Guide module nudges scope in RA at start of calibr - by: dokeeffe

Hi,
Just wondering if anyone else has experienced this behaviour. It only happens first time pressing calibrate, second time is ok.

• I go to the guide module, click capture and the fits viewer appears.
• Click on a star that looks good for calibration.
• The green box appears around the star, all good.
• I click the calibrate button to start calibration and instantly, the star gets pushed out of the box always to the right about 2 or 3".
• Calibration will fail at this point but I usually cancel it.
• Cick the star in its new location again to select it.
• Click calibrate and this time its ok, It starts the calibration process.

Other than this strangeness the guiding is perfect.
I'm using an ASI120MM guide camera and guiding via the handset of my Celestron CPC1100

Thanks,
Derek