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NGC 1704 — Open Cluster in Dorado

Open Cluster Fair (29/100)
Magnitude 11.5m OpenCluster Dorado (Dor) Visible
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1Properties

Magnitude 11.50
Angular Size 1.7′ × 1.6′
Position Angle 70°
F, pS, lE, r

Position & Identifiers

RA 04h 49m 55.5s
Dec -69° 45' 22.7"
Constellation Dorado (Dor)
Catalog NGC 1704

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 Hard+
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 Oct – Dec (peak: Nov)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 1704 · 1.7′ 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 1702
Hard
Open cluster
Open Cluster mag 12.50 0.1° Mensa
NGC 1711
Easy
Open cluster
Open Cluster mag 10.0 0.2° Mensa
NGC 1751
Hard+
Compact globular cluster
Globular Cluster mag 11.73 0.4° Mensa
NGC 1695
Hard+
Open cluster
Open Cluster mag 12.16 0.4° Dorado
IC 2105
Hard+
Diffuse nebula
Diffuse Nebula mag 11.30 0.6° Dorado
NGC 1756
Hard+
Open cluster
Open Cluster mag 12.24 0.7° Dorado
NGC 1763
Medium+
Emission nebula — try an OIII filter
Emission Nebula mag 9.40 3.4° Dorado
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