This image is an LRGB composite of 99:24:21:27 minutes exposure, for a total imaging time of almost 3 hours. I used an ST-10XME CCD camera through a 4" refractor
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Galaxy NGC 6946 and Open Cluster NGC 6939 | |||||||||||||||||||
|
|||||||||||||||||||
|
|||||||||||||||||||
|
|||||||||||||||||||
| Order emerges from chaos in this image of two echelons of celestial structure. Although both the Galaxy NGC6946 and the Open Cluster NGC 6939 appear balanced in size within the constellation Cepheus, the Galaxy is over a thousand times farther away at a distance of 18 million light years. Thus the galaxy, with the light equal to 30 billion suns, dwarfs the cluster in absolute dimensions. Nonetheless, small telescopes showcase the open cluster, a relative neighbor within our own Milky Way Galaxy, whereas the much fainter Galaxy NGC6946 requires a large telescope for visual observation. This image is an LRGB composite of 99:24:21:27 minutes exposure, for a total imaging time of almost 3 hours. I used an ST-10XME CCD camera through a 4" refractor |
|||||||||||||||||||
|
|
||||||||||||||||||
|
|||||||||||||||||||
| Music: Sailaway by Enya | |||||||||||||||||||