© Alan Fowler
Friday, 31 July 2015
0.558m reflector with paracorrector at prime focus, crossed polars, Canon 5D3. Tv mode, 15 frames, ISO 1000, 1/1000s, f/4.2, Tv mode
Darks and frames stretched to 16bits, normalised, calibrated, registered and stacked (Sigmafit) in Regim(1). Mare regions enhanced with using blue gradient fill in Photoshop CS, simulating visual effect of crossed polars.