Rosette Nebula (Emission Line Image): Close to the Orion constellation there is in Monoceros this spectacular emission nebula like a blooming flower. NGC 2244 is actually the open star cluster in the center exciting the hydrogen clouds of this star cradle from which they were born. Dust bands and clouds in between make this sight so beautiful, especially the bizarre structures in the lower part of the image. Some of them are so called Bok Globules, which are believed to house stars in the beginning of their life cycle.
These objects are sometimes also called the "Creatures of the Rosette Nebula" and with some phantasy one can recognize among them from left to right an ostrich, lama, antilope, leopard and dog.

This image was put together by adding three different exposures, taken with narrow band filters, representing emission lines of three atoms: sulfur, hydrogen and oxygen. Red represents the content of sulfur, green hydrogen and blue oxygen in the surrounding gas.

For a view into the center of the nebula with the Spitzer infrared space telescope click here.



Object Rosette Nebula
Category Emission Line Images
Designation NGC 2244
Constellation Monoceros
Optics TMB 130 f/6 with Field Flattener
Mount Astro-Physics 900 GTO
Camera QHY8/ALccd 6c
Exposure 6 x 30min Baader H-alpha filter(7nm), 6 x 20min Astronomik O[III], 10 x 20min S[II] filter.Maxim DL for image acquisition
Calibration Flat Frame
Guiding Meade DSI Pro II and Skywatcher ED80 as Guide Scope, Maxim DL as Guiding Software
Processing Maxim DL5, Photoshop. Color Code L:H-alpha, R:S[II], G:H-alpha, B:[OIII]
Location-Date Somerset West, South Africa - 18+19 Dec 2008, 12 Jan 2009
 
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