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This is a 1×2 mosaic that includes the previous version of NGC 3372, found here (left half) and a beautiful image of Wolf-Rayet 22 (WR22), taken by Don Goldman at the same telescope (right half). The image of the nebula, taken only with narrowband filters (RGB has been only used to grab the stars) has been processed using the color palette that reproduces the spectrum of the nebula. This color should be, then, very close to its natural color. The Wolf Rayet stars are massive stars that are perfect candidates for a supernova explosion soon (cosmologically speaking…). WR22 is the bright bluish star at the center of the right half.
Additional Information
Object
Name(s): NGC 3372 + WR22
Type: Emission nebula
RA: 10h 43m 37s
Dec: -59º 44’ 01”
Constellation: Carina
Size (arcmin): 120×120
Magnitude: +1
Distance: 10,000 ly
Image
Date: Several nights between 2016-02-21 and 2016-03-18
Location: iTelescope.net, SSO near Coonabarabran, NSW Australia
Size (arcmin): 49×30
Telescope: Planewave CDK 20” f/6.8
Camera: SBIG STX16803 (4096x4096pix)
Guiding: Astrodon MonsterMOAG off-axis guider
Total exposure: 41.5 hours (23x30min Ha; 30x30min OIII; 22x30min SII; 16x5min RGB)
Processing: CCDStack, Photoshop CC 2016