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NGC 6631 — Open Cluster in Scutum

Open Cluster Fair (36/100)
Magnitude 12.0m OpenCluster Scutum (Sct) Visible
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1Properties

Magnitude 12.0
Angular Size 5.7′
Cl, pL, pRi, st 12...15

Position & Identifiers

RA 18h 27m 12.0s
Dec -12° 01' 60.0"
Constellation Scutum (Sct)
Catalog NGC 6631

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Hard V. hard+ V. hard
150mm Newt. Medium Hard+ Hard
C8 203mm Medium+ Medium 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 May – Jul (peak: Jun)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 6631 · 5.7′ diameter

5 Best Magnification

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6 Classification Decoder

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