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NGC 3576, right and NGC 3603, in hydrogen alpha light.

Both nebulae, situated in Carina, near the Eta Carinae Nebula, are very active star-forming regions and emit strongly in the light of ionized hydrogen (H-Alpha).  They are 7.000 and 14.000 light years away respectively.  NGC 3576 with its characteristic loops formed by stellar winds also contains a number of prominent Bok Globules, dark dense stellar nurseries.  NGC 3603 may well be the largest nebula in our galaxy and features concentrations of young, hot and massive Wolf-Rayet stars, much like at the center of the Tarantula Nebula (NGC 2070).

 

Image info

Telescope:  Orion 80ED apochromatic refractor at f/7.5

Focus:  Prime focus

Filter:  Astronomik Hydrogen Alpha 13nm FWHM

Mount:  Vixen GPD with Skysensor2000

Camera:  Artemis 285 CCD camera

Guiding:  700mm refractor guidescope, SAC7 camera, autoguided with Guidedog software

Exposure:  Total 70 mins (10 x 420s)

Date:  8th Feb 2006

Processing:  Offset and flat fielding, registering and stacking done in IRIS.  No dark frames.  Curve stretching and Levels in Photoshop CS2.  Smart Sharpen.  Corrected slight ovality in the stars.  Noise reduction in Neat Image.

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