NGC 6633-IC 4756
  

NGC6633-IC4756LRGB_600.jpg (447010 bytes)

Higher-resolution versions:  1680 x 1050   3983 x 2644

IC 4756
Object Type:
Open cluster
Constellation: Serpens
Magnitude: 4.6
Size: 40'
NGC 6633
Object Type:
Open cluster
Constellation: Ophiuchus
Magnitude: 4.6
Size: 27'

Equipment: Nikkor 300mm/4 lens/STL-11000M/Astrodon LRGB filters/Paramount ME
F-ratio: f/5.6
Exposures: LRGB: L 12 x 5 minutes: R 12 x 5 minutes: G 12 x 5 minutes: B 12 x 5 minutes: RGB binned 2x2
Date: June 16, 2012
Location: Landers, California, USA
Technical Notes:
Individual exposures were dithered using CCDAutoPilot2 and then sigma combined. The RGB image was created in Registar 1.0.

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