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chara:night_time_pop_changes

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chara:night_time_pop_changes [2022/01/11 04:16]
charaobs
chara:night_time_pop_changes [2022/02/10 19:43] (current)
charaobs
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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. 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.
  
-  * Unlock Tiptilt on all beams on the obsgtk or Tiptilt Servo GUI.+  * Unlock Tiptilt on all beams on the obsgtk or Tiptilt Servo GUI and turn off all auto alignments with the STOP ALIGN button on CD or STOP A button on the obsgtk.
   * 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 2 meters. Do not do a PoP change with a cart on the front switch.   * Make sure that the cart involved is further back than 2 meters. Do not do a PoP change with a cart on the front switch.
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   * Check to make sure the counts are not saturating (<64,000) on the lab TT gui if using it. Turn off the camera if it is too bright.   * Check to make sure the counts are not saturating (<64,000) on the lab TT gui if using it. Turn off the camera if it is too bright.
   * You should now see the laser appear on the "M10AL" TV screen for the telescopes. There is a small spot near the center of the M5 cover that is used as a reference for aligning the laser beam. If the laser beam doesn't have a well-defined bright or dark spot in the center, you can adjust the focus by opening the "IRIS" gui and clicking [DEC] or [INC] to change the IRIS setting. If you need to, you can click [BEAM] on the IRIS gui; this will close the IRIS and then re-open it to a pre-defined "Beam" position.   * You should now see the laser appear on the "M10AL" TV screen for the telescopes. There is a small spot near the center of the M5 cover that is used as a reference for aligning the laser beam. If the laser beam doesn't have a well-defined bright or dark spot in the center, you can adjust the focus by opening the "IRIS" gui and clicking [DEC] or [INC] to change the IRIS setting. If you need to, you can click [BEAM] on the IRIS gui; this will close the IRIS and then re-open it to a pre-defined "Beam" position.
-  * Open the POPPERIGTK from the icon on the upper left screen. Turn on the power to the telescope you want to change the PoP on.+  * On the POPPERIGTK, turn on the power to the telescope you want to change the PoP on.
   * Click the PoP you want and both the PoP mirror and periscope will move to make the change.   * Click the PoP you want and both the PoP mirror and periscope will move to make the change.
   * During the process above, the laser beam will have disappeared from the "M10AL" screen. Once the PoP change is complete, a pop up window with the PICO 2 adjustment for the M10 mirror will appear. A message will also state the PoP change is complete.   * During the process above, the laser beam will have disappeared from the "M10AL" screen. Once the PoP change is complete, a pop up window with the PICO 2 adjustment for the M10 mirror will appear. A message will also state the PoP change is complete.
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   * Check the POP Overview to make sure all the POPs are correct. Go to Configuration Tab on Cosmic Debris and click "GET" to get the new configuration. Make sure the POPs update correctly. If the POPs and the ref cart are correct, then click "SEND" to send the new configuration to OPLE and the other servers. You can also check to make sure the configuration is correct on the OPLE GUI Configuration Tab.   * Check the POP Overview to make sure all the POPs are correct. Go to Configuration Tab on Cosmic Debris and click "GET" to get the new configuration. Make sure the POPs update correctly. If the POPs and the ref cart are correct, then click "SEND" to send the new configuration to OPLE and the other servers. You can also check to make sure the configuration is correct on the OPLE GUI Configuration Tab.
   * Note that carts may go to extreme positions until you slew since they are likely not correct for the current star. Turn carts off if they are headed for positions beyond 0m or 44m.   * Note that carts may go to extreme positions until you slew since they are likely not correct for the current star. Turn carts off if they are headed for positions beyond 0m or 44m.
-  * Updated 1-10-21 by Norm \\  \\ __**Troubleshooting**__  \\  \\ **1. A pop mirror does not move IN or OUT** \\  \\ When a pop mirror does not move IN or OUT when clicking on the gui, the most likely cause is a timeout which can be reset. Otherwise, the fix is to change a blown fuse at the pop mirror. Below is the procedure on how to fix a timeout and change a blown fuse. \\  \\ Tools needed: \\ Philips screwdriver, A small Allen key, Meter to measure resistance, Tweezers, Replacement fuse (see below at step 1. 4.+  * Updated 2-10-22 by Norm \\  \\ __**Troubleshooting**__  \\  \\ **1. A pop mirror does not move IN or OUT** \\  \\ When a pop mirror does not move IN or OUT when clicking on the gui, the most likely cause is a timeout which can be reset. Otherwise, the fix is to change a blown fuse at the pop mirror. Below is the procedure on how to fix a timeout and change a blown fuse. \\  \\ Tools needed: \\ Philips screwdriver, A small Allen key, Meter to measure resistance, Tweezers, Replacement fuse (see below at step 1. 4.
  
 1. Check the small “POP Mirror Control Box” next to the troubled pop underneath the delay line rails. {{:chara:files:pop-trouble_1.png|POP-trouble 1.png}}(Fig. POP-trouble 1) 1. Check the small “POP Mirror Control Box” next to the troubled pop underneath the delay line rails. {{:chara:files:pop-trouble_1.png|POP-trouble 1.png}}(Fig. POP-trouble 1)
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-       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:files:pop-trouble_2.png|POP-trouble 2.png}}(Fig. POP-trouble 2) Try to use the RESET button: push it with a small enough Allen key. Slide the command switches according to the chart on the box to command the mirror to the other position. Wait about a minute. If the other green led will come on indicating that the mirror moved, then you are done. It was a simple timeout. Otherwise take the next step. +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:files:pop-trouble_2.png|POP-trouble 2.png}}(Fig. POP-trouble 2) Try to use the RESET button: push it with a small enough Allen key. Slide the command switches according to the chart on the box to command the mirror to the other position. Wait about a minute. If the other green led will come on indicating that the mirror moved, then you are done. It was a simple timeout. Otherwise take the next step.
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 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 the fuse if the meter does not beep. It could be that both of them were blown. {{:chara:files:pop-trouble_3-4.png|POP-trouble 3-4.png}} 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 the fuse if the meter does not beep. It could be that both of them were blown. {{:chara:files:pop-trouble_3-4.png|POP-trouble 3-4.png}}
chara/night_time_pop_changes.txt · Last modified: 2022/02/10 19:43 by charaobs