Hello all.
Though the skies were clear and temperature only around 8 degrees, burning off smoke haze made the sky quite bright and light polluted. I wanted to shoot longer subs and highlight the hydrogen emission areas in M83 so used the UHC-S filter which Id normally only use on emission nebulae, not other galaxies.
Image is 7 x 20 minutes ISO 400. Hand guided as usual with no dec corrections in most of the subs, truly amazing how accurately SharpCap can get polar alignment spot on, even taking atmospheric refraction into account. 10 inch F5.6 scope, Modded 350D camera, Baader MPCC coma corrector.
Full sized version here
https://www.astrobin.com/408084/
Scott