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LX200 GPS and PHD2

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#1 mackiedlm

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Posted 18 January 2020 - 11:23 AM

Does anyone have experience with LX200 GPS and PHD2 guiding.

I am using the latest Meade Gereric ASCOM driver and PHD2 is able to talk to the mount (it can get guide rates etc) but guide pulses are not reaching the scope. I tried manual guiding as per the troubleshooting guide and get the "guide pulse failed" message.


Any ideas?

Thanks

David



#2 Jim Davis

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Posted 18 January 2020 - 11:31 AM

Yes, we do this at our observatory. How have you wired this? Do you have your computer connected directly to the mount or are you using the ST4 cable from the camera? If you are using an ST4 cable, did you select "on camera" for the mount in PHD2?



#3 mackiedlm

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Posted 18 January 2020 - 11:34 AM

Yes, we do this at our observatory. How have you wired this? Do you have your computer connected directly to the mount or are you using the ST4 cable from the camera? If you are using an ST4 cable, did you select "on camera" for the mount in PHD2?

Hi thanks,

 

It is connected directly to the computer via the usb-serial interface which I use for autostar suite.



#4 Jim Davis

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Posted 18 January 2020 - 11:52 AM

I assume you have the guide camera and select "Meade LX200GPS/R (ASCOM)". Have you clicked on the brain (to the right of the slider at the bottom of the screen? This brings up Advanced Setup. Have you filled out the Calibration Focal Length? Click on the Advanced button and fill in the focal length to calculate calibration steps.



#5 mackiedlm

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Posted 18 January 2020 - 11:58 AM

The driver I am using is a new one which is identified on the ascom site as "Meade Autostar/Audiostar Project (pre-release June 2019)"

 

Can I ask  if you are using the one identified as "Meade LX200GPS and LX200R (combined telescope/focuser, 5.0.0, Jan 2008)"



#6 Jim Davis

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Posted 18 January 2020 - 12:16 PM

The driver I am using is a new one which is identified on the ascom site as "Meade Autostar/Audiostar Project (pre-release June 2019)"

 

Can I ask  if you are using the one identified as "Meade LX200GPS and LX200R (combined telescope/focuser, 5.0.0, Jan 2008)"

Yes, we are using the Jan 2008 one. I have not tried the June 2019 version. Not sure if that one is for the LX200 GPS.



#7 mackiedlm

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Posted 18 January 2020 - 12:20 PM

Thanks, it says it is but I have just downloaded the 2008 one and it seems to be sending guide pulses now. still a bit to work out I think.

#8 Jim Davis

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Posted 18 January 2020 - 02:55 PM

Good luck.


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