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NGC 2140 — Open Cluster in Dorado

Open Cluster Fair (29/100)
Magnitude 12.4m OpenCluster Dorado (Dor) Visible
Star Map
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1Properties

Magnitude 12.44
Angular Size 1.5′
pF, pS, iR, bM

Position & Identifiers

RA 05h 54m 16.2s
Dec -68° 35' 59.3"
Constellation Dorado (Dor)
Catalog NGC 2140

2How easy to spot?

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

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

Medium on Seestar S50

3Visibility

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Best season Nov – Jan (peak: Dec)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 2140 · 1.5′ diameter

5 Best Magnification

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6 Classification Decoder

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