50 Panel Cygnus Mosaic of Hydrogen-Alpha data by Kees Scherer – this 50 panel mosaic has a total registration RMS error of only 0.11 pixels thanks to a new and completely rewritten mosaic algortihm with solves the entire mosaic calculation in only 1 highly non-linear Trust Region Newton based calculation in which almost 1000 parameters are found to get a flawless mosaic… – Details, Skywatcher 100 Esprit APO f5.5 on a 10Micron GM2000HPS II with a QHYCCD QHY16200A Mono camera. Roughly 48 hours of Hydrogen Alpha exposures. – Seams and illumination differences between the panels are corrected automatically with the LNC + MBB algortihms.