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chara:trouble_shooting [2023/02/08 19:41] charaobs [The Telescope won't stop moving or moves beyond the commanded position] |
chara:trouble_shooting [2023/03/25 01:06] cyprien |
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Some times a cart is stopped and cannot be commanded. If the cart has gone to the front hard or back hard switch, it will not be usable until it is moved from the switch and the Ople Controller box is reset. There are 6 silver boxes for these controllers with two green LED's for the front and back switches and two red LED's for the back hard and front hard switches. If a red LED is lit, there will be an error displayed on the message window and the cart is disabled. The cart will need to be moved off the switch and then the box can be reset with the RESET button on the front. The error display will go away and the red LED will be off. The cart is now controllable. | Some times a cart is stopped and cannot be commanded. If the cart has gone to the front hard or back hard switch, it will not be usable until it is moved from the switch and the Ople Controller box is reset. There are 6 silver boxes for these controllers with two green LED's for the front and back switches and two red LED's for the back hard and front hard switches. If a red LED is lit, there will be an error displayed on the message window and the cart is disabled. The cart will need to be moved off the switch and then the box can be reset with the RESET button on the front. The error display will go away and the red LED will be off. The cart is now controllable. | ||
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===== Restarting Servers ===== | ===== Restarting Servers ===== | ||
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==== Restarting Servers using the rc.local file ==== | ==== Restarting Servers using the rc.local file ==== | ||
- | \\ | + | \\ This procedure is applicable to servers that have not switched over to the bootlaunch paradigm, which may not be any at this point. \\ \\ If a server is not running or Socket Manager reports that a server is dead, then look at the socket manager list to find out what computer the server runs on ([[: |
- | This procedure is applicable to servers that have not switched over to the bootlaunch paradigm, which may not be any at this point.\\ | + | \\ |
- | \\ | + | Log on to the relevant computer by typing the computer name (ctrscrut, ople, s1, …). If the shortcut doesn' |
- | If a server is not running or Socket Manager reports that a server is dead, then look at the socket manager list to find out what computer the server runs on ([[: | + | |
- | \\ | + | |
- | Log on to the relevant computer by typing the computer name (ctrscrut, ople, s1, …). If the shortcut doesn' | + | |
- | \\ | + | |
- | Find out if the server is running by typing "ps aux | grep // | + | |
- | [ctrscrut: | + | |
- | observe 9281 0.0 0.0 61156 692 pts/3 S+ 13:58 0:00 grep pico_1\\ | + | |
- | observe 12578 0.0 0.0 24524 11212 ? S Jun16 33:14 / | + | |
- | \\ | + | |
- | If the entry for the dead server shows up in the process list, then identify the process identification number (12578 for the example above) and kill the server by typing "kill -9 // | + | |
- | \\ | + | |
- | Look up the commands to restart the server by typing "more / | + | |
- | \\ | + | |
- | #Start PICO server for PICO #1\\ | + | |
- | /bin/rm -f / | + | |
- | / | + | |
- | / | + | |
- | \\ | + | |
- | The first command removes the lock to allow the server to restart. The second command removes the name from the socket manager listing. The last command restarts the server. Note that if you are restarting the servers as observe, you will need to remove the part of the command in the rc.local file that saves information in / | + | |
- | \\ | + | |
- | There are text files on the desktop with many of the restart commands. Use these files for quick access to the relevant commands. The commands are edited and can be copied exactly as written. Files include Dome servers and all servers running on ctrscrut. Many of these commands are also located on the [[: | + | |
Shutters Server | Shutters Server | ||
- | \\ | + | \\ The Shutters server can become unresponsive or disconnected from the Socket Manager. This server must be restarted from the lab and not from the Control Room. Follow these instructions to restart it. Note that Shutters runs on ople, not ctrscrut. \\ \\ To start the shutter server on gps: \\ \\ Log into the gps computer and kill the process labeled shutters with the PID as described in **Restarting Servers** |
- | The Shutters server can become unresponsive or disconnected from the Socket Manager. This server must be restarted from the lab and not from the Control Room. Follow these instructions to restart it. Note that Shutters runs on ople, not ctrscrut.\\ | + | |
