M51 Whirlpool Galaxy


Mark Griffith

Swindon, Wiltshire. UK

Celestron C11 Sct, Skywatcher NEQ6 pro mount,Atik 383L+ camera, motorised filter wheel and Astronomik filters.

Spiral galaxy colliding with it’s companion galaxy, only 30 million light years away in the constellation of canes venatici.

My favourite spiral galaxy to image as it is bright and you always capture lots of dust lane detail and red star forming regions.

Kept my telescope at F10, to frame the whirlpool with a small field of view, to create a high resolution image.

Deep sky stacker was having trouble finding eight bright stars with 5 minute exposures so it could stack the sub frames. Increasing exposure times to 7.5 minutes solved this issue.

Data from four nights. 24th, 25th, 28th January and 8th February 2015.

LRGB image with 7 hours and 07 minutes of data. 27 Lum 11 red 10 green 9 blue x 7.5 min minute exposures.