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Thread: LX90 PHD2 Autoguiding pains!

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    Question LX90 PHD2 Autoguiding pains!



    Good people of the Astro Community, I need help please!

    I am trying to autoguide an LX90 with phd2. It seems the Dec instruction is sent to the RA motor and vice versa and I just cannot seem to get around this. PHD2 will calibrate but reports as 'questionable'.

    I've tried 3 cameras, more leads than you can shake a stick at, both straight and crossover, and patched the handbox (A1F7 v6) a few times now as recommended in another forum.

    Does anyone have any direct experience of this and found a solution please as this is driving (no pun intended) me nuts! I can't think I am the only person to have suffered here?!

    So, for info;

    Meade LX90ACF 8" (on a wedge)
    Finderscope converted to take camera (T7 - ZWO ASI mini unbranded)
    Windows 10, PHD2, Ascom Meade Mount Drivers
    Camera to PC, PC to Handbox, connections all good and working

    So far this year, I have spent most clear nights - and there haven't been many - trying every setting and option I can think of to get this work! Any help and advice would be much appreciated!

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    Default Re: LX90 PHD2 Autoguiding pains!

    Hello and welcome.

    Are you using the ASCOM drivers or an ST-4 cable to run your scope/guide cam/PHD2 setup? Knowing this may help narrow down your problem. At first glance, I always assume it's a cable problem, then go from there.

    Cheers,
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    Default Re: LX90 PHD2 Autoguiding pains!

    Ascom Drivers for Meade. Cable from laptop to handbox. Itried various cables last night, both straight and crossovers :/

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    Default Re: LX90 PHD2 Autoguiding pains!

    Quote Originally Posted by Marcus Antonio View Post
    Ascom Drivers for Meade. Cable from laptop to handbox. Itried various cables last night, both straight and crossovers :/
    I think what JT wants to know is if you control the LX90 via a guide camara's ST4 port or a #505 to RS232 serial to usb port. The fact that you said its connected from laptop to handbox suggest to me that it should be a #505 to rs232 to usb. But then you say: " Itried various cables last night, both straight and crossovers" and that worries me. The #505 to usb cable is the same type of cable you use to connect Autostar Updater and your Audiostar controller and although the Audiostar is not compatible with autostar updater it can connect to it and that's a clear indication that your cable is fine. you also said: "patched the handbox (A1F7 v6) a few times now as recommended" this means that you must have done the firmware upgrade with StarPatch and a working #505 cable : that's the cable you should use, just like it is.
    Last edited by Piet Le Roux; 03-28-2019 at 05:14 PM.
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