The Globular Cluster Gallery, taken with Fresno State's Campus Observatory, largely by students

M5, globular cluster in Serpens
M5, globular cluster in Serpens
, 11x15-s ST-8 exposures at f/6.3 by F. Ringwald.

M13, the Great Globular 
Cluster in Hercules
M13, the Great Globular Cluster in Hercules
, full-color (L 11 x 20s, R 5 x 20s, G 5 x 20s, B 9 x 20s, all through a Hutech IDAS light-pollution filter) ST-9XE image at f/6.3 by F. Ringwald, processed by Nathan Siemens.

M22, globular cluster in Sagittarius
M22, globular cluster in Sagittarius
, 8x20-s ST-8 exposures at f/10 by John Prigge.

M2, globular cluster in Aquarius
M2, globular cluster in Aquarius
, 15x5-s ST-8 exposures at f/10 by Greg Morgan, John Prigge, and Gabe Reyna.

M56, globular cluster in Lyra
M56, globular cluster in Lyra
, full-color (L 11 x 20s, R 5 x 20s, G 5 x 20s, B 9 x 20s, all through a Hutech IDAS light-pollution filter) ST-9XE image at f/6.3 by F. Ringwald, processed by Michael Ragsdale.

M71, globular cluster in Sagitta
M71, globular cluster in Sagitta
, 10x15-s ST-8 exposures at f/10 by John Prigge.

M15, globular cluster in 
Pegasus
M15, globular cluster in Hercules
, full-color (L 11 x 20s, R 5 x 20s, G 5 x 20s, B 9 x 20s, all through a Hutech IDAS light-pollution filter) ST-9XE exposures at f/6.3 by F. Ringwald, processed by Steve Rodriguez.

M3, globular cluster in Canes 
Venatici
M3, globular cluster in the constellation Canes Venatici (the Hunting Dogs)
, full-color (L 11 x 20s, R 5 x 20s, G 5 x 20s, B 9 x 20s, all through a Hutech IDAS light-pollution filter) ST-9XE exposures at f/6.3 by F. Ringwald, processed by Steve Rodriguez.

M92, globular cluster in 
Hercules
M92, globular cluster in Hercules
, full-color (L 11 x 20s, R 5 x 20s, G 5 x 20s, B 9 x 20s, all through a Hutech IDAS light-pollution filter) ST-9XE exposures at f/6.3 by F. Ringwald, processed by Steve Rodriguez.


M72, globular cluster in 
Aquarius
M72, globular cluster in Aquarius
, full-color (L 11 x 20s, R 5 x 20s, G 5 x 20s, B 9 x 20s, all through a Hutech IDAS light-pollution filter) ST-9XE exposures at f/6.3 by F. Ringwald, processed by Sean Marzolf.


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Last updated 2024 April 26. Web page by Professor Ringwald (ringwald[at]csufresno.edu and replace [at] with @)
Department of Physics, California State University, Fresno. Please read this disclaimer.