M51 whirlpool galaxy in Ursa Major 30'th, 31'th of March, 1'st and 2'nd of April 2013
Orion Optics VX12 F4 working at F8 with TeleVue 2x Powermate 2 Inch, SBIG ST-4000XCM -25C 7h10min (43x600sec).
Light travel time: 37 mill years.
Processing: CCDSoft, Astroart 5.0.
Log of CCD Inspector:
A number of frames were dropped due to too high FWHM.