Occultation of UCAC4 411-133446 by (420) Bertholda on 2022-12-04 Green O+: Gerard VAUDESCAL Optics: T250 | Method: VID | Duration: 4.90 -0.01,43.21,0 Green O+: Yves Argentin Optics: M3050 | Method: VID | Duration: 4.64 -0.06,43.14,0