Whirlpool Galaxy, M 51, NGC 5194
Object: Interacting Grand-design Spiral Galaxy (SA(s)bc pec)
Constellation: Canes Venatici
Apparent Magnitude: 9.0
Est. Distance: 23 Mly
Wikipedia link

Telescope: Orion EON 80mm ED
Camera: QHY-8
Guidescope: Orion EON 80mm ED with Off-axis guider
Guider: DMK 21AU04 with PHD2
Exposure: 32x900 sec (8h)
Date: 28th February - 2 March 2017

Telescope: Orion EON 80mm ED
Camera: QHY-8
Guidescope: Celestron CPC 800 EQ Mount (with Wedge)
Guider: Skyris 236M with PHD2
Exposure: 24x300 sec (3h)
Date: 27st January 2017

Telescope: Celestron CPC 800 EQ Mount (with Wedge)
Camera: QHY-8
Guidescope: Orion EON 80mm ED
Guider: DMK 21AU04 with PHD Guiding
Exposure: 36x300 sec (3h)
Date: 21st February 2009

Telescope: Celestron CPC 800 (8")
Camera: Nikon D70 unmodified
Exposure: 128x30 sec (64 mins)
ISO: 1600
Date: 30th April 2008

Annotated Version