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It's saying your computer was unable to connect to the serial port that Gemini was configured for. That could be as simple as the serial cable is unplugged, or Gemini is not powered on. Other things to check is that in your PC, open the Device Manager and check to see if the serial port you are using is reporting any errors. You probably are using a USB-to-Serial converter so it is also possible that failed; try a different one if you have one.

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One other suggestion: if you are using a Gemini-2, you may find it easier to connect with a network cable instead of serial. There are instructions around that explain how to do that, even if your PC isn't on a LAN.

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Good luck (I hope this translates cleanly to French for you; my French is no where good enough to try to write the above),

-Joe

Hi,

Thanks Joe for your answers.

To answer your suggestions and to complete my information:

The error notified appears when I want to point my telescope at a target with the Prism software mapping while the telescope moves correctly with the software's hand controller or that of the Gemini.

So I don't think it's a problem with the USB cable, converter, or port?

I don't know where to turn anymore.

I also uninstalled the ascom platform as well as the ascom gemini and reinstalled them.

Best regards.

Jean-Bernard.

On Fri, Jan 17, 2025 at 09:16 AM, Jean-Bernard PIOPPA wrote:

Hi,

Thanks Joe for your answers.

To answer your suggestions and to complete my information:

The error notified appears when I want to point my telescope at a target with the Prism software mapping while the telescope moves correctly with the software's hand controller or that of the Gemini.

So I don't think it's a problem with the USB cable, converter, or port?

I don't know where to turn anymore.

I also uninstalled the ascom platform as well as the ascom gemini and reinstalled them.

Best regards.

Jean-Bernard.

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Maybe don't blame the well tested and proven Gemini.net ASCOM driver?? Could you try a different app to GOTO?? Maybe Stellarium or other popular? planetarium app?? I have been using the Gemini.net ASCOM with other apps like SGP, NINA and ASIAIR and GOTOs are perfectly fine.?

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