Two pictures this time, both featuring Crux. Differences in processing technics and regarding the invested amount of time are visible.

alpha and beta Centauri, the Coalsack and Crux, 20x240s, ISO 800, 50 mm, F/5

alpha and beta Centauri, the Coalsack and Crux, 20x240s, ISO 800, 50 mm, F/5

The Coalsack, Crux and the Carina Nebula, 43x135s, ISO 800, 50 mm, F/4

The Coalsack, Crux and the Carina Nebula, 43x135s, ISO 800, 50 mm, F/4

 

raw sample

raw sample

processed

processed

raw sample

raw sample

processed with maximum star reducing

processed with maximum star reducing

25% of stars kept

25% of stars kept

no star reducing

no star reducing

 

 
top: stars reduced
bottom: stars kept
 

 

C 94, NGC 4755, Mel 114, Col 264 [open cluster in Cru] kappa Cru cluster Kappa Crucis., Jewel Box, Ékszerdoboz 4.2m ø10′ [wiki] [simbad] 750mm

C 92, NGC 3372 [nebula in Car] eta Car nebula, Carina-köd ø120′ [wiki] [simbad] 200mm, 400mm, 1200mm

C 102, IC 2602, Mel 102, Col 229 [open cluster in Car] Southern Pleiades A group of bright stars around Theta Carinae. Noted by Bailey., Theta Car Cluster, Déli Plejádok, Pleiadele Sudului 1.9m ø50′ [wiki] [simbad] [photo-planner]

C 100, IC 2944 [open cluster+nebula in Cen] lambda Cen nebula, Running Chicken Nebula, Szaladó Csirke-köd 4.5m ø75′ [wiki] [simbad] 200mm, 400mm

NGC 3114, Mel 98, Col 215 [open cluster in Car] Well-defined, loose cluster in a rich region. 4.2m ø35′ [wiki] [simbad] [photo-planner]

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