Occultation of 4UC 401-129671 by (1909) Alekhin on 2021-09-18 Green O+: Karel Halir Optics: M507 | Method: VID | Duration: 1.63 13.60,49.75,0 Green O+: Michal Rottenborn Optics: M254 | Method: CCD | Duration: 1.49 13.33,49.71,0 Green O+: Jiri Polak Optics: M303 | Method: CCD | Duration: 1.49 13.32,49.69,0 Green O+: Jiri Kubanek Optics: M150 | Method: CCD | Duration: 1.29 12.69,49.49,0 Green O+: Jiri Kubanek Optics: M200 | Method: VID | Duration: 1.41 12.68,49.44,0 Green O+: Bjoern Kattentidt Optics: M279 | Method: VID | Duration: 1.48 12.22,48.99,0 Green O+: Gregor Krannich Optics: M350 | Method: CCD | Duration: 1.40 10.85,48.09,0 Green O+: Manfred Simon Optics: M203 | Method: CCD | Duration: 1.69 10.63,47.90,0