The globular cluster Messier 3 (NGC 5272) in the constellation Canes Venatici
on April 29 / 30, 2016. Messier 3 is 34'000 light-years from Earth, contains around 500'000 stars and was discovered by Charles Messier
in 1764 (source: Wikipedia).
Nineteen exposures of approximately 3 minutes and five exposures of approximately 1 minute at ISO 800 were combined with no dark frame
subtraction with Deep Sky Stacker (resulting in a 1 h 12 min exposure) and further processed in Photoshop.
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Equipment: Canon EOS 450D Baader modified camera, TeleVue Paracorr Type II coma corrector,
16" f/4.5 "Ninja" dobsonian telescope riding on a dual-axis Tom Osypowski equatorial platform,
Lacerta MGEN autoguider, Lacerta off axis system (field of view comparison:
image of the moon with the same equipment).
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