VDB-142
Elephant Trunk

Click here to see a monochrome Halpha image (full)
Click here to see a monochrome Halpha image (resize)

Object
Description:
A gorgeous collection of dust and gas nebulae in the Northern Milky Way graces the high and far off constellation of Cepheus. This close up of the region highlights stars embedded in curiously shaped cosmic clouds. Near the central faint (9th magnitude) star in the image, dust clouds reflect the starlight, creating a bluish reflection nebula cataloged in 1966 as VDB 142. The area's bright reddish emission nebulae indicate the presence of clouds of atomic hydrogen gas. Stripped of electrons by invisible ultraviolet light, the hydrogen atoms emit their characteristic visible red light as electrons and atoms recombine. Sweptback clouds of obscuring dust, dark nebulae, are silhouetted against the bright background. Representing the stuff stars are made of, all these nebulae lie within the large young star cluster complex IC 1396, 3,000 light years from Earth.
Equipment
Instrument:
Vixen Visac VC200l at f6.3
Mount:
Losmandy G11 with MTS3SDI
Camera:
SBIG ST10XME NABG
Filters:
Astronomik 13nm Ha filter, SBIG RGB filters
Comments
Circumstances:
Image taken on 2 nights. Very humid and a bit foggy sky for both nights.
Comments:
Exposure of 300min for Ha, 120min for each color channel (RGB). Ha channel merged with red.