|The spiral galaxy NGC 3184 in the
constellation Ursa Major on March 23 / 24 and April 14 / 15, 2015. The galaxy is approximately 40 million light years from Earth and was
discovered by William Herschel in 1787.
Thirty-two 3 minute exposures at ISO 800 with no dark frame subtraction were stacked with Deep Sky Stacker (resulting in a 1 h 42 min exposure)
and further processed in Photoshop.
|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).