Telescope Mak-Cas 0.3m f/5.6, CCD Sbig STL-6303, BVRI filters
Exp: 180s
Binning: 1x1 (1.15 arcsec/pixel).
Meridian flip: no, session started already flipped.
Moon: 49%, rises at 21:30 at about 120 degrees.
Sky: clear; seeing 2/5.
Defocus: none, initial FWHM ~ 4.6 arcsec.

Telescope Mak-Cas 0.3m f/5.6, CCD Sbig STL-6303, BVRI filters
Exp: 180s
Binning: 1x1 (1.15 arcsec/pixel).
Meridian flip: no, session started already flipped.
Moon: 49%, rises at 21:30 at about 120 degrees.
Sky: clear; seeing 2/5.
Defocus: none, initial FWHM ~ 4.6 arcsec.

Celestron SCT 280/2800 Atik 314L+ red. 0,63x
Adopted limb darkening: 0.5 | EXP. 90s | binning 1+1 | slight defocus | FWHM 11.1 px (8.4 arc-sec/pixel) | weather: clear, dry air | bortle 5, encircling light pollution | Moon ill. 82.5%, distance 43° | Photometric aperture radii: 12-22-27

MARK Meade SCT 406/4060 + CMOS ZWO ASI 1600mm pro
Adopted limb darkening: 0.5 | EXP. 120s | defocus | weather: clear | bortle 7 strong light pollution | binning 4x hw, 4x sw | FWHM 2 px (6.2 arc-sec/pixel) | Photometric aperture radii: 5.27-20-30 | Toptec J-C Rc filter