This image was captured on August 29th 2019 at approximately 3:30UT.  Io's shadow had just began to transit Jupiter's lower limb.

  EQUIPMENT

  CAMERA:  ZWO ASI 120mm videocam.

  TELESCOPE:  Celestron C9.25 (235mm) SCT @ F/25.

  MOUNT:  Celestron CGE Pro

  BARLOW:  2.5x Telvue powermate.

  FILTERS:  Baader RGB.

  SOFTWARE:  Registax V6, Photoshop CS3.