chara:labao_alignment_procedure
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chara:labao_alignment_procedure [2023/09/27 14:55] gail_stargazer |
chara:labao_alignment_procedure [2023/09/27 19:24] (current) gail_stargazer |
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| ====== LabAO Alignment Procedure ====== | ====== LabAO Alignment Procedure ====== | ||
| - | This page is a work in progress. These procedures are based on notes from Theo 9/15/2023. | + | This page is a work in progress. These procedures are based on notes from Theo on 9/15/2023. |
| ===== Setting zero for the WFS ===== | ===== Setting zero for the WFS ===== | ||
| Line 9: | Line 9: | ||
| * Do a full alignment check of the beam in question. Make sure it is hitting the east end target, centered on the DM, and also hitting the BRT target near the secondary and going straight down the delay line rails. This alignment should also ensure the visible and IR beams are going to the right places in the lab. | * Do a full alignment check of the beam in question. Make sure it is hitting the east end target, centered on the DM, and also hitting the BRT target near the secondary and going straight down the delay line rails. This alignment should also ensure the visible and IR beams are going to the right places in the lab. | ||
| * Place a flat mirror where the corner cube normally goes near the BRT primary. There used to be one ready for this, including picomotors that can plug into the spare cables for this in the lab. | * Place a flat mirror where the corner cube normally goes near the BRT primary. There used to be one ready for this, including picomotors that can plug into the spare cables for this in the lab. | ||
| - | * Autocollimate | + | * Autocollimate the flat as best as you can. Ultimately it should send the light through the pin hole in the laser source. I used to use the theodolite to at least make sure it put the spot in the same place as the corner cube. |
| - | * Make a copy of the old/ | + | * Make a copy of the old / |
| * You can then use the green laser on the wfs to zero the boxes and save the positions. Make sure you are looking at the correct set of boxes, you want the ones for on-sky, not the reference ones. | * You can then use the green laser on the wfs to zero the boxes and save the positions. Make sure you are looking at the correct set of boxes, you want the ones for on-sky, not the reference ones. | ||
| * Block the light from the auto-collimated mirror and open the S2WFS shutter for the scope and change over the the reference box positions. You might want to move the reference mirror to center the spots but I hope not. You can then ZERO the boxes for the reference position. | * Block the light from the auto-collimated mirror and open the S2WFS shutter for the scope and change over the the reference box positions. You might want to move the reference mirror to center the spots but I hope not. You can then ZERO the boxes for the reference position. | ||
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| ===== Measuring a new Reconstructor ===== | ===== Measuring a new Reconstructor ===== | ||
| - | The simple answer is to use the blue beacon after having carefully checked the alignment. This assumes that the focus, as determined by the lab WFS, is correct. This focus includes both the OPLE and the BRT alignments, but since we assume that anyway while observing it's probably OK. Other than that follow the same procedure Matt describes for the scope AO system. | + | The simple answer is to use the blue beacon after having carefully checked the alignment. This assumes that the focus, as determined by the lab WFS, is correct. This focus includes both the OPLE and the BRT alignments, but since we assume that anyway while observing it's probably OK. Other than that follow the same procedure Matt describes for the {{: |
| If you don't believe the BRT and/or OPLE are properly aligned (and they probably aren' | If you don't believe the BRT and/or OPLE are properly aligned (and they probably aren' | ||
chara/labao_alignment_procedure.1695840930.txt.gz · Last modified: 2023/09/27 14:55 by gail_stargazer
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