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NGC 2409 — Open Cluster in Puppis

Open Cluster Fair (37/100)
Magnitude 7.3m OpenCluster Puppis (Pup) Visible
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1Properties

Magnitude 7.30
Angular Size 0.1′
Cl, S but B, st 8...10

Position & Identifiers

RA 07h 31m 36.0s
Dec -17° 10' 60.0"
Constellation Puppis (Pup)
Catalog NGC 2409

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Medium+ Medium+ Medium+
150mm Newt. Medium+ Medium+ Medium+
C8 203mm Medium+ Medium+ Medium+
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

Stretch on Seestar S50

3Visibility

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Best season Dec – Feb (peak: Jan)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 2409 · 0.1′ diameter

5 Best Magnification

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6 Classification Decoder

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

NGC 2414
Easy
Open cluster
Open Cluster mag 7.9 1.8° Puppis
NGC 2432
Easy
Open cluster
Open Cluster mag 10.0 2.9° Puppis
M47
NGC 2422
Easy
Rich open cluster
Open Cluster mag 4.4 2.9° Puppis
R CMa
Medium
Eclipsing binary, period 1.1d
Variable Star mag 5.70 3.0° Canis Major
M46
NGC 2437
Easy
Open cluster
Open Cluster mag 6.1 3.4° Puppis
NGC 2438
Hard+
Planetary nebula — try an OIII filter
Planetary Nebula mag 10.0 3.5° Puppis
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