
Messier 33 (Triangulum Galaxy)
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- M33 – one of the largest and nearest galaxies to the Milky Way.
o - It lies only about 2.4 million light‑years away, making it one of the closest major spiral galaxies to us.
o - Extremely active star formation – M33 has a very high star‑formation rate, around ten times higher than Andromeda’s ten times higher than Andromeda’s, making it a laboratory for studying how stars are born.
o - A possible future participant in the Milky Way ~ Andromeda collision M33 may be gravitationally linked to Andromeda and could play a role in the future merger between Andromeda and the Milky Way in around 4 billion years times.
o - One of the oldest galaxies visible to the naked eye in exceptionally dark skies.
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- Object Name
Messier 33
- Object Type
Galaxy
- Constellation
Triangulum
- Magnitude
+5.7
- Distance
2.4 million light-years
- Age
12 million years old
- Annotated

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Equipment
Telescope:
Mount:
Accessory:
Sky-Watcher Esprint 80ED Triplet
Sky-Watcher AZ-EQ6 GT
ZWO ASIair Plus / PixInsight
Camera:
Guiding:
Filter:
ZWO ASI585MC Pro cooling
ZWO ASI1200MM
Askar ColourMagic 6nm
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Bortle Scale: Kelling Heath, Weybourne, North Norfolk (Bortle 4.1)
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Integration
- Date:
Friday 19th September 2025
o - Time:
23:15
- Moonlit:
Waning Crescent 27 days old
Magnitude: -9.8
Moonlit: 7%
- Total:
180’s x 45 subs = 2 hours 15 minutes
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Constellation :- Triangulum (The Triangle)

Object :-
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Object :-
Other name :-
Type :–
Magnitude :–
Distance :-
Constellation :-
Right Ascension :-
Declination :-
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M34
NGC 598 / Triangulum Galaxy
Spiral Galaxy (Class: Sc)
+5.7
2.4 million light years / 50,000 light years across
Tri (Triangulum / The Triangle)
01h 33m 09s
+30° 39′ 17″
Enlarge on click the map.

(Click the map above for a large view.)
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| Abbreviation: Tri (Triangulum) |
| English Name: The Triangle |
| Genitive: Ras al Muthallath |
| Hemisphere: Northern Hemisphere |
| Location: Between the constellations of Aries and Andromeda. |
| Visible between latitudes: +90 and -50 degrees |
| Best season: Autumn/Winter |
| Seen in three seasons: Autumn, Winter and Spring |
| Best seen in: Late October / Early December |
| Seen between: October and December |
| Right Ascension (RA): 02 hour |
| Declination (DEC): +30 degrees |
| Area (square degrees): 132 (78th) |
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NGC 604
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- Inside Messier 33 is a gigantic glowing cloud of gas called NGC 604.
o - It is a massive star-forming factory that is a whopping 50 times bigger than the famous Orion Nebula in our own galaxy.
o - Under a super dark, clear night sky far away from city lights, it is one of the most distant things in the entire universe you can spot M33 & NGC 604 with just your bare eyes.
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