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Lesedi

3,650 bytes removed, 11:24, 14 February 2023
/* Backup autoguiding procedure */
# Click "INITIALISE" to return the XY-slides to the home position.
# In the terminal running the web server, press CTRL-C to kill the process.
 
=== Backup autoguiding procedure ===
 
Users have occasionally encountered repeated loss of connectivity that makes it difficult to use the browser control for autoguiding. In this case, you can interact directly with the backend software by following the instructions below.
 
# Connect to ioserver1 via remote desktop, e.g. for Linux use the Remmina client, set the server to ioserver1.suth.saao.ac.za and enter the username and password from the Lesedi User Resources Google document.
# Once connected to ioserver1, the autoguider software should be running. If it isn't, or if it fails to respond, follow [[#Autoguider troubleshooting|these instructions]].
 
'''To start guiding''':
 
# On the main autoguider GUI, if using Mookodi select Slide 0; or Slide 1 for Sibonise.
# If the status of any of the error codes (Err, XLL, XUL, YLL or YUL) is 1, click RESET, then INITIALISE. "FAKE" should always be a green "Fake is OFF" button while guiding - this is a test function for engineering purposes.
# To start continuous exposures with the autoguider Lodestar camera, enter a number (~2 seconds) in the box on the right, and click CONTINUOUS. Binning should be set to 2x2. To get a workable look-up table, on the left-hand side of the main autoguider GUI, move the uppermost vertical slider ~1/6 of the way from the bottom. Leave the other two sliders in their default positions (lower vertical slider halfway up; lower horizontal slider all the way to the left; upper horizontal slider all the way to the right).
# Enter the target coordinates (using spaces as delimiters, e.g. 12 34 56 -76 54 32) in the separate GS_FC window and click "Set".
# Check that a finder chart loads showing your field. Guide stars are to be selected from outside the green box in the finder chart image. When North is Up in the Mookodi/Sibonise image, click on a star in the upper half of the image to use as a guide star.
<!--, with X<20000 and Y<15000. As Y increases it begins to vignette the Mookodi field, so try to choose a guide star at low Y.-->
# On the XY Slide Control section of the main GUI, click "Goto GS". This will send the XY slides to the position you clicked on the finder chart. <!--If it doesn't, read the coordinates of the guide star off the image and enter them manually; when the position is reached click "Pick guide star" and click on your chosen star in the guide camera image.-->
# Click the "Pick G_Star" button in the "Guiding" panel, which will turn dark blue to indicate that it's ready to receive your guide star selection.
# Choose a star in the Lodestar image and click on it. The "Pick G_Star" button will turn green if it recognises the star. If the button turns grey, your selection has been unsuccessful and you will need to click the "Pick G_Star" button again and then try clicking on a different star.
# Click the red GUIDE button - it should turn green to indicate that it has started guiding.
 
'''If guiding fails''' at any point during a track (e.g. due to cloud), the button will turn red. Try increasing the exposure time (change the value and click "CONTINUOUS") and click GUIDE if the star is sill near the box. If the star has drifted, you can either offset the telescope to bring it back to its original position and then click GUIDE, or if it is not important to you to keep the target in the original position on the science image, you can repeat the guide star selection procedure to resume guiding in the post-drift position.
 
'''To stop the autoguider:'''
# Click "GUIDE" to stop guiding.
# Click "STOP CONT." to stop exposing.
# Click "Initialize" to return the XY-slides to the home position.
=== Autoguider troubleshooting ===
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