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NGC 4103 — Open Cluster in Crux

Open Cluster Good (51/100)
Magnitude 7.0m OpenCluster Crux (Cru) Visible
Star Map
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1Properties

Magnitude 7.0
Angular Size 7.8′
Cl, pL, pC, iR, st 10...14

Position & Identifiers

RA 12h 06m 42.0s
Dec -61° 15' 00.0"
Constellation Crux (Cru)
Catalog NGC 4103

2How easy to spot?

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

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

Easy on Seestar S50

3Visibility

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Best season Feb – Apr (peak: Mar)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 4103 · 7.8′ diameter

5 Best Magnification

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6 Classification Decoder

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