Celestial hemisphere:  Southern  ·  Constellation: Carina (Car)  ·  Contains:  NGC 3372  ·  eta Car nebula
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Eta Carinae, Bruce Rohrlach
Eta Carinae
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Eta Carinae

Getting plate-solving status, please wait...
Eta Carinae, Bruce Rohrlach
Eta Carinae
Powered byPixInsight

Eta Carinae

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Description

My first narrowband images of a nebula (unguided). This is the impressive Eta Carinae nebula (NGC 3372) which I imaged last night over 3 hours within the constellation of Carina, within the Sagittarius Arm of the Milky Way. This area of nebulosity, star birth and star death, lies between 6,500 and 10,000 light years from earth, so here you are seeing Eta Carinae as it existed around the dawn of civilisation on earth. Eta Carinae is wider than the full moon in angular dimension or visual area of the sky.

120x30sec exposures (1 hour) with each of the Sulphur (SII), Hydrogen-alpha (Ha) and Oxygen (OIII) 7 nanometre filters (total of 3 hours of exposure) mapped to RGB (Red-Green-Blue). This is known as a false colour composite in the "Hubble Palette" (as many images from the Hubble space telescope are rendered in this configuration). As Hydrogen is the most abundant gas in this nebula and is mapped to Green, the image is dominated by Greens, with cyan areas mapping areas of hydrogen and oxygen in the nebula.

Need additional exposure time to collect more photons from the fainter areas

ASI1600mm-Pro (sensor temp minus 15C), Skywatcher 8inch/f5 on NEQPro6.

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Eta Carinae, Bruce Rohrlach