Celestron SCT 280/2800 Atik 314L+ red. 0,63x
Adopted limb darkening: 0.5 | EXP. 90s | binning 1+1 | defocus | FWHM 22.5 px (17,7 arc-sec/pixel) | weather: clear, moisture | bortle 5, encircling light pollution | Photometric aperture radii: 14-28-34 | Moon illumination: 79%, distance: 37°