
Messier 34 (Open Cluster)
- A group of open cluster stars that formed from the same giant cloud of gas. Think of it as a cosmic sibling group, all born at the same time, all travelling through space together.
o - Messier 34 looks big in the sky, but in space it’s a medium‑sized star cluster with a few hundred stars spread across about 15 light‑years.
o - Visible as a faint hazy patch to the naked eye in very dark conditions.
o - Easily resolved into stars with binoculars or small telescopes.
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- Object Name
M34
- Object Type
Open Cluster
- Constellation
Perseus
- Magnitude
+5.2
- Distance
1,400 light-years
- Age
190 million years old
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Equipment
Telescope:
Mount:
Accessories:
Sky-Watcher Esprint 80ED Triplet
Sky-Watcher AZ-EQ6 GT
ZWO ASIair Plus / PixInsight
Camera:
Guiding:
Filter:
ZWO ASI585MC Pro cooling
ZWO ASI1200MM
2″ Optolong eNchance
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Bortle Scale: Milton Keynes, Buckinghamshire (Bortle 6)
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Integration
- Date:
Wednesday 24th September 2026
o - Time:
22:45 / 11.45 pm (BST)
- Moonlit:
Waxing gibbous 12 days old
Magnitude: -12.4
Moonlit: 83%
- Total:
180’s x 10 subs = 30 minutes
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Constellation :- Perseus (The Hero)

Object :-
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Object :-
Other name :-
Type :-
Magnitude :–
Distance :-
Constellation :-
Right Ascension :-
Declination :-
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M34
NGC 1039
Open Cluster
+5.2
1,400 light years / 14 light years across
Per (Perseus / The Hero)
02h 42m 04s
+42° 47′ 22″
Enlarge on click the map.

(Click the map above for a large view.)
| Abbreviation: Per (Perseus) |
| English Name: The Hero |
| Genitive: Mirfak |
| Hemisphere: Northern Hemisphere |
| Location: Between the constellations of Camelopardalis and Andromeda. |
| Visible between latitudes: +90 and -35 degrees |
| Best season: Winter |
| Seen in three seasons: Summer, Autumn & Winter |
| Best seen in: December (This constellation of Perseus stays in the sky all the year.) |
| Seen between: August and April |
| Right Ascension (RA): 03 hour |
| Declination (DEC): +45 degrees |
| Area (square degrees): 615 (24th) |
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How Big Is Messier 34 Compared to the Moon?

- Size in the sky
M34 looks slightly larger than the Moon — about 15 % wider.
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