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The globular cluster Messier 13 in
Hercules. This cluster of stars lies about 25,100
light-years from Earth and is about 145 light-years
in diameter. It contains approximately 100,000
stars. More information about Messier 13
can be found here.
This
image is a stacked set of six 30-second images
captured using a 10-inch Newtonian telescope with
2x Barlow lens coupled to a Canon 350D camera.
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A wider field image of Messier 13
without the Barlow lens in place. .
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Wide field image of the area around
Messier 13. To view this image in
Google Maps click here.
This
is a stacked set of about 6 30-second images
captured using 10-inch Newtonian telescope
coupled to a Canon 350D camera.
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An
image of the cluster showing the location of the
galaxy NGC 6207. The galaxy is far more distant
than the cluster. More information about NGC 6207
can be found here. A version
of this image with grid coordinates superimposed
can be found here.
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Another image of the area around
Messier 13 in Hercules using film instead of a
digital camera. This is a 20 minute
exposure through a 10-inch Newtonian telescope on
Fuji ISO 800 35mm color negative film.
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This image was captured on film
using an I-cubed image intensifier. The exposure
time was approximately 1 second. .
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