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chara:night_time_pop_changes [2018/07/05 09:38] jones |
chara:night_time_pop_changes [2022/02/10 14:43] charaobs |
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- | ======Night-time POP Changes====== | + | ====== Night-time POP Changes ====== |
- | __**Instructions for Changing PoPs During the Night**__\\ | + | |
- | | + | __**Instructions for Changing PoPs During the Night**__ |
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+ | This page has been updated JAN 2020 to reflect the use of the new obsgtks and POPPERIGTK for pop changes. | ||
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+ | (The old version can be found by logging into the wiki and selecting the old revisions icon on the right.) | ||
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+ | It is proper protocol for the PI's, remote or visiting scientists to announce any PoP changes 10 minutes before needed so the operator can bring up the required windows. Please give the PoP's for only the telescopes that need changing. Use this format: E1 → 1, E2 → 2, W1 → 5, etc. Give the desired PoP only. | ||
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* If the telescopes are still pointing at a star, make sure to periodically check the AZ/EL status on the telescope servers during the POP change procedure. If the telescopes ever get too low or start drifting, click [STOW] to safely stow the telescopes until after the POP change finishes. | * If the telescopes are still pointing at a star, make sure to periodically check the AZ/EL status on the telescope servers during the POP change procedure. If the telescopes ever get too low or start drifting, click [STOW] to safely stow the telescopes until after the POP change finishes. | ||
- | * Make sure that the cart involved is further back than the home sensor. | + | * Make sure that the cart involved is further back than 2 meters. Do not do a PoP change |
- | * Close the M5 cover on each telescope that needs a POP change | + | * Turn on the camera with the ON button at the top of the obsgtk |
- | * Make sure the telescope TVs are on and click [M10AL] | + | * On the CONTROL tab, select |
- | * Under ESP Controllers menu, open " | + | * Close the M5 cover on each telescope that needs a POP change |
- | * Under Pico Controllers menu, open "Pico #2" | + | * Open the POPPERI gtk from a terminal, (usually kept open), with popperigtk |
- | * Open the POPs GUI. Click [Overview] to bring up the overview to see the status of which POPs are in. | + | |
- | * When reading | + | |
- | * " | + | |
- | * If the POP overview reports nonsense, then click " | + | |
* Send VisBeams to the correct pair of telescopes that you need to adjust. | * Send VisBeams to the correct pair of telescopes that you need to adjust. | ||
* Open the " | * Open the " | ||
* Turn the Laser Filter to "ND 0.0". | * Turn the Laser Filter to "ND 0.0". | ||
- | * Check to make sure the counts are not saturating | + | * Check to make sure the counts are not saturating (<64,000) on the lab TT gui if using it. Turn off the camera |
- | * You should now see the laser appear on the " | + | * You should now see the laser appear on the " |
- | * If the laser beam is far away from the center spot, you can adjust before changing the POP. For example, if you are working | + | * On the POPPERIGTK, turn on the power to the telescope you want to change the PoP on. |
- | * Now that the laser is aligned, it is time to change the POPs. | + | * Click the PoP you want and both the PoP mirror and periscope |
- | * Look at the POP Overview to check which POP is currently in (the uppermost POP listed as " | + | * During the process above, the laser beam will have disappeared from the " |
- | * On the POP GUI, select the telescope and PoP mirror that needs to go in. For instance, if you need to put in E1-POP2, then select " | + | * After each telescope is complete |
- | * If there are any POPs in that are in front of the selected POP mirror, then those mirrors | + | * You will need to finish the alignment by adjusting the M10 mirror. |
- | * Note that POP5 = END is ALWAYS IN and listed as " | + | * Make sure the POPPERIGTK powers are off to each scope when finished as the spot can move slightly when it is turned off. |
- | * During the process above, the laser beam will have disappeared from the " | + | * Click UP/ |
- | * Find the PoP Change Cheat Sheet that is kept between the speaker and VEGA computer on the left side of the monitors. Find the correct telescope chart and the PoP change combination that you are making, eg. E1 PoP 1->2. Take the value in the " | + | |
- | * Find the "POP Change Short Procedure" | + | |
