Star clusters

Facts and images about the gravitationally-bound collections of stars known as star clusters, including globular clusters and open clusters.

Messier 7 by Luis Fernando Parmegiani, São Paulo, Brazil. Equipment: GSO RC8

Gallery Open star clusters

M35 and NGC 2158 by Jaspal Chadha, London, UK. Equipment: Skywatcher Espirt 100ED, QSI 690 CCD, Ioptron CEM60 Mount, LRGB.

Gallery Messier 35 and NGC 2158

M39 by William McSorley, Leeds, UK. Equipment: SW 150P Reflector, EQ5 GoTo Mount, QHY8L cooled CCD, SW ST80, Philips SPC900 webcam.

Gallery Messier 39

M37 Open Cluster by Ron Brecher, Guelph, Ontario, Canada. Equipment: SBIG STL-11000M, Baader RGB filters, 10

Gallery Messier 37

M34 by Jaspal Chadha, London, UK. Equipment: TAK 130, iOptron CEM60 Mount, QSI 690 CCD

Gallery Messier 34

NGC457 - The ET Cluster in Cassiopeia by Bill McSorley, Leeds, UK. Equipment: SW 150P Newtonian, EQ5 GoTo Mount, QHY8L cooled ccd.

Gallery Owl Cluster

Globular cluster Omega Centauri is thought to contain about ten million stars. These ancient objects may not be as old as once thought. Credit: ESO

Gallery Omega Centauri globular cluster

M44 - Behive Cluster (

Gallery Beehive Cluster

M3 in Canes Venatici. Credit: Manfred Wasshuber / CCDGuide.com

Gallery Messier 3

Double Cluster by Jaspal, London, UK. Equipment: Takahashi FSQ85, Ioptron 45 pro, QHY9s CCD, Chroma Filters.

Gallery Perseus Double Cluster

NGC 7789 Caroline's Rose by Mark Griffith, Swindon, Wiltshire, UK. Equipment: Teleskop service 12

Gallery Caroline's Rose Cluster

The Pleiades Stephen Tolley, Liskeard, Cornwall, 19 January 2020 Equipment: Nikon D600 DSLR, Tamron 150-600mm lens, Celestron AVX mount

Gallery The Pleiades

M13 Great Hercules Cluster by Mark Griffith, Swindon, Wiltshire, UK. Equipment: Teleskop service 12

Gallery Hercules Globular Cluster

Located in the constellation of Pegasus, 35,000 lightyears away, M15 is one of the oldest-known globular clusters – dating back 12 billion years. Hubble captured the swarming hot blue and cooler golden stars that become more concentrated towards M15’s bright core. Credit: ESA, Hubble, NASA

Observing guide Globular clusters