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"The sky is the ultimate art gallery just above us." - Ralph Waldo Emerson (1803 - 82)
Astrophotography by Jason Jennings

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Nebulae :: NGC7538 - Hubble Palette


NGC7538 - Hubble Palette

 

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         Object NGC7538 - Hubble Palette
         Comment Located near the famous Bubble Nebula in the constellation Cepheus resides the bright emission nebula NGC7538. The nebula houses the largest known protostar which is approximately ten time the size of our Solar System. A Protostar is a cloud of hot dense gas and dust that is collapsing under it own gravity to form a star. Little is still know about High-Mass Protostars, but it is assumed that they are surrounded by an acceleration disk that drives molecular outflow, such as seen in Low-Mass Protostars. NGC7538 is 9,100 light years away and is a region of active star formation including several luminous near-IR and far-IR sources. Reference

To view a wide field image of NGC7538 in a traditional RGB palette click here.

Portrayed in this image is the different atoms the make up the nebula complex. The dark red/brown hue displays Sulphur atoms, while the green and blue, Hydrogen Alpha and Oxygen respectively.

This narrowband image is a SII:Ha:OIII mapped as R:G:B respectively (Hubble Palette). Data acquired on the Lightbuckets 24" RCOS.
         Optics RCOS 24" F/8 (4876 mm FL)
         Camera Apogee Alta U42 - 1x1 bin (image scale .57 arcsec/pix)
         Mount RCOS Professional Series Equatorial Fork
         Exposure Total exposure time: 4.5 hours (SII:90min,Ha:90min,OIII:90min)
         Date 15,16,18/11/2009

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