- | \\ | + | |
- | To start the shutter server on ople:\\ | + | |
- | \\ | + | |
- | Log into the ople computer and kill the process labeled shutters with the PID as described in **Restarting Servers** above.\\ | + | |
- | Turn off the power to the Shutters with the switch on the computer rack which is to the left of the computer desk and marked " | + | |
- | \\ | + | |
- | / | + | |
- | ctrscrut/ | + | |
==== Restarting Socket Manager ==== | ==== Restarting Socket Manager ==== | ||
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Have the powers been turned on to the drives? Are the scopes disabled? The usual state of the telescopes is disabled until enabled. This is due to the stall function of the scopes which eventually disables the scopes when they are stowed. Enable the scopes by hitting [ENABLE] on the dome gui, the telescope gui control tab, or the bottom of the obsgtk. If a scope disables itself during a slew, it may be just an overcautious stall function or the slew gains may be too high or low. Check the gains and if they are OK, Hit ENABLE and the scope should continue to slew. If it disables again without moving, there may be something wrong at the scope, ie. a hatch left open, a ladder not put away, a tool on the floor, or something else physically impeding the motion of the scope. You will need to go to the dome to see what it is. The computer in the dome will give you control of the scope to turn it away from the problem. | Have the powers been turned on to the drives? Are the scopes disabled? The usual state of the telescopes is disabled until enabled. This is due to the stall function of the scopes which eventually disables the scopes when they are stowed. Enable the scopes by hitting [ENABLE] on the dome gui, the telescope gui control tab, or the bottom of the obsgtk. If a scope disables itself during a slew, it may be just an overcautious stall function or the slew gains may be too high or low. Check the gains and if they are OK, Hit ENABLE and the scope should continue to slew. If it disables again without moving, there may be something wrong at the scope, ie. a hatch left open, a ladder not put away, a tool on the floor, or something else physically impeding the motion of the scope. You will need to go to the dome to see what it is. The computer in the dome will give you control of the scope to turn it away from the problem. | ||
- | Sometimes the dome guis get hung up and can cause erratic motion or no motion of the scopes. Check them for current times and continuous updates of numbers. If they are not updating, try to REOPEN them first. If that does not work, close the gui and open a new one. If a new one does not open, the dome server may be dead or Sockman lost track of it. See **Dome Server Restart** below.\\ | + | Sometimes the dome guis get hung up and can cause erratic motion or no motion of the scopes. Check them for current times and continuous updates of numbers. If they are not updating, try to REOPEN them first. If that does not work, close the gui and open a new one. If a new one does not open, the dome server may be dead or Sockman lost track of it. See **Dome Server Restart** |
\\ | \\ | ||
- | **Azimuth Limit Switches** \\ | + | 1. On the domegui MANUAL tab, click STOP so pulses won't be sent to the drive by the control software. \\ |
- | \\ | + | |
- | <font 14px/ | + | |
- | \\ | + | |
- | 1. On the domegui MANUAL tab, click STOP so pulses won't be sent to the drive by the control software.\\ | + | |
- | \\ | + | |
- | 2. Make sure you understand why the limit was hit which may require a trip to the telescope. If the azimuth positions on all telescope servers and dome guis match, it is likely the limit switch causing the stall and not that the scope is actually in a wrong position.</ | + | |
- | \\ | + | |
- | <font 14px/ | + | |
- | \\ | + | |
- | 4. Click ENABLE then you can move the telescope back to its normal range of operation.\\ | + | |
\\ | \\ | ||
+ | 2. Make sure you understand why the limit was hit which may require a trip to the telescope. If the azimuth positions on all telescope servers and dome guis match, it is likely the limit switch causing the stall and not that the scope is actually in a wrong position.</ | ||
+ | 4. Click ENABLE then you can move the telescope back to its normal range of operation. \\ \\ | ||
5. After the telescope is back in it normal range, click OVERRIDE OFF which makes the hardware aware of the limits again and then hit AUTO on the AUTO tab to resume normal operation.</ | 5. After the telescope is back in it normal range, click OVERRIDE OFF which makes the hardware aware of the limits again and then hit AUTO on the AUTO tab to resume normal operation.</ | ||
<font 14px/ | <font 14px/ | ||
- | <font 14px/ | + | <font 14px/ |
- | \\ | + | 2.</ |
- | 2.</ | + | |
- | \\ | + | |
- | <font 14px/ | + | |
<font 14px/ | <font 14px/ | ||
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<font 14px/ | <font 14px/ | ||
- | |||
==== The Telescope won't track ==== | ==== The Telescope won't track ==== | ||
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Disable the scope whenever its motion is outside of what it is supposed to do. Turn the powers off to the axes as well on the Power gui. The dome server is usually to blame and will need to be restarted. | Disable the scope whenever its motion is outside of what it is supposed to do. Turn the powers off to the axes as well on the Power gui. The dome server is usually to blame and will need to be restarted. | ||
- | Sometimes, the gains can be too low and the scope will overshoot the star position. | + | Sometimes, the gains can be too low and the scope will overshoot the star position. Disable the scope, adjust the Slewing gain up one increment and enable the scope. It should return to the star. |
==== Dome Server Restart ==== | ==== Dome Server Restart ==== | ||
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==== How to Adjust CPUMotor Gains ==== | ==== How to Adjust CPUMotor Gains ==== | ||
- | \\ | + | \\ |
- | The GAIN controls the gain of the feedback between the encoder and the drive velocity. A high gain means a " | + | The GAIN controls the gain of the feedback between the encoder and the drive velocity. A high gain means a " |
- | \\ | + | The Fn controls the maximum frequency of the servo response. A high Fn means higher frequencies are allowed through, which can mean correcting for faster problems but if too high can also lead to oscillations or fog-horning. \\ \\ |
- | The Fn controls the maximum frequency of the servo response. A high Fn means higher frequencies are allowed through, which can mean correcting for faster problems but if too high can also lead to oscillations or fog-horning.\\ | + | The software will not make changes to either of these quickly as that is a dangerous thing to do. There is NO POINT to clicking the up or down buttons more than once every few seconds. Indeed it is bad to do so as you will confuse the software. The change between slewing and tracking is also slow for similar reasons. This is why sometimes the " |
- | \\ | + | Slew and tracking mode work differently, |
- | The software will not make changes to either of these quickly as that is a dangerous thing to do. There is NO POINT to clicking the up or down buttons more than once every few seconds. Indeed it is bad to do so as you will confuse the software. The change between slewing and tracking is also slow for similar reasons. This is why sometimes the " | + | IN SLEWING MODE \\ \\ |
- | \\ | + | - If the gain is too low you will overshoot the target. \\ \\ |
- | Slew and tracking mode work differently, | + | - If the gain is too high it will fog-horn. \\ \\ |
- | \\ | + | - If the Fn is too high it will also fog-horn, even at low gains. \\ \\ |
- | IN SLEWING MODE\\ | + | You need to have the lowest possible gain and Fn in slew mode that doesn' |
- | \\ | + | IN TRACKING MODE \\ \\ |
- | - If the gain is too low you will overshoot the target.\\ | + | - If the gain is too low it will keep moving between slewing and tracking. \\ \\ |
- | \\ | + | - If the gain is too high it will fog-horn. \\ \\ |
- | - If the gain is too high it will fog-horn.\\ | + | - The same goes for Fn. \\ \\ |
- | \\ | + | In tracking mode you want the highest gain and Fn that allows the telescope to track well without fog-horning. If it " |
- | - If the Fn is too high it will also fog-horn, even at low gains.\\ | + | Some final remarks: \\ \\ |
- | \\ | + | - The gain is temperature dependent, so when the temperature changes these things will change, but more so for tracking. \\ \\ |
- | You need to have the lowest possible gain and Fn in slew mode that doesn' | + | - The tiptilt system almost never causes oscillations, |
- | \\ | + | |
- | IN TRACKING MODE\\ | + | |
- | \\ | + | |
- | - If the gain is too low it will keep moving between slewing and tracking.\\ | + | |
- | \\ | + | |
- | - If the gain is too high it will fog-horn.\\ | + | |
- | \\ | + | |
- | - The same goes for Fn.\\ | + | |
- | \\ | + | |
- | In tracking mode you want the highest gain and Fn that allows the telescope to track well without fog-horning. If it " | + | |
- | \\ | + | |
- | Some final remarks:\\ | + | |
- | \\ | + | |
- | - The gain is temperature dependent, so when the temperature changes these things will change, but more so for tracking.\\ | + | |
- | \\ | + | |
- | - The tiptilt system almost never causes oscillations, | + | |
- | \\ | + | |
- If a drive gets disabled at the end of a slew, the gain is too low. At low gain and low velocity the encoder