Lyon centre, France
Skywatcher 120ED, Skywatcher 80ED side-by-side
SXVR-M25C OSC, Atik 460EX mono
Astronomik UV/IR cut filter
Astrodon 3nm Ha filter
Another tricky image from a light polluted city centre. A SW120ED with an SXVR-M25C took the colour data 2 hours 20 minutes with a UV/IR cut filter only. A SW80ED took the Ha, with an Atik 460EX fitted with a 3nm Astrodon Ha filter, 2 hours 40 minutes.