Object: Constellation: Coordinates: Size: Brightness:
NGC 4361 Crv 12h25m / -1847' 2.1' x 2.1' 10.9mag

The planetary nebula NGC 4361 in the constellation Corvus on April 13, 2018. NGC 4361 is approximately 2500 light-years from Earth and was discovered by German British astronomer William Herschel in 1785 (source: Wikipedia).

Twenty-three exposures of 3 minutes at ISO 800 were stacked with no dark frame subtraction with Deep Sky Stacker (resulting in a 1 h 9 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).



Search chart for NGC 4361. Map © 2018 "The Mag-7 Star Atlas Project", www.siaris.net. Map is modified.
The Mag-7 Star Atlas Project map can be downloaded here .