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--- chara:trouble_shooting [2023/07/06 07:50]
gail_stargazer
+++ chara:trouble_shooting [2023/07/27 20:10]
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@@ Line 195: / Line 195: @@
 S2's acquisition server resides on "S2pi4" computer. Logging on to it (ssh s2pi4) and running bootlaunch will restart it
+==== Focusing the Telescope ====
+  - Fully align beacon to labao and TWFS, especially making sure the focus terms between the two agree very well.
+  - Open a secondary gui: mergurygtk W2_SECONDARY.
+  - Note the current M2 actuator positions and send them to Nic for the log.
+  - Turn off the beacons and lock the star on TWFS tiptilt.
+  - Turn the servo on in the mercurygtk gui.
+  - On the align tab of the wfsgtk there is a button for FOCUS SCOPE.
+  - Press the button.
+  - When done the focus term of starlight on the TWFS should be zero.
+  - Turn off the servo on the mercury_gtk gui.
+A couple of notes:
+  * If large moves of M2 are made, tiptilt tracking may be lost. Pay careful attention so that M2 doesn't get driven away crazily due to lost light.
+  * If it takes too long to start the autofocus procedure, the mercury_gtk servo will automatically turn off and nothing will happen. So just make sure the servo is on right before hitting the FOCUS SCOPE button.
 ===== Dome issue =====

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