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Star Queen nebula — Open Cluster in Serpens

IC 4703

Open Cluster Fair (34/100)
Magnitude 6.0m OpenCluster Serpens (Ser) Visible
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1Properties

Magnitude 6.00
Angular Size 5.0′
Position Angle 90°
B, eL, Cl M16 inv

Position & Identifiers

RA 18h 18m 56.2s
Dec -13° 50' 43.4"
Constellation Serpens (Ser)
Catalog IC 4703

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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125x TFOV: 0.4° Lim. mag: 13.6
N E

Star Queen nebula · 5.0′ 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.

M16
Eagle Nebula
Medium+
Emission nebula — try an OIII filter
Emission Nebula mag 6.4 0.0° Serpens
NGC 6605
Easy
Rich open cluster
Open Cluster mag 6.0 1.2° Serpens
NGC 6625
Easy
Open cluster
Open Cluster mag 9.0 2.1° Scutum
NGC 6631
Hard+
Open cluster
Open Cluster mag 12.0 2.7° Scutum
M18
NGC 6613
Easy
Rich open cluster
Open Cluster mag 6.9 3.3° Sagittarius
IC 1287
Medium+
Reflection nebula around a bright star
Reflection Nebula mag 6.10 4.3° Scutum
M24
Small Sagittarius Star Cloud
Easy
Bright star cloud
Star Cloud mag 2.5 4.7° Sagittarius
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