galacticsights

astrophotography

Whirlpool Galaxy, M51

2018-03-23, 2017-05-25 / Image Details (Click on image to enlarge)

he Whirlpool Galaxy, M51, is a grand design spiral galaxy located in the constellation of Canes Venatici. It is one of the most famous galaxies in the sky, appearing face-on when viewed from Earth. M51 has a much smaller dwarf companion, known as NGC 5195, and together they form the finest and most studied example of an interacting galaxy pair in the sky. The M51 lies in a distance of 23 million light years from the Earth and has a diameter of 75'000 light years.


"The color difference between the two images is caused by using different color calibration methods in Pixinsight. The bluish image is the result of the PhotometricColorCalibration.."

Technical Details

LocationZollikerberg, Switzerland
CameraNikon DSLR D810A
TelescopeSkywatcher Quattro 8CF 200 DS Fibre OTA Newton Carbon
Special LenseSkywatcher Newtonian F4 Coma Corrector
MountSkywatcher AZ-EQ6
AutoguidingLacerta MGEN2 (Autoguiding, Dithering)
FocuserLacerta MFOC Motorfocuser
Planetarium SoftwareStellarium
Image Session ControlAPT - Astro Photography Tool v3.5, ASCOM Platform 6
Lights59 x 120s // 58 x 120s (total 3h54'), ISO-1600, additional Biases, Flats, no Darks
Stacking SoftwarePixinsight 1.8, Bayer Drizzle 2x
Image ProcessingPixinsight 1.8

2017-05-25 / Earlier Version, part 1 of the above image


"The Whirlpool Galaxy is best seen in the northern hemisphere from April to May."

Technical Details

LocationZollikerberg, Switzerland
CameraNikon DSLR D810A
TelescopeSkywatcher Quattro 8CF 200 DS Fibre OTA Newton Carbon
Special LenseSkywatcher Newtonian F4 Coma Corrector
MountSkywatcher AZ-EQ6, EQASCOM, Stellarium
AutoguidingLacerta MGEN2 (Autoguiding, Dithering)
Camera ControlDigicamcontrol (Focus, Camera Control)
Lights56 x 120s (1h52'), ISO-1600, additional Biases, Flats, no Darks
Stacking SoftwarePixinsight 1.8, Bayer Drizzle 2x
Image ProcessingPixinsight 1.8