My Astrophotography – Messier 92

Messier 92 (Globular Cluster)

  • Messier 92 is approximately 14.2 billion years old, making it one of the oldest globular clusters in the Milky Way.
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  • It contains more than 330,000 stars tightly bound together by gravity.
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  • While it is exceptionally brilliant, it is often called a “forgotten” cosmic showpiece because it sits in the shadow of its larger and more famous neighbour, the Great Hercules Cluster (Messier 13).

  • Object Name
    M92

  • Object Type
    Globular Cluster

  • Constellation
    Hercules

  • Magnitude
    +6.5

  • Distance
    28,000 light-years

  • Age
    14.2 million years old

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Equipment

Telescope:

Mount:

Accessories:

Sky-Watcher Esprint 80ED Triplet

Sky-Watcher AZ-EQ6 GT

ZWO ASIair Plus

Camera:

Guiding:

Filter:

ZWO ASI2600MC Pro cooling

ZWO ASI1200MM

Optolong L-eXtreme

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Bortle Scale: Milton Keynes, Buckinghamshire (Bortle 6.3)
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Integration

  • Date:
    Monday 31st August 2026
  • Moonlit:
    Waning Gibbous 19 days old
    Magnitude: -12.6
    Moonlit: 84%
  • Total:
    180’s x 7 subs = 21 minutes

    Stopped at 21 minutes due the clouds interrupted.

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Constellation :- Hercules (The Hercules)

Object :-

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Object :-

Other name :-

Type :-

Magnitude :

Distance :-

Constellation :-

Right Ascension :-

Declination :-

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M92

NGC 6341

Globular Cluster

+6.5

28,000 light years / 110 light years across

Her (Hercules / The Hercules)

17h 17m 10s

+43° 08′ 23″

Enlarge on click the map.

(Click the map above for a large view.)

Abbreviation:  Her (Hercules)
English Name:  The Hercules
Genitive: Rassalgethi
Hemisphere: Northern Hemisphere
Location: Between the constellations of Lyra and Corona Borealis.
Visible between latitudes:  +90 and -50 degrees
Best season: Summer
Seen in three seasons: Spring, Summer, and Autumn
Best seen in:  Early July (map)
Seen between: April and December
Right Ascension (RA): 17 hour
Declination (DEC): +30 degrees
Area (square degrees):  1,225 square degrees (5th)

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Visibility to the Naked Eye

  • Boasting an apparent visual magnitude of 6.3, M92 is so bright that it can actually be glimpsed with the unaided human eye under exceptionally dark, pristine sky conditions.
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