This is the Horsehead Nebula in the Orion region with the Horsehead Nebula, Flame Nebula and some other minor ones.
Now the
final result of test within a discussion in the
Astrophotograpy Group that is about high iso, dynamic range and noise in astrophotos.
It should prove that there is an enourmous potentional in Pentax cameras in respect to amateur astrophotography.
Set up: K3 II with SMC Pentax-A 400 mm F1:5.6 @F1:6.3, 88 x ISO 400,15 x ISO 1600 and 91 x ISO 3200, 60 seconds exposure az ISO 400 and 1600, 30 s aat ISO 3200. Stacking with DeepSkyStacker with 2x drizzle activated. The Picture is uncropped. Postprocessing with Photoshop and Lightroom, some denoising with NIK dfine2.