NGC 3521 LRGB 915 60 60 60 total 18 hours 15 minutes
FLI Proline 16803,Planewave CDK17,Astrodon Gen 11 filters
Taken from my home observatory over several months in NSW Australia. Of interest in this image is the extended halo of stars around the galaxy not normally shown in images and the fainter rings of the spiral galaxy that extend further out than normally seen.
full exif