Changes

Lesedi

1,634 bytes added, 15:58, 12 March 2020
/* Acquiring a target */
1. Follow the facility [[#Start-up recipes|start-up procedure]].
2. Check that the selected target is within the [[#Telescope pointing limits|observing limits]]. If you're not sure, or want to find out the exact altaz of your target, you can enter the coordinates into the input boxes on the upper left panel of the Controls tab, then click "Visibility...". This brings up a panel that shows the altitude and azimuth of the target at that moment.
EitherThen/or, either:
3. (a) In the TCS '''Controls''' tab enter the RA, Dec and Equinox into the boxes on the upper left panel and click '''Go'''. The telescope's movement will be plotted on the schematic in the right-hand panel.
or:
4. 3(b) In the TCS '''Controls''' tab click '''Manage Targets''' '''HOW DOES THIS WORK??'''.
5The telescope will slew to the target, and its movement will be plotted in yellow dots on the schematic in the right-hand panel.The "Go" button will become a "STOP" button, which you can click to stop the telescope. Once it reaches the target coordinates, the telescope will start to track and red dots will show the track progress on the visibility plot.
4. The telescope will track the target until you click '''STOP'''. To run SHOC, follow the instructions on the [https://topswiki.saao.ac.za/index.php/SHOC SHOC wiki].
 
5. Focus the telescope using the '''Adjust Focus...''' button, which brings up a box in which you can enter the focus increment. A reasonable starting point for SHOC focus with a filter in the beam is ~2000 - you can check the focus position in the status panel on the Controls tab. A reasonable increment for small adjustments is ~5. Clicking '''+''' or '''-''' then adds or subtracts 5 microns to the focus position.
 
6. Lesedi's pointing is excellent, so your target should land very close to the centre of the SHOC image. The '''image orientation''' with no "flips" applied in the SHOC software (check the Advanced tab of the SHOC control) is North Up, East to the left, when the rotator sky angle is 0, North down, East to the right with a sky angle of 180. '''Add more about rotation.'''
To adjust the pointing (e.g. to position a target and comparison star in the field),
== Autoguiding ==
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