The spiral galaxy Messier 104 (Sombrero Galaxy, NGC 4594) in the
constellation Virgo on April 15 / 16, 2015. The galaxy is approximately 30 million light years from Earth and was
discovered by Pierre Méchain in 1781 (source: Wikipedia).
Twenty-one 3 minute exposures at ISO 800 with no dark frame subtraction were stacked with Deep Sky Stacker (resulting in a 1 h 7 min exposure)
and further processed in Photoshop. Wind, cirrus clouds and the low position in the sky had an impact on image quality.
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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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