Observe
1Properties
Magnitude
10.3
Angular Size
5.1 arcmin
F* inv in eF, vL neb
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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. | Hard+ | Hard | V. hard+ |
| 150 mm Newton 150mm Newt. | Medium | Medium | Hard+ |
| Celestron C8 (203 mm SCT) C8 203mm | Medium | Medium | Medium |
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
Aug – Oct
(peak: Sep)
4
Eyepiece View
5
Best Magnification
Explore
6
Surface Brightness
7
Size Comparator
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.
Chaph
HIP 746; Beta Cassiopeiae; 11 Cassiopeiae
Bright naked-eye star, mag 2.3
Star
mag 2.27
1.4°
Cassiopeia
NGC 129
Rich open cluster
Open Cluster
mag 6.5
1.5°
Cassiopeia
V640 Cas
Tight double — a rewarding split at 1.5″
Double Star
mag 5.96
2.0°
Cassiopeia
V373 Cas
Variable star, range 5.9–6.3
Variable Star
mag 6.00
3.8°
Cassiopeia
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