chara:operating_procedures
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| Fill both chambers on the NIRO camera. Use the gloves and glasses provided on the shelf with the funnels and the thermos. It will normally take 1 liter of LN2 in the outer chamber and 1/2 liter in the inner chamber. Fill it until the LN2 bubbles out of the top. This camera is normally kept cool all the time, exceptions will be noted.\\ | Fill both chambers on the NIRO camera. Use the gloves and glasses provided on the shelf with the funnels and the thermos. It will normally take 1 liter of LN2 in the outer chamber and 1/2 liter in the inner chamber. Fill it until the LN2 bubbles out of the top. This camera is normally kept cool all the time, exceptions will be noted.\\ | ||
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| - | Record that you filled the camera in the log book, noting time and camera filled. The typical notation for NIRO is to write FF in the NIRO column to show both chambers were filled. Note that there is a morning and evening filling so follow the pattern. | + | Record that you filled the camera in the log book, noting time and camera filled. The typical notation for NIRO is to write FF in the NIRO column to show both chambers were filled. Note that there is a morning and evening filling so follow the pattern. Note also the vacuum measurement for the MIRCX camera. If you do not observe due to weather, fire or closure, inform someone on the mountain before 2:30 pm so they can fill it for you. |
| 2.3 Alignment of the light path to the telescopes\\ | 2.3 Alignment of the light path to the telescopes\\ | ||
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| For CLIMB 1, CLIMB 2 or CLASSIC, the removable 6-beam target should be placed in the clamps on the CLIMB table. This also applies to aligning CLIMB for fringe finding for PAVO.\\ | For CLIMB 1, CLIMB 2 or CLASSIC, the removable 6-beam target should be placed in the clamps on the CLIMB table. This also applies to aligning CLIMB for fringe finding for PAVO.\\ | ||
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| - | For MIRCX, the same target should be placed in the clamps on the MIRCX table. Place the target to the appropriate table, making sure it seats firmly in the clamps. Cover the labao cameras if the labao server is running. | + | For MIRCX, the same target should be placed in the clamps on the MIRCX table. Place the target to the appropriate table, making sure it seats firmly in the clamps. Cover the labao cameras if the labao server is running. Place the small corner cubes (labeled) on their bases at the BRTs. Make sure they seat firmly and correctly. Open IR shutters, send laser light using VISBEAMS gui to the position you want to check. Use a tablet to bring up Pico 2 gui. Click on icon in the menu or in xterm type: xpico2. Select the appropriate IR mirror for the beam you are about to adjust. For ex: S1IR. The Beam Sampler gui tells you which telescope is in the beam you are aligning. Note that the IR picos move the beam the opposite direction that is labeled. When done for all telescope to be used, remove target and place it above the CLASSIC/ |
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| 2.3.6 M10 Alignment | 2.3.6 M10 Alignment | ||
| - | Go to a computer anywhere to check the beam remotely at the telescopes. Check Vacuum Monitor that the vacuum is below 20 torr. Open telescope gui from pull down menu. Click TV [ON] to open the camera window and click [M10AL] on the control tab to change view to the M10 alignment view, click [M7 open] to open the M7 mirror cover. Center bright spot in beam on the black reference spot. (Note that S2 has a double spot in the center and a single spot to the lower right. The double spot is the correct one.) You may need to adjust the IRIS or the TV brightness to see the bright spot well. [BEAM] cycles the iris from open to closed and gives a good idea of where the center of the spot is. To adjust the position, use Pico 2 to select, for example, E2M10 → [MOVE] (use large steps ~ 100). Note that the up, down, left, and right buttons do no correspond to the actual directions the spot will move. When the spot is centered, click [M7 close] to close the mirror cover * click TV [OFF] to close the window. | + | Go to a computer anywhere to check the beam remotely at the telescopes. Check Vacuum Monitor that the vacuum is below 20 torr. Open telescope gui from pull down menu. Click TV [ON] to open the camera window and click [M10AL] on the control tab to change view to the M10 alignment view, click [M7 open] to open the M7 mirror cover. Center bright spot in beam on the black reference spot. (Note that S2 has a double spot in the center and a single spot to the lower right. The double spot is the correct one.) You may need to adjust the IRIS or the TV brightness to see the bright spot well. [BEAM] cycles the iris from open to closed and gives a good idea of where the center of the spot is. To adjust the position, use Pico 2 to select, for example, E2M10 → [MOVE] (use large steps ~ 100). Note that the up, down, left, and right buttons do no correspond to the actual directions the spot will move. When the spot is centered, click [M7 close] to close the mirror cover * click TV [OFF] to close the window. These alignments can also be done in the control room or by the observer. If they are not done with the other alignments, please let the observer know they need to be done before observing. |
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| 2.4 Final steps in the lab | 2.4 Final steps in the lab | ||
| - | If using CLASSIC or CLIMB, turn on the black box above the NIRO computer, and then turn on the silver box below it on the same cart. Remove cover on camera. Note which filter is reported on the filter wheel. The NIRO CPU has clock troubles so it might be beneficial to power the computer on using the NIRO CPU button Rack 2 on the POWER gui. If all 3 LED's on the back of the computer are lit, with the green LED's blinking slowly and quickly, then the clock is likely correct. | + | If using CLASSIC or CLIMB, turn on the black box above the NIRO computer, and then turn on the silver box below it on the same cart. Remove cover on camera. Note which filter is reported on the filter wheel. The NIRO CPU has clock troubles so it might be beneficial to power the computer on using the NIRO CPU button Rack 2 on the POWER gui. If all 3 LED's on the back of the computer are lit, with the green LED's blinking slowly and quickly, then the clock is likely correct. |
| If using MIRCX/ | If using MIRCX/ | ||
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| All the circle indicators start out grey. | All the circle indicators start out grey. | ||
| - | After the 30 minute warmup, press the Metro button which will power up the Metrology cage, the laser repeater and the oscilloscope. When button indicator is green, you can proceed to the next step. | + | After a 1 minute warmup, press the Metro button which will power up the Metrology cage, the laser repeater and the oscilloscope. When button indicator is green, you can proceed to the next step. |
| Press the Start button near the bottom. This will start up the computers, and the first stage of hardware and takes about 90 seconds to complete. The grey buttons will turn yellow with a blue icon when the computers have started up, but not loaded the drivers yet. They will then turn solid yellow when they are ready for the next step and have loaded all the drivers. (Note: E1 has often failed to start and will need to be powered on manually by the rocker switch behind the right, front cover of the E1 ople computer) | Press the Start button near the bottom. This will start up the computers, and the first stage of hardware and takes about 90 seconds to complete. The grey buttons will turn yellow with a blue icon when the computers have started up, but not loaded the drivers yet. They will then turn solid yellow when they are ready for the next step and have loaded all the drivers. (Note: E1 has often failed to start and will need to be powered on manually by the rocker switch behind the right, front cover of the E1 ople computer) | ||
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| 3.9. Beacon Alignments | 3.9. Beacon Alignments | ||
| - | The beacons wil<font 14px/ | + | The beacons wil<font 14px/ |
| - | In the WFS tab of the telescope GUI or the CONTROL tab of the obsgtk, turn on the red and blue LED’s, open the fiber covers, then beacon flat covers. The CAMERALINK and WFS server are now part of Bootlaunch script and the ANDOR camera power should always be on in the POWER gui. Open M5 and M7 covers. | + | In the WFS tab of the telescope GUI or the CONTROL tab of the obsgtk, turn on the red LED, open the fiber covers, then beacon flat covers. The CAMERALINK and WFS server are now part of Bootlaunch script and the ANDOR camera power should always be on in the POWER gui. Open M5 and M7 covers. The blue beacon is no longer an LED and has been replaced by a tunable laser. |
