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Every table includes three extra columns which are computed for DCT based on the current time; Air Mass, Azimuth, Elevation and ElevationTime of Transit. These columns are provided to aid the observer in target selection and are time dependent. A re-sort of any of the columns causes the data to be recalculated and the updated values are shown.
The Air Mass column can also be computed for a specified time of day. Right clicking on the table brings up the dialog box for entering the time (local) for the calculation. The column will be refreshed and the font color changes to blue to indicate that the air mass is not for current time. Re-sorting any of the columns will override the calculations and reverts back to current air mass.
The tooltips for all the computed column headers show the time when the calculation was performed.
Inline Editing
The first displayed line in the table (ID=0) is basically a blank like to offer the user the opportunity to send a target to the TCS that was not included in the input file. All the columns except ID and the computed columns are editable but one has to make sure that the edited column has been accepted by the app.
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As with other cases, it is essential to double check the values in the top panel before sending the target to the TCS. The act of editing does not cause the target to be selected and the edits are not reflected in the top panel automatically. In order to select the edited target one has to click on another row and then click back on the edited row to select it.
Sky Plot
Clicking on the "Sky Plot" button brings up a polar plot of AZ vs EL (north is up) for the current table. Selecting a target on the plot highlights the row on the table. One has to remember that this plot is time dependent and the Update button will refresh it with current values.
Example Input Data
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