small steps on a long road ...
Last night weather was permitting minor activities. A little improvement get the mirrors better aligned and slightly improvment on maximum exposure times with little success.. The edge of the images indicates that clearly that sooner or later a coma corrector is required as usualy expected for Newton telescope.
M15/NGC 7078
STL 11000M @ Bin=1
20 Inch Newton, f=2150mm (0.86arcsec / pixel)
Luminance, 8*60s, Dark & Flat corrected, MaximDL-Digital Development Filter FFT-hard
(klick on image for FullHD resolution (if available) - shown in a separate tab)
M27
STL 11000M @ Bin=1
20 Inch Newton, f=2150mm (0.86arcsec / pixel)
Luminance, 10x30s, Dark & Flat corrected, MaximDL-Digital Development Filter FFT-hard
(klick on image for FullHD resolution (if available) - shown in a separate tab)