|Object name:||Constellation:||Coordinates:||Apparent size:||Visual brightness:|
|Messier 106 (NGC 4258)||Canes Venatici||12h19m / +47°18'||18.6' x 7.2'||8.4 mag|
The intermediate galaxy Messier 106 (NGC 4258) in the constellation Canes Venatici. Messier 106 is at a distance of 22 to 25 million light-years away from Earth. It contains an active nucleus classified as a Type 2 Seyfert (narrow emission lines). Messier 106 was discovered by Pierre Méchain in 1781 (source: Wikipedia).
Sixty-five 3-minute exposures (191 minutes total exposure) at ISO 800 taken on April 4 / 5, 2021 and on April 8, 2021 were added for this shot with the DeepSkyStacker software and the final image processing was done in Photoshop.
Equipment: Nikon D7500 Lifepixel h-alpha 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.