I recently took this narrowband image of the pelican nebula. The exposure was just over 18 hours in total, split approximately 6 hours for each of S2 (mapped to red), Ha (mapped to green) and OIII (mapped to blue).
It was taken during May and June 2010, through my IKI ED 70mm (with a 0.67 astrophysics focal reducer) with a SXVR-H9, guided through a skywatcher ST80 and SX loadstar. On an EQ6 Pro, in a pulsar 2.1m observatory in my back garden in Hornchurch, Essex.
