NGC 3372 -Caldwell 92


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NGC 3372, better known and referred to as the Eta carina nebula, is one of the most iconic objects in the Southern Hemisphere (if not of the whole sky). The star Eta carina itself (class B0), located in the center of the nebula, is a giant variable blue star (6.2-11.1) and is surrounded by the Homunculus Nebula (not visible in this image, but there is a wonderful image from the HST).

NGC 3372 is a bright (visible with the naked eye) and very large nebula. It is one of the largest HII regions in the Milky Way and four times as large as the better known Orion Nebula (M42). The small region surrounding Eta Carina is commonly named the Keyhole Nebula.

Additional Information


Name(s): NGC 3372, Caldwell 92, Eta Carina nebula, Keyhole Nebula

Type: Emission Nebula

RA:  10h 43m 48s

Dec: -59º 51’ 56”

Constellation: Carina

Size (arcmin): 120×120

Magnitude: +1

Distance: 10,000 ly


Date: 2014-03-30

Location: SSO near Coonabarabran, NSW Australia

Size (arcmin): 235×152

Telescope: Takahashi FSQ 106 f/5

Camera: SBIG STL11002M (4008x2672pix)

Guiding: Yes, but not recorded

Total exposure: 80 min (L: 20min; RGB: 60 min)

Processing: CCDStack, Photoshop CC 2016 and PixInsight

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