With a full moon in the sky last night was a test session for my new IR block filter and the Geoptik Canon lens adapter. Back focus is at a premium with this system with only 7-8mm to squeeze a filter into. The new filter appears to be slightly too thick but was within a whisker of achieving focus so there may be hope yet. Swapping the filter out I refocussed on Sadr and took 10 3 minute exposures at 135mm. A heavy crop of the field removed the worst of the background gradient introduced by the moon but some artifacts of this remain after processing.