| - | In the WFS GUI or obsgtk, turn the cooler on (COOL ON) and open the camera shutter (SOPEN) or SHUTTER (OPEN/ | + | In the WFS GUI or obsgtk, turn the cooler on (COOL ON) and open the camera shutter (SOPEN) or SHUTTER (OPEN/ |
| - | Turn on the ACQ camera in the obsgtk. Make sure that the red beacon is going through the hole in the acquisition display. If not, use Beacon UP/DOWN etc buttons on a HUT gui or WFS tab on the obsgtk to move it into the hole. Look for spots to be in boxes on the WFS display. Turn on the boxes on the obsgtk (NOBOX) to see how the alignment is. The boxes may be in the default position or may be moved to a position that worked better when observing. Align to whichever gives a more even illumination of spots in the boxes. As the red beacon is bright, use low gains, ie. 30-50 for the BARE dichroic or 200 for the IR dichroic, to make these alignments. If the red beacon spots on the WFS display are in the boxes, press (ALIGN BEACON) on the ALIGN tab on the TWFS GUI or (ALIGN) TELWFS: on the obsgtk, wait for completion. The default maximum number of tries is 10 so if it is not aligned before it ends, repeat the step if needed. | + | Turn on the ACQ camera in the obsgtk. Make sure that the beacon is going through the hole in the acquisition display. If not, use Beacon UP/DOWN etc buttons on a HUT gui or WFS tab on the obsgtk to move it into the hole. Look for spots to be in boxes on the WFS display. Turn on the boxes on the obsgtk (NOBOX) to see how the alignment is. The boxes may be in the default position or may be moved to a position that worked better when observing. Align to whichever gives a more even illumination of spots in the boxes. As the red beacon is bright, use low gains, ie. 30-50 for the BARE dichroic or 200/300 for the IR dichroic, to make these alignments. If the red beacon spots on the WFS display are in the boxes, press (ALIGN BEACON) on the ALIGN tab on the TWFS GUI or (ALIGN) TELWFS: on the obsgtk, wait for completion. The values should reach zero in both the X and Y axes. The default maximum number of tries is 10 so if it is not aligned before it ends, repeat the step if needed. |
| - | Turn labao camera (ON) and (START) the display. Make a dark with the MKDRK button in the LABAO section of the obsgtk. Turn on the blue beacon. The blue beacon should show spots on the LABAO display. Adjust the FPS lower if they are dim. If the spots are not in the boxes, set the M7 mirror to the default position, then use the DICHROIC buttons on the WFS tab of the telescope gui, obsgtk or HUT gtk to get them in the boxes before using the auto align of the labao. If the spots are inside the boxes, | + | Turn labao camera (ON) and (START) the display. Make a dark with the MKDRK button in the LABAO section of the obsgtk. Turn on the blue beacon. The blue beacon should show spots on the LABAO display. Adjust the FPS lower if they are dim. 100 FPS is the default, but 40 is often used for observing. Set the M7 mirror to the default position, then use the DICHROIC buttons on the WFS tab of the telescope gui, obsgtk or HUT gtk to get them in the boxes. |
| - | If the spots do not show at all in the labao, the scope dichroic is likely out of alignment. Turn on the lab laser and set it to ND 4.0. Use the Dichroic controls to make the laser spots match the blue beacon spots on the ACQ camera view. If they are way off or not visible in the ACQ, you can hit the button for the appropriate dichroic in the HUT gui and it will set the dichroic to its last saved default position. | + | If the spots do not show at all in the labao, the scope dichroic is likely out of alignment. Turn on the lab laser and set it to ND 4.0. Look for additional spots in the ACQ window that are not from the beacon. Use the Dichroic controls to make the laser spots match the blue beacon spots on the ACQ camera |
| - | Note the focus term on both the TWFS and LABAO GUIs or obsgtks. The next steps will minimize both focus terms. Start with the (BEACON FOC) button on the ALIGN tab of the LABAO GUI or (FOCUS) LABAO: on obsgtk, wait until the procedure finishes. Then use the (FOCUS WFS) button on the ALIGN tab of the TWFS GUI or (FOCUS) TELWFS: on the obsgtk and wait for completion. Note that focusing the beacons does not work when the spots are not reasonably centered. Always get the spots well into the boxes first before focusing. Sometimes it helps to repeat the scope dichroic alignment and focus as each needs the other to be close to align well. | + | Note the focus term on both the TWFS and LABAO GUIs or obsgtks. The next steps will minimize both focus terms. Start with the (BEACON FOC) button on the ALIGN tab of the LABAO GUI or (FOCUS) LABAO: on obsgtk, wait until the procedure finishes. Then use the (FOCUS WFS) button on the ALIGN tab of the TWFS GUI or (FOCUS) TELWFS: on the obsgtk and wait for completion. Note that focusing the beacons does not work when the spots are not reasonably centered. Always get the spots well into the boxes first before focusing. Sometimes it helps to repeat the scope dichroic alignment and focus as each needs the other to be close to align well and large changes in the labao focus can put the TWFS out of alignment. |
| See the instruments page for information about starting different instruments at the beginning of the night:\\ | See the instruments page for information about starting different instruments at the beginning of the night:\\ | ||
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| Locking Tiptilt using the telescope WFS | Locking Tiptilt using the telescope WFS | ||
| - | Before locking the star, align the twfs to the red beacon, align the blue beacon to the labao, focus the labao and then focus the twfs. Turn off the red LED and you are ready to lock the star. | + | Before locking the star, align the twfs to the red beacon, align the blue beacon to the labao, focus the labao and then focus the twfs as shown before. Turn off the red LED and you are ready to lock the star. |
| - | To lock the star, hit [MOVE] on the Main Tab of the Telescope GUI and then click the right star to bring the star to the ACQ hole. Turn on the TWFS tiptilt and DM servo on scopes that have it. Make sure the twfs tiptilt spots window show green dots that show the servo is tracking. Turn on the labao servo and auto M7 on all scopes. | + | To lock the star, hit [MOVE] on the Main Tab of the Telescope GUI and then click the right star to bring the star to the ACQ hole. Turn on the TWFS tiptilt and DM servo on scopes that have it. Make sure the twfs tiptilt spots window show green dots that show the servo is tracking. Turn on the labao servo and DM AUTO on all scopes. All values should move to zero or near zero when the servos are on. |
| - | 5.6 Locking Tiptilt (when using lab tiptilt) | + | 5.6 Locking |
| With the star aligned with the acquisition ticks, check to make sure there are counts on the TipTilt server or the white plots in the TT windows have condensed. On the Main Tab of the Telescope GUI, click [TIP/TILT] under the Pointing Servo menu. If this button is not pressed, then the green dots on the tiptilt windows will drift and eventually drop TT lock. The [STAR ACQUIRED] button on Cosmic Debris also starts the Tiptilt servo for all active scopes with one push of a button. On the Tiptilt Servo Control GUI, turn tiptilt [ON] for each telescope or use the [TT ON] button on Cosmic Debris to perform this function for all active scopes. | With the star aligned with the acquisition ticks, check to make sure there are counts on the TipTilt server or the white plots in the TT windows have condensed. On the Main Tab of the Telescope GUI, click [TIP/TILT] under the Pointing Servo menu. If this button is not pressed, then the green dots on the tiptilt windows will drift and eventually drop TT lock. The [STAR ACQUIRED] button on Cosmic Debris also starts the Tiptilt servo for all active scopes with one push of a button. On the Tiptilt Servo Control GUI, turn tiptilt [ON] for each telescope or use the [TT ON] button on Cosmic Debris to perform this function for all active scopes. | ||
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| The Job Queue ends with slewing to the star. The stars are acquired manually. Click [Star Acquired] on the Control Tab on Cosmic Debris to update the target information listed at the top of the Cosmic Debris window. This also turns on all the telescope TT servos, the same function as the TIPTILT button on each telescope gui. Initialize the pointing of the telescopes on your first target by going to the MAIN tab on the obsgtk and clicking the red [INIT] button. Make sure you are on the correct star before initing the scopes or you will have problems. This may have to be repeated if the pointing drifts during the night. This will allow more consistent and accurate pointing for this part of the sky. You can now point to your first science target, calibrator, alignment star or fringe finder and begin the alignment sequence for the beam combiner and then start searching for fringes. | The Job Queue ends with slewing to the star. The stars are acquired manually. Click [Star Acquired] on the Control Tab on Cosmic Debris to update the target information listed at the top of the Cosmic Debris window. This also turns on all the telescope TT servos, the same function as the TIPTILT button on each telescope gui. Initialize the pointing of the telescopes on your first target by going to the MAIN tab on the obsgtk and clicking the red [INIT] button. Make sure you are on the correct star before initing the scopes or you will have problems. This may have to be repeated if the pointing drifts during the night. This will allow more consistent and accurate pointing for this part of the sky. You can now point to your first science target, calibrator, alignment star or fringe finder and begin the alignment sequence for the beam combiner and then start searching for fringes. | ||
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| + | 5.8 Monitoring MIRCX/ | ||
| + | |||
| + | When running MIRCX/ | ||
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| 6.2 Start the end night sequence on Cosmic Debris | 6.2 Start the end night sequence on Cosmic Debris | ||
| - | Clear the job queue on Cosmic Debris. Press the [END NIGHT] button on Cosmic Debris. This will close all the shutters, stow the active telescopes, close the telescope mirror covers, send the active OPLE carts to the back switch, close the OPLE socket, and archive the accumulated data for the night. NOTE: The End Night Sequence will NOT close the dome slits so these will have to be closed manually after all of the telescope M1 mirror covers are closed. It will also not send inactive carts back. Update the configuration with any inactive scopes to make sure those carts can be sent back manually as well. The Cosmic Debris status window will indicate when the end night sequence is complete. You can close Cosmic Debris after you have sent out the Observing Report. * If you use the End Night sequence to stow the telescopes and close mirror covers, remember to do a visual check of all telescopes using the check list in step 6.4 below before turning off the power for the telescopes and closing the telescope GUIs.\\ | + | Clear the job queue on Cosmic Debris. Press the [END NIGHT] button on Cosmic Debris. This will close all the shutters, stow the active telescopes, close the telescope |
| - | A list of observed targets and an Observing Report is now automatically generated as part of the End Night Sequence. Click [END NIGHT], then [REPORT] on Cosmic Debris to generate this automatic report email. The report will include the headings: PI name, Program, Observers, Baselines, Weather and Seeing data, and targets on which data was collected. Complete the Observers and Baselines entries, add comments to the bottom of the report and put your name at the end. Check with the observer for completeness of the target list. Some observers will send you comments of their own. Add those to the report. Cut and paste this into an email to CHARA Obs and send it. When the function works, you can also hit the SEND button at the bottom of the report to email this report to the CHARA OBS list.\\ | + | A list of observed targets and an Observing Report is now automatically generated as part of the End Night Sequence. Click [END NIGHT], then [REPORT] on Cosmic Debris to generate this automatic report email. The report will include the headings: PI name, Program, Observers, Baselines, Weather and Seeing data, and targets on which data was collected. Complete the Observers and Baselines entries, add comments to the bottom of the report and put your name at the end. Check with the observer for completeness of the target list. Some observers will send you comments of their own. Add those to the report. Cut and paste this into an email to CHARA Obs and send it. To archive |
| Note: Classic, CLIMB, FLUOR and PAVO will automatically send the target information to Cosmic Debris after data is acquired. For MIRCx, the [DATA ACQUIRED] button can be clicked on Cosmic Debris after each data sequence is finished or it can be done by the MIRCx operator from his or her station.\\ | Note: Classic, CLIMB, FLUOR and PAVO will automatically send the target information to Cosmic Debris after data is acquired. For MIRCx, the [DATA ACQUIRED] button can be clicked on Cosmic Debris after each data sequence is finished or it can be done by the MIRCx operator from his or her station.\\ | ||
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| 6.4 Manually stowing the telescopes | 6.4 Manually stowing the telescopes | ||
| - | Unlock the tiptilt beams using the Tiptilt servo control GUI. Turn the telescope TVs to SPY1 so that you can watch the telescopes and domes stow. On the Control Tab of the telescope GUI, click [STOW]. This will send the telescope and dome to the stow position. When the telescopes reach an elevation above 50 degrees, you can begin closing the mirror covers. M1 CLOSE, M3 CLOSE, M5 CLOSE, M7 CLOSE, Finder CLOSE Note that W2 and E1? finder covers and the W1 and W2 M7 covers need a second click to close. Visually inspect the telescopes using SPY2 to make sure that the mirror covers close properly. Check the Telescope Monitor for mirror cover status. After the M1, M3 and finder mirror covers finish closing, close the dome slits by clicking [SLIT CLOSE] on the telescope control tab for each telescope dome that is open. Close the dome enclosures by clicking [CLOSE] on the cylinder GUI. Watch that each reads .000 or .001 when closed. Check that the telescopes moved to their stow positions in EL and AZ: EL 90.0 deg, AZ 55.9 deg for E1 and E2, EL 90.0 deg, AZ 99.3 deg for W1 and W2, EL 90.0 deg, AZ 82.0 deg for S1 and S2. Turn off the power for [TEL AZ], [TEL EL] and [TIP/TILT] for the active scopes using the Power GUI and disable the scopes using the dome gui or obsgtk. Visually check all telescopes in the spycams to make sure all covers and slits are closed. Leave the telescope GUIs open until the End Night Sequence is finished. (Cosmic Debris will turn on the TVs and the Spy Cam 2 during the End Night Sequence.) If the humidity is high, make sure that the heaters are turned on. | + | Unlock the tiptilt beams using the Tiptilt servo control GUI. Turn the telescope TVs to SPY1 so that you can watch the telescopes and domes stow. On the Control Tab of the telescope GUI, click [STOW]. This will send the telescope and dome to the stow position. When the telescopes reach an elevation above 50 degrees, you can begin closing the mirror covers. M1 CLOSE, M3 CLOSE, M5 CLOSE, M7 CLOSE, Finder CLOSE Note that W2 and E1? finder covers and the W1, W2, and S2 M7 covers need a second click to close. Visually inspect the telescopes using SPY2 to make sure that the mirror covers close properly. Check the Telescope Monitor for mirror cover status. After the M1, M3 and finder mirror covers finish closing, close the dome slits by clicking [SLIT CLOSE] on the telescope control tab for each telescope dome that is open. Close the dome enclosures by clicking [CLOSE] on the cylinder GUI. Watch that each reads .000 or .001 when closed. Check that the telescopes moved to their stow positions in EL and AZ: EL 90.0 deg, AZ 55.9 deg for E1 and E2, EL 90.0 deg, AZ 99.3 deg for W1 and W2, EL 90.0 deg, AZ 82.0 deg for S1 and S2. Turn off the power for [TEL AZ], [TEL EL] and [TIP/TILT] for the active scopes using the Power GUI and disable the scopes using the dome gui or obsgtk. Visually check all telescopes in the spycams to make sure all covers and slits are closed. Leave the telescope GUIs open until the End Night Sequence is finished. (Cosmic Debris will turn on the TVs and the Spy Cam 2 during the End Night Sequence.) If the humidity is high, make sure that the heaters are turned on. |
| 6.5 Send the OPLE carts to the back of the rails | 6.5 Send the OPLE carts to the back of the rails | ||
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| 6.7 Shutting down the Lab\\ | 6.7 Shutting down the Lab\\ | ||
| \\ | \\ | ||
| - | Go to the lab and close the vacuum valves for all telescope lines (valve handle turned perpendicular to the tube). Go outside to the pump shack and close the vacuum valve. Then shut off the vacuum pump. Note any unusual noises or excessive oil temps (above 54 C) reported by the thermometer. Let Larry know of any concerns. Lock the padlock.\\ | + | Go to the lab and close the vacuum valves for all telescope lines (valve handle turned perpendicular to the tube). Go outside to the pump shack and close the vacuum valve. Then shut off the vacuum pump. Note any unusual noises or excessive oil temps (above 54 C) reported by the thermometer. Let Craig, Victor or Steve know of any concerns. Lock the padlock.\\ |
| - | Go inside the lab with booties: | + | Go inside the lab with booties: Turn off the silver box, then black box for NIRO and replace the NIRO camera cover if used. Turn off the key for the green alignment laser and turn the power switch off. Turn off Pico 3 controller above the tiptilt camera. Turn off the blue amplifiers for the metrology laser (button is labeled " |
| 6.8 Odds and ends.\\ | 6.8 Odds and ends.\\ | ||
chara/operating_procedures.txt · Last modified: 2023/09/01 02:50 by gail_stargazer
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