- | * To move the periscope, click the red button for the telescope | + | |
- | * When finished, turn the periscope power off by clicking the green power button for the telescope on the PERI1 or PERI2 GUI. The power button for that periscope will turn back to red. | + | |
- | * You will need to finish the alignment by adjusting the M10 mirror. | + | |
* Close the shutter for that telescope beam using the SHUTTERS GUI. | * Close the shutter for that telescope beam using the SHUTTERS GUI. | ||
- | * Open the M5 cover for the telescope. Click ACQ or FIND on the telescope GUI to send the TV back to the window you desire. | + | * Open the M5 cover. Turn off the camera with the OFF button at the top of obsgtk. Click ACQ to get back to the stars. |
* Repeat the above procedure for each telescope that needs a POP change. | * Repeat the above procedure for each telescope that needs a POP change. | ||
- | * After you finish, make sure you change the laser filter back to "ND 3.0". Close the " | + | * After you finish, make sure you change the laser filter back to "ND 3.0". Close the " |
* Check the POP Overview to make sure all the POPs are correct. Go to Configuration Tab on Cosmic Debris and click " | * Check the POP Overview to make sure all the POPs are correct. Go to Configuration Tab on Cosmic Debris and click " | ||
- | * If you are staying on the same star, go the OPLE GUI and click the [STOP] button at the bottom of the Control Tab. Then click [START] at the bottom of the same tab to restart astrolib in order to send carts to the correct | + | * Note that carts may go to extreme positions until you slew since they are likely not correct for the current |
- | * Make sure the periscope powers are off (red). Close the PER1, PERI2, PICO2, and PoPs GUIs. | + | * Updated |
- | * Update the new POPs on the white board. | + | |
- | \\ | + | 1. Check the small “POP Mirror Control Box” next to the troubled pop underneath the delay line rails. {{: |
+ | |||
+ | 2. Slide the CONTROL switch on the box to “Local”. The red “Timeout” led will most likely turn ON and may be one of the green ones (Fwd or Rev limit) indicating the current position of the pop. {{: | ||
- | - 1. Check the small “POP Mirror Control Box” next to the troubled pop underneath | + | 3. Disconnect all the cables; take the box off the velcro and to a convenient place. Unscrew the four Philips screws at the corners and slowly take off the lid. Do not disconnect the wires inside the box. On the backside of the lid you will see two fuses. Set the meter to continuity mode, which makes a beep when there is continuity, and check the contact between the two ends of each fuse. ( Fig. POP-trouble 3-4 ) \\ A beeping fuse is good. You have to replace |
- | \\ | + | |
- | - 2. Slide the CONTROL switch on the box to “Local”. The red “Timeout” led will most likely turn ON and may be one of the green ones (Fwd or Rev limit) indicating the current position of the pop. {{chara: | + | 4. This is the type of fuse that you have to use. Look for the cardboard |
- | \\ \\ | + | |
- | - 3. Disconnect all the cables; | + | 5. Use tweezers to take out the blown fuse from its holder, |
- | \\ | + | |
- | - 4. This is the type of fuse that you have to use. Look for the cardboard | + | 6. Test the box in “Local” mode. Slide the command switches to FWD: 0 1 0 or REV: 0 1 1 to get the mirror moving and hit the Enter button. Wait until the green limit switch led lights up. When the mirror goes against the hard stops, a clinking sound can be heard from the pop box. |
- | \\ \\ | + | |
- | - 5. Use tweezers to take out the blown fuse from its holder, and insert a new one. Put the lid back; be mindful of the right orientation with respect to the connectors. (Look at the first picture.) Secure the lid with the screws, and attach the all the connectors. | + | 7. If the mirror still does not move as expected further investigation is needed, and probably |
- | \\ | + | |
- | - 6. Test the box in “Local” mode. Slide the command switches to FWD: 0 1 0 or REV: 0 1 1 to get the mirror moving and hit the Enter button. Wait until the green limit switch led lights up. When the mirror goes against the hard stops, a clinking sound can be heard from the pop box. | + | 8. Slide the CONTROL switch to “Remote”. Make sure you did not leave anything on the rail. |
- | \\ | + | |
- | - 7. If the mirror still does not move as expected further investigation is needed, and probably the pop box has to be opened after letting air into the pipe. If the mirror moved as expected go to the next step. | ||
- | \\ | ||
- | - 8. Slide the CONTROL switch to “Remote”. Make sure you did not leave anything on the rail. |