Observe
1Properties
Magnitude
—
Angular Size
3.3′
glob. cl. , vF, S, eC
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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. | Imp. | Imp. | Imp. |
| 150 mm Newton 150mm Newt. | Imp. | Imp. | Imp. |
| Celestron C8 (203 mm SCT) C8 203mm | Imp. | Imp. | Imp. |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
Out of reach for typical amateur telescopes, even at Bortle 3.
3Visibility
Set a location in User Settings to see visibility data.
Best season
Aug – Oct
(peak: Sep)
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 103
Open cluster
Open Cluster
mag 9.8
0.8°
Cassiopeia
NGC 189
Open cluster
Open Cluster
mag 8.8
1.1°
Cassiopeia
NGC 129
Rich open cluster
Open Cluster
mag 6.5
1.3°
Cassiopeia
NGC 225
Open cluster
Open Cluster
mag 7.0
1.5°
Cassiopeia
IC 10
Galaxy
Galaxy
mag 10.3
2.6°
Cassiopeia
WZ Cas
Semi-regular variable, range 6.8–7.7
Double Star
mag 6.90
3.8°
Cassiopeia
NGC 281
Emission nebula — try an OIII filter
Emission Nebula
mag 7.0
5.6°
Cassiopeia
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