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Collinder 350 — Open Cluster in Ophiuchus

Open Cluster Good (58/100)
OpenCluster Ophiuchus Visible
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1Properties

Magnitude 6.1
Angular Size 39 arcmin
Open Cluster

Position & Identifiers

RA 17h 48m 06.0s
Dec +01° 18' 00.0"
Constellation Ophiuchus
Catalog Cr 350

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 May – Jul (peak: Jun)

4 Eyepiece View

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50x TFOV: 1.0° Lim. mag: 13.6
N E

Collinder 350 · 39.0′ diameter · N up, E left

5 Best Magnification

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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.

NGC 6426
Medium
Globular cluster — dense ball of ancient stars
Globular Cluster mag 11.2 1.9° Ophiuchus
Collinder 359
Easy
Open cluster
Open Cluster mag 3.0 3.6° Ophiuchus
IC 4665
Easy
Open cluster
Open Cluster mag 4.2 4.4° Ophiuchus
Y Oph
Medium
Pulsating variable, period 17.1d
Variable Star mag 6.21 7.5° Ophiuchus
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