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1 | Tracking
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2 | |
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3 | When the telescope is tracking (and only during that), it propagates
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4 | some tracking related information through the dim-network. This page
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5 | shows the values of the latest received report.
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6 |
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7 | The control deviation is the deviation measured between the shaft-encoder
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8 | position at the telescope axis and the command position by the controller.
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9 | Theoretically, real mispointing could be larger due to additional
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10 | bending of the structure.
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11 |
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12 | If a dedicated source is tracked, a source name is displayed. If
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13 | the moon is above the horizon, the distance to the moon is displayed.
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14 |
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15 | The colors represent
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16 | <ul class='help'>
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17 | <li>No moon light is directly hitting the G-APDs</li>
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18 | <li>The distance is very close to the direct or indirect field-of-view of the cones.</li>
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19 | <li>The moon is within th efield-of-view. This condition should be avoided as much as possible.</li>
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20 | </ul>
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21 |
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22 | <i>Note that the color scales are not well motivated as of today. Anybody
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23 | is invited to investigate this issue in more details.</i>
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24 | |
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25 | |<h4>Graphics</h4>
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26 | The graphics display the history of the control deviation. Note that it
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27 | is only updated during tracking and the time axis is just simply binned,
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28 | <I>i.e.</I> that one point represents one service update and they need
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29 | not to be equidistant in time.
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30 | |
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