remove some of the chromatic aberration. For the Blue channel, the defocus due to chromatic aberration was substantially less than for Red. Further post-processing was done with Aurora HDR 2018 (tonemapping, color corrections, HDR cosmetics) and ImageJ (2x2 binning). I would be glad to hear your opinion which version you like better!