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    UlteriorModem's Avatar
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    Default Re: CEM60 PEC & Guiding



    My experiences with PEC has been similar, even with the CGX-L. Guiding is much better without it using PHD. So I don't bother with it anymore.
    Scopes: Orion 130mm APO Triplet, Orion 8" f4 astrograph, 10" RC Mount: Celestron CGX-L Guiding: Orion 60mm f4 scope, Starlight Loadstar, PHD2 software - Cams: Planetary: ASI120mc, DSO:Atik 383L+, SGPsoftware Processing : Regisax, Deep Sky Stacker, Star Tools, Pixinsight Assistant: One very large cat
    ~ Put your money where your mount is ~


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  2. #12
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    Default Re: CEM60 PEC & Guiding

    Dear Gerrit,

    I'm also a CEM60 owner. Though I've not tried PE curve recording yet, it seems that there is something missed in the manual. As PE is an intrinsic characteristic of worm-gear, it should not be mixed with corrections from PHD2 guiding. According to Craig Stark's information, the guiding should be disabled during PE recording. So, the procedure is as follows.
    1) Execute PHD2 and do calibration with a star (whose declination is nearly "0" degree is recommended)
    2) Stop guiding and open 'Advanced setup' window
    3) In the guiding tab, uncheck "Enable mount guide output" in Shared Parameters category.
    By doing this, PHD2 will not issue guide pulse(correction data) and chase a guide star but keep data logging enabled.
    The logged data will be the PE what you want.
    4) Start guiding
    5) The following procedure will be the same with the iOptron manual.

  3. #13
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    Default Re : CEM60 PEC & Guiding

    I had read about the incompatibility of the CEM60 PEC and PHD2 about a year or so ago when I got my CEM60. Recently, after the last firmware updates, I decided to try again and for my surprise it does look like it's working fairly well.
    Here is what I did:
    - Recorded and enabled PEC.
    - Ran guiding assistant with PEC on.
    Guiding is improved and something else I noticed is that auto guiding settling after dithering is much faster.

 

 
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