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NGC 6939
Object Type: Open cluster
Constellation: Cepheus
Magnitude: 7.8
Size: 8' |
NGC 6946
Object Type: Spiral Galaxy (Sc)
Constellation: Cepheus
Magnitude: 8.9
Size: 11' x 10' |
These objects can be seen
together in a telescope with a low-power, wide-field view. NGC 6939 is located 4,000
light-years from our solar system, while NGC 6946 is at a distance of 10 million
light-years.
Instrument: ST-10XME/Vixen
102-ED/Losmandy G-11/Gemini/Astrodon RGB filters
F-ratio: f/6.5
Exposure: LRGB: L 8 x 4 minutes, binned 1x1: R 8 x 4 minutes: G 8 x
4 minutes: B 8 x 4 minutes: RGB binned 2x2
Date: October 7, 2005
Location: Landers, California, USA
Technical Notes: Individual exposures were dithered using Paul
Kanevsky's AutoDither plug-in
for CCDSoft and then sigma combined. RGB images were combined in Registar 1.0 and the LRGB
image composited in Photoshop CS.
