iOptron ASCOM Driver and Commander for CEM40/GEM45

Updated 10/16/2021
Minimum Requirement for this driver:
  • Direct mount control: Windows 7 SP1 /8.1 /10/11 with .NET (dotNET) Framework 4.8 or later installed.
  • Planetarium control via ASCOM: ASCOM Platform 6.5 SP1 and above
  • If new ASCOM/Commander does not work properly, please remove the Commander and reinstall it again

CEM40/GEM45 mounts have two ASCOM driver/Commanders based on firmware versions. Please check your mount before downloading.

For CEM40/GEM45 with mount firmware version V20210105 or later
Commander and ASCOM Driver Installer (V7.0.0.0, 10/16/2021)
ASCOM 7.0 Update Notes
CEM40/GEM45 (USB) Commander and ASCOM Application
iOptron Control Command Language 2014 V3.1

For CEM40/GEM45 with mount firmware version earlier than V20210101
(uses ASCOM driver and commander V5.7.5.0)
Commander and ASCOM Driver Installer (V5.7.5.0)
ASCOM 5.7 Update Notes
CEM40/GEM45 (USB) Commander and ASCOM Application
iOptron Control Command Language 2014 V2.5