Observe
1Properties
Magnitude
9.0
Angular Size
6.0′
Cl, lC, lRi, st 11...12
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Position & Identifiers
2How easy to spot?
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Easy | Medium+ |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) C8 203mm | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
Easy
on Seestar S50
3Visibility
Set a location in User Settings to see visibility data.
Best season
May – Jul
(peak: Jun)
4
Eyepiece View
5
Best Magnification
Explore
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 6631
Open cluster
Open Cluster
mag 12.0
1.1°
Scutum
M16
Eagle Nebula
Emission nebula — try an OIII filter
Emission Nebula
mag 6.4
2.1°
Serpens
Star Queen nebula
IC 4703
Rich open cluster
Open Cluster
mag 6.00
2.1°
Serpens
IC 1287
Reflection nebula around a bright star
Reflection Nebula
mag 6.10
2.4°
Scutum
NGC 6649
Open cluster
Open Cluster
mag 8.9
3.0°
Scutum
NGC 6605
Rich open cluster
Open Cluster
mag 6.0
3.3°
Serpens
NGC 6517
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 10.3
6.0°
Ophiuchus
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Article
Scutum
Mythology, bright stars, and deep-sky highlights.
Constellation
Venus
Phases, transits, and the brightest planet in the sky.
Deep dive
