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SHANEAO Problem: WFS focus, WFS Y, WFS Y / Galil 7 Amplifier Fault
Manifestation:
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WFS focus, WFS Y, WFS Y report disabled.
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saomot1, saomot3 services require re-start.
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saomot7 service dies.
Solution/Recovery: Level 1
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Lock stages:
In ShaneAO motor control GUI:
Actions, Lock stages...;
Unselect all.
Select
WFS focus,
WFS X
&
WFS Y.
Add entry to explanation field (e.g. "Trouble report 12779").
Select Lock.
-
Allow locked stages to cool:
Wait a judicious amount of time (e.g. several hours).
For the interim, use workaround script on shimmy:
/u/user/observers/lgs/scripts/objsky.tcl <Nexposures> <Xloops>
This script takes N exposures on axis with the loops closed,
opens the loops,
moves the telescope 30 arcseconds
and takes either N or 3 (whichever is less) sky frames,
then goes back on axis and closes loops,
repeats X times.
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Power-cyle, re-calibrate and re-set locked stages:
Power-cycle Galil 7 via ShaneAO Power Controls
(saomot_gui) GUI,
(outlet [C7]),
with an unpowered phase of circa 30--60 seconds.
Following restoration of power, re-calibrate:
WFS X,
WFS Y,
(WFS focus).
Ensure motors are ON.
Following re-calibration, set:
WFS X = -1290,
WFS Y = -7725,
(WFS focus = -20).
Enable motion in ShaneAO motor control GUI (saomot_gui)
and ShARCS wheel control GUI (saowheels_gui).
In ShaneAO motor control GUI:
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Ensure Lenslet (re-)set to 16x or 8x.
-
Ensure Orientation (re-)set to OnTelescope.
-
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Services
saomot1,
saomot3
and
saomot7
may require re-start.
Solution/Recovery: Level 2 (if level 1 attempt unsuccessful).
-
Master re-set of Galil 7 may be required.
-
Consider operating for the remainder of science nights,
with motors locked in their on-axis positions.
Thus regular dithering scripts will not work.
Use work-around script on shimmy:
/u/user/observers/lgs/scripts/objsky.tcl <Nexposures> <Xloops>
This script takes Nexposures on axis with the loops closed,
opens the loops, moves the telescope 30 arcseconds and takes either
N or 3 (whichever is less) sky frames, then goes back on axis and
closes loops, repeats Xloops times.
Cause:
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Motor temperatures excessive?
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Disruption to network connection between Galil 7 and dispatchers,
disabling motors because of lack of heartbeat signal?
Associated:
Change Log:
- 2022-07-08: Updated.
- 2022-06-27: Updated.
- 2022-05-14: Updated.
- 2022-04-XX: Updated.
- 2022-01-XX: First version.
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