Celestron C14 (SCT 356/3910) + red. 0,7x + SBIG ST9XE
Adopted limb darkening: 0.5 | EXP. 90s | binning 1+1 | FWHM 2.1 px (3.5 arc-sec/pixel) | slight defocus | weather: clear, moisture | bortle 5, encircling light pollution | Photometric aperture radii: 6-12-15 | Moon illumination: 86.4%, distance: 27°

PlaneWave CDK 17" & Moravian 4 G
180 sec pics on IR-UV filter