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NGC 1664 — Open Cluster in Auriga

Open Cluster Excellent (62/100)
Magnitude 7.6m OpenCluster Auriga (Aur) Visible
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1Properties

Magnitude 7.6
Angular Size 11.4′
Cl, lRi, lC, pL

Position & Identifiers

RA 04h 51m 05.4s
Dec +43° 40' 34.3"
Constellation Auriga (Aur)
Catalog NGC 1664

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 Oct – Dec (peak: Nov)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 1664 · 11.4′ 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.

NGC 1605
Medium+
Open cluster
Open Cluster mag 10.7 3.3° Perseus
NGC 1582
Easy
Open cluster
Open Cluster mag 7.0 3.5° Perseus
NGC 1724
Easy
Open cluster
Open Cluster mag 10.0 6.2° Auriga
Collinder 62
Easy
Open cluster
Open Cluster mag 4.2 6.4° Auriga
IC 2067
Hard+
Diffuse nebula
Diffuse Nebula mag 11.49 9.1° Perseus
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