The Rosette Nebula
Emission Nebula/Star Cluster in Monoceros
Lens: Stellarvue SV80s at f/4.8
Camera: Canon XTi Hutech Modified
Mount: Home made GEM with Byers Starmaster Drive
Location: Happy Jack, Arizona
Elevation: 6800 ft.
Sky: Seeing 8/10, Transparency 10/10
Outside Temperature: 35F
Processing Tools: Photoshop CS2, Maxim DSLR
HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS
GLOBULARS OPEN CLUST PLANETARIES LINKS
few nebula in the sky that so clearly display the transition
from pink in the central regions to a deep red in the outer.
This is caused by the fact that the inner most nebula is closest
to the hot OB stars in the cluster and thus put out an additional
Hbeta line in the blue. Further out, we only get the pure deep
red of Halpha excitation. The nebula itself, NGC2237-38 surrounds
the large and splashy open cluster NGC2244, a 4.8 magnitude elongated
object with plenty of hot stars.
The field here
is 2 x 2.5 degrees in size and is a richly stellar field with
many colored stars.