The Earth-Centered Universe

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This discussion group is devoted to users of The Earth Centered Universe (ECU) planetarium and telescope control software.

ECU is supported on the following versions of Windows:
  • 2000, XP, Vista, (32 and 64-bit versions),and 10
  • (Legacy versions of ECU are supported in Window 95, 98, Me, NT)
  • (It also works, but is not formally supported in MacOS X and Linux using the Wine emulator)
The List Owners are Michael J. Cook and Dave Lane.

ECU is available at

This discussion group is for:
  • Exchanging ECU tips, tricks and traps
  • Troubleshooting ECU telescope control
  • Discussing uses for ECU
  • Developing User Object Files for ECU (see
  • Developing Orbit Files for ECU
  • Developing Object List Files for ECU
  • Developing Image Files for ECU
  • Discussing enhancements to ECU

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