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    Default ACP/ACPS Loss Time With Each Plan

    Hello Bob--

    Tom K. & I have been working to identify the reason for 13 sec of time loss with each ACPS observing plan with our Paramountís - here is an example:

    00:27:02 Calculated field of view (arcmin): H = 25.8 V = 17.2
    00:27:02 Using focus offsets from FilterInfo.txt <==
    00:27:15 ACPS Observation #131235 - ER UMa_Obs_001 Follow-up <==
    13 sec consumed by some activity

    I found the smoking gun which is below and have made a small change to AcquireSupport to declare c_haveTrackOffset = True (Paramount) and eliminated the test for offset tracking.

       Telescope.RightAscensionRate = 0.01                ' Try offset tracking
        If Err.Number = 0 Then                                      ' Assume if we can change RA rate, we can change Dec rate
            c_haveTrackOffset = True                              ' We have it!
            Telescope.RightAscensionRate = 0.0             ' But make sure it's turned off
            Telescope.DeclinationRate = 0.0
            c_haveTrackOffset = False                             ' Cannot apply tracking offsets
        End If
    Digging further, TheSky driver has the following wait times which are required for the Paramount according to notes in the TheSky driver.

    Telescope.RightAscensionRate (5 sec wait)
    Telescope.DeclinationRate (2 sec wait)

    Here is an example with my changes to AcquireSuppot:
    20:18:09 Calculated field of view (arcmin): H = 25.8 V = 17.2
    20:18:09 Using focus offsets from FilterInfo.txt <==
    20:18:09 ACPS Observation #98540 - AR And <==

    I thought I would pass this along for the next ACP update as I believe this could affect every user that uses TheSky driver. Perhaps there should be a one-time test at start up with results saved in the registry.....

    Steve Brady
    Last edited by Bob Denny; Mar 21, 2011 at 23:21. Reason: reformat for visibility in web browser



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