Melotte 15 (Mel 15)
- Melotte 15 is the young, powerful star cluster at the very centre of the Heart Nebula (IC 1805), about 7,500 light‑years away in Cassiopeia.
- Object Name
Mel 15
- Object Type
Open Cluster
- Constellation
Cassiopeia
- Magnitude
6.5
- Distance
7,500 light‑years
- Annotated
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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 ASI2600MC Pro cooling
ZWO ASI1200MM
2″ Optolong L-eNhance
Bortle Scale: Milton Keynes, Buckinghamshire (Bortle 6.6)
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Integration
- Date:
Tuesday 10th October 20234
- Moonlit:
Waning Crescent 26 days old
Magnitude: -12.4
Moonlit: 14%
- Total:
180‘s x 20 subs = 1 hour
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Constellation :- Cassiopeia (The Queen)
Object :-
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Object :-
Designations :-
Type :-
Magnitude :–
Distance :-
Constellation :-
Right Ascension :-
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Mel 15
(IC 1805 – Heart Nebula)
Open Cluster
6.5
7,500 light years / 30 light years long
Cas (Cassiopeia / The Queen)
02h 33m 22s
+61° 26′ 36″
Enlarge on click the map.
(Click the map above for a large view.)
| Abbreviation: Cas (Cassiopeia) |
| English Name: The Cassiopeia Queen |
| Genitive: Schedar, sometimes spelt Shedar or Shedir. |
| Hemisphere: Northern Hemisphere |
| Location: Between the constellations of Andromeda and Cephus. |
| Visible between latitudes: +90 and -20 degrees |
| Best season: Autumn |
| Seen in three seasons: Summer, Autumn and Winter |
| Best seen in: November |
| Seen between: Circumpolar (This constellation of Cassiopeia stays in the sky all the year.) |
| Right Ascension (RA): 01 hour |
| Declination (DEC): +60 degrees |
| Area (square degrees): 598 (25th) |
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Facts about Melotte 15 (Open Cluster)
- Melotte 15 is a very young star cluster inside the Heart Nebula.
o - Its huge, hot stars blow strong winds that shape the gas around them, making pillars and caves.
o - It is about 7,500 light‑years away and only 1.5 million years old.
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