Messier 93. NGC 2447

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Messier 93 is a Southern open cluster which is about 100 million years old. It contains 80 confirmed and readily detectable stars, but hundreds of fainter stars in the surroundings may belong to it. Most of the brightest stars are blue giants that belong to the spectral class B9. Three red giants also stand out, two of them just above its center (in this image), while the third is located on the left side.


Additional Information


Name(s): Messier 93. NGC 2447

Type: Open Cluster

RA:  07h 44m 29s

Dec: -23º 51’ 03”

Constellation: Puppis

Size (arcmin): 22×22 arcmin

Magnitude: +6.0

Distance: 3,600 light years


Date: 2021-02-04 to 2021-03-04

Location:, SSO near Coonabarabran, NSW Australia

Size (arcmin): 41×41 arcmin

Telescope: 17” f/6.8 Reflector

Camera: FLI PL16803 (4096x4096pix)

Guiding: N/A

Total exposure: 3.5 hours (L: 1h 35m; RGB: 1h 55m)

Processing: CCDStack, Photoshop CC 2021

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