M 51 is a spiral galaxy in Canes Venatici about 31 million light years from earth. It interacts gravitationally with its smaller companion on the left (NGC 5195). The image shows quite some more galaxies in the background much further away.

Acquisition Details

Scope: Borg 90FL/500 with 1.08x Flattener
Filter: None
Camera: ZWO ASI 2600MC Pro
Mount: Skywatcher HEQ5 Pro
Guiding Scope: MiniBorg 50
Guiding Camera: ZWO ASI 290MM
Guiding Software: PHD2
Acquisition Software: APT
Light Frames: 35x180sec
Flats, Dark Flats, Bias, Darks
Camera settings: Gain 100, Offset 20
Half moon
Bortle 4-5
Acquisition Date: Feb 21, 2021

Processing

Stacking Software: DSS
Imaging: PixInsight