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chara:night_time_pop_changes [2022/01/10 23:16] charaobs |
chara:night_time_pop_changes [2022/02/10 14:43] 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 (< | * Check to make sure the counts are not saturating (< | ||
* You should now see the laser appear on the " | * You should now see the laser appear on the " | ||
- | * Open the POPPERIGTK | + | * 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 " | * During the process above, the laser beam will have disappeared from the " | ||
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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 " | * Check the POP Overview to make sure all the POPs are correct. Go to Configuration Tab on Cosmic Debris and click " | ||
* 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 | + | * Updated |
1. Check the small “POP Mirror Control Box” next to the troubled pop underneath the delay line rails. {{: | 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. {{: | + | 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. {{: |
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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. {{: | 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. {{: |