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NGC 2203 — Open Cluster in Mensa

Open Cluster Fair (29/100)
Magnitude 11.3m OpenCluster Mensa (Men) Visible
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1Properties

Magnitude 11.29
Angular Size 3.2′
F Cl

Position & Identifiers

RA 06h 04m 42.0s
Dec -75° 25' 60.0"
Constellation Mensa (Men)
Catalog NGC 2203

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 Medium
C8 203mm Easy 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 2203 · 3.2′ 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.

IC 2146
Hard+
Open cluster
Open Cluster mag 12.41 1.8° Mensa
NGC 2173
Hard+
Compact globular cluster
Globular Cluster mag 11.88 2.5° Mensa
NGC 1944
Medium
Open cluster
Open Cluster mag 11.84 4.2° Mensa
NGC 2025
Medium+
Open cluster
Open Cluster mag 10.94 4.3° Mensa
NGC 2000
Hard+
Open cluster
Open Cluster mag 12.14 4.4° Mensa
NGC 2012
Hard+
Elliptical galaxy
Galaxy mag 12.97 4.9° Mensa
NGC 2018
Medium
Emission nebula — try an OIII filter
Emission Nebula mag 10.89 5.0° Mensa
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