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Collinder 428 — Open Cluster in Cygnus

Open Cluster Good (49/100)
Magnitude 8.7m OpenCluster Cygnus Visible
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1Properties

Magnitude 8.7
Angular Size 10 arcmin
Open Cluster

Position & Identifiers

RA 21h 03m 12.0s
Dec +44° 34' 60.0"
Constellation Cygnus
Catalog Cr 428

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 Jul – Sep (peak: Aug)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

Collinder 428 · 10.0′ diameter

5 Best Magnification

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.

North America Nebula
NGC 7000
Medium+
Emission nebula — try an OIII filter
Emission Nebula mag 5.0 0.8° Cygnus
NGC 6997
Easy
Open cluster
Open Cluster mag 10.0 1.2° Cygnus
60 Cyg
Hard+
Hot blue O-type star
Double Star mag 5.37 1.6° Cygnus
NGC 7039
Easy
Open cluster
Open Cluster mag 7.6 1.7° Cygnus
NGC 7044
Medium+
Open cluster
Open Cluster mag 11.0 2.8° Cygnus
IC 1369
Easy
Rich open cluster
Open Cluster mag 6.8 3.5° Cygnus
W Cyg
Easy
Semi-regular variable, range 5.1–6.8
Variable Star mag 5.53 5.9° Cygnus
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