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chara:pavo_user_manual [2022/07/06 21:42] jones [6 Starting PAVO Software] |
chara:pavo_user_manual [2023/12/03 22:47] (current) bflores [2 Cooling Down the PAVO Camera] |
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===== 2 Cooling Down the PAVO Camera ===== | ===== 2 Cooling Down the PAVO Camera ===== | ||
- | The PAVO camera needs to be cooled down at the beginning of the run. Type the following command into the pavo server: > coolon -60\\ | + | The PAVO camera needs to be cooled down at the beginning of the run. Type the following command into the pavo server: > coolon -50\\ |
- | This cools the camera to -60 C. You can read the current temperature from the pavo server. As of 2014, we are doing air cooling (PAVO is no longer hooked up to water cooling). Because of this, the minimum gain setting should be 170 for almost all targets (not 150). If you leave the pavo computer on and the camera plugged-in, then you don’t have to do anything until a PAVO run is over. At the end of the run, type " | + | This cools the camera to -50 C. You can read the current temperature from the pavo server. As of 2014, we are doing air cooling (PAVO is no longer hooked up to water cooling). Because of this, the minimum gain setting should be 170 for almost all targets (not 150). If you leave the pavo computer on and the camera plugged-in, then you don’t have to do anything until a PAVO run is over. At the end of the run, type " |
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\\ Previous Notes: When PAVO was hooked up to the water cooling, the camera was cooled down to -70 C. [CCD Cool] had to be turned on through the power gui for this to work. The fan is also on, so nothing should break if CCD cool isn’t on; it will just stop at about -55C and not go any lower. The gain numbers in the current mode only apply to this temperature. | \\ Previous Notes: When PAVO was hooked up to the water cooling, the camera was cooled down to -70 C. [CCD Cool] had to be turned on through the power gui for this to work. The fan is also on, so nothing should break if CCD cool isn’t on; it will just stop at about -55C and not go any lower. The gain numbers in the current mode only apply to this temperature. | ||
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Next: [[# | Next: [[# | ||
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===== 3 Overview of Alignment Steps ===== | ===== 3 Overview of Alignment Steps ===== | ||
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- Daily alignment of visbeams, dichroics, and M10. The green laser is now bright enough for these steps to be done using the standard CHARA procedures. LDCs should be in place and homed for all telescopes being used by PAVO. It is recommended that the IR beams be aligned to CLIMB on Beams 1-3, in case CLIMB is needed to help search for fringes. | - Daily alignment of visbeams, dichroics, and M10. The green laser is now bright enough for these steps to be done using the standard CHARA procedures. LDCs should be in place and homed for all telescopes being used by PAVO. It is recommended that the IR beams be aligned to CLIMB on Beams 1-3, in case CLIMB is needed to help search for fringes. | ||
- On-sky alignment of image and pupil planes. This should be done when switching to a new target/ | - On-sky alignment of image and pupil planes. This should be done when switching to a new target/ | ||
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- | | + | Note: The alignment on Beams 1, 2, and 3 are done using VisBeams 1&2 and VisBeams 2&3. All beam pairs should be aligned to the targets on the east-end table (1&2-1, 1&2-2, 2&3-2, 2&3-3). |
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* Open the PAVO server and PAVO gui. Check the current temperature from the pavo server. If it is not cooled, then type “coolon -60” into the pavo server to cool the camera. | * Open the PAVO server and PAVO gui. Check the current temperature from the pavo server. If it is not cooled, then type “coolon -60” into the pavo server to cool the camera. | ||
* Home the PAVO motors by typing " | * Home the PAVO motors by typing " | ||
- | * After homing the PAVO motors, check the PAVO Zaber Engineering GUI to make sure the last two stages (B1 Split and B2 Split) go back to their last positions. | + | * After homing the PAVO motors, check the PAVO Zaber Engineering GUI to make sure the last two stages (B1 Split and B2 Split) go back to their last positions. The last stage has been getting stuck at 0 and needs to be set manually. The current position of B1 Split is 62421 and B2 Split is 105025 (as of 2020Aug18). |
* Put the PAVO beam splitters into the beam path. The mounts are at the edge of the Classic table. | * Put the PAVO beam splitters into the beam path. The mounts are at the edge of the Classic table. | ||
* Align Visbeams using pico 3 (B1& | * Align Visbeams using pico 3 (B1& | ||
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* DTIME - damping time | * DTIME - damping time | ||
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+ | Below this panel, provides information on fringe tracking and cart positions: | ||
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* Left-side panel - Baseline Information | * Left-side panel - Baseline Information | ||
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=== Figure 5.2 === | === Figure 5.2 === | ||
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=== Figure 5.3 === | === Figure 5.3 === | ||
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=== Figure 5.4 === | === Figure 5.4 === | ||
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=== Figure 5.5 === | === Figure 5.5 === | ||
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=== Figure 5.6 === | === Figure 5.6 === | ||
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==== 5.3 PAVO Engineering GUI ==== | ==== 5.3 PAVO Engineering GUI ==== | ||
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=== Figure 5.7 === | === Figure 5.7 === | ||
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==== 12.3 Can’t See Starlight on Dectector ==== | ==== 12.3 Can’t See Starlight on Dectector ==== | ||
- | Check the PAVO server to make sure the gain is set properly. If it is 0, then re-enter the gain setting using the PAVO gui. If light is still not reaching the detector, then go into the lab, put in the corner cubes, and make sure the laser light is reaching the PAVO table. | + | Check the PAVO server to make sure the gain is set properly. If it is 0, then re-enter the gain setting using the PAVO gui. |
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+ | The red beacon from the AO board can be seen on the PAVO camera. | ||
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+ | Check if the labao shows starlight when the blue beacon is turned low or off on a bright star, Vmag 3 or brighter. | ||
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+ | If light is still not reaching the detector, then go into the lab, put in the corner cubes, and make sure the laser light is reaching the PAVO table. Look for laser light on the splitters, M1 mirrors above the CLIMB table and L1 lenses facing the PAVO table. | ||
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