guiding log analysis

Discussion in 'Demo User Tech Support' started by richard payne, Dec 28, 2017.

  1. richard payne

    richard payne Standard User

    Joined:
    Dec 26, 2017
    Messages:
    5
    Here is my setup, STL11000,Tak 106,AP 400GTO, 1x drive speed,
    calibrates beautifully, min move is .04,max move is .3
    Y axis was turned of for this test which is Dec. I noticed the X axis would slowly increase
    the errors as it was guiding. Any suggestions? Could turning off the Y axis be an issue?
    It is polar aligned pretty well.




    Calibration Speed X, Y, Angle: -26.911909, -47.684330, -2.340376
    UT Time, Star X, Star Y, OffsetX, OffsetY, Corr X, Corr Y, Bright
    01:57:28, 1241.59, 1030.35, 1.21, -86.93, -0.20, 0.00, 6078
    Track Log Started at UT 2017-12-28 01:58:39
    01:58:39, 183.16, 557.48, 0.92, 0.27, -0.20, 0.00, 14552
    01:58:49, 183.16, 557.51, 0.95, 0.24, -0.20, 0.00, 14204
    01:58:59, 183.36, 557.33, 0.68, 0.23, -0.18, 0.00, 11413
    01:59:09, 183.53, 557.18, 0.45, 0.21, -0.12, 0.00, 12731
    01:59:19, 183.60, 556.62, 0.00, 0.55, 0.00, 0.00, 12299
    01:59:29, 183.56, 556.28, -0.21, 0.82, 0.05, 0.00, 11247
    01:59:39, 183.37, 556.32, -0.05, 0.93, 0.00, 0.00, 10637
    01:59:49, 183.34, 556.52, 0.11, 0.81, 0.00, 0.00, 12668
    01:59:59, 183.04, 556.60, 0.38, 0.97, -0.08, 0.00, 15473
    02:00:09, 182.93, 556.34, 0.27, 1.23, -0.06, 0.00, 12690
    02:00:19, 182.79, 556.20, 0.27, 1.42, -0.06, 0.00, 10911
    02:00:29, 182.91, 556.63, 0.49, 1.04, -0.11, 0.00, 16274
    02:00:39, 182.63, 556.84, 0.84, 1.10, -0.19, 0.00, 12894
    02:00:49, 182.93, 557.43, 1.05, 0.46, -0.20, 0.00, 12961
    02:00:59, 182.97, 557.35, 0.96, 0.50, -0.20, 0.00, 12625
    02:01:09, 182.99, 557.13, 0.80, 0.64, -0.18, 0.00, 12876
    02:01:19, 183.31, 557.08, 0.54, 0.44, -0.12, 0.00, 14694
    02:01:29, 183.36, 556.93, 0.40, 0.51, -0.09, 0.00, 15243
    02:01:39, 183.12, 556.86, 0.51, 0.72, -0.12, 0.00, 16980
    02:01:49, 183.30, 556.54, 0.16, 0.82, 0.00, 0.00, 14932
    02:01:59, 183.28, 556.42, 0.08, 0.92, 0.00, 0.00, 12252
    02:02:08, 183.13, 556.66, 0.36, 0.86, -0.08, 0.00, 17484
    02:02:18, 183.14, 556.54, 0.27, 0.94, -0.06, 0.00, 15785
    02:02:28, 183.07, 556.89, 0.57, 0.74, -0.13, 0.00, 13234
    02:02:38, 183.48, 557.04, 0.39, 0.35, -0.09, 0.00, 12993
    02:02:48, 183.41, 557.46, 0.74, 0.10, -0.17, 0.00, 12144
    02:02:58, 183.63, 557.59, 0.68, -0.15, -0.16, 0.00, 11318
    02:03:08, 183.52, 557.70, 0.84, -0.14, -0.19, 0.00, 14977
    02:03:18, 183.85, 557.67, 0.59, -0.36, -0.13, 0.00, 17880
    02:03:28, 183.84, 556.94, 0.07, 0.15, 0.00, 0.00, 15496
    02:03:38, 183.57, 556.93, 0.25, 0.36, -0.07, 0.00, 14500
    02:03:48, 183.50, 556.92, 0.29, 0.42, -0.08, 0.00, 16565
    02:03:58, 183.28, 556.92, 0.44, 0.57, -0.13, 0.00, 20192
    02:04:08, 183.40, 556.75, 0.24, 0.60, -0.07, 0.00, 16596
    02:04:18, 183.45, 556.83, 0.26, 0.51, -0.07, 0.00, 16728
    02:04:28, 183.46, 556.82, 0.25, 0.51, -0.07, 0.00, 16123
    02:04:38, 183.26, 557.18, 0.64, 0.41, -0.19, 0.00, 15530
    02:04:48, 183.80, 557.25, 0.32, -0.03, -0.09, 0.00, 11548
    02:04:58, 183.91, 557.48, 0.40, -0.27, -0.12, 0.00, 14054
    02:05:08, 183.83, 557.32, 0.34, -0.10, -0.10, 0.00, 12242
     
  2. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    3,501
    Am just another customer - any reason you turned off Y (DEC) corrections?
     
  3. richard payne

    richard payne Standard User

    Joined:
    Dec 26, 2017
    Messages:
    5
    Hi, It was doing the same thing with Y (Dec) running, It was just an experiment to see if anything changes with it off.
    No change at all with X by itself.
    Richard
     
  4. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    6,893
    Your log doesn't show that, but I assume you only included a small portion.

    If the calibration isn't absolutely perfect, the increasingly deviating Y axis will slowly contaminate the X axis.
     
  5. Bob Denny

    Bob Denny Cyanogen Customer

    Joined:
    Oct 12, 2014
    Messages:
    800
    Location:
    DC-3 Dreams, SP, Mesa, Arizona +1 480 396 9700
    Could the guider be working against some rather large periodic error? It might be worth checking PE.
     

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