IC 5146
The Cocoon Nebula

Combination of 20, 3 minute exposures using an H-alpha filter.
SBIG ST8XE CCD camera.
300mm f/4 Tamron zoom lens at 150mm.

IC 5146, more commonly known as the Cocoon Nebula, is a small emission nebula set within a large dark dust cloud in Cygnus, about 5 degrees south-east of the open cluster M39. The dust cloud is listed as B168.

Combination of 60, 1 minute images using red, green and blue filters.
SBIG ST-10XE CCD. 5" f/5 refractor at prime focus.

The dark patches visible in the image are a result of frosting on the CCD chip.

Combination of 6, 3 minute images.
SBIG ST-9XE CCD. 16" f/10 schmidt-cassegrain with an f/6.3 focal reducer.

Combination of 6, 3 minute exposures using clear and green filters,
3, 3 minute images using a red filter and 6, 3 minute images using a blue filter.
SBIG ST-9XE CCD. 10" f/6.3 schmidt-cassegrain at prime focus.

Combination of 10, 3 minute exposures using a clear filter,
and 5, 3 minute images using a red green and blue filters.
SBIG ST-9XE CCD. 16" f/10 schmidt-cassegrain at prime focus.