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NGC 2051 — Open Cluster in Mensa

Open Cluster Fair (29/100)
Magnitude 11.7m OpenCluster Mensa (Men) Visible
Star Map
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1Properties

Magnitude 11.69
Angular Size 1.5′
pB, S, R, gbM

Position & Identifiers

RA 05h 36m 07.3s
Dec -71° 00' 41.0"
Constellation Mensa (Men)
Catalog NGC 2051

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Hard Hard V. hard+
150mm Newt. Medium+ Medium Hard+
C8 203mm Medium+ Medium+ Medium
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 2051 · 1.5′ diameter

5 Best Magnification

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6 Classification Decoder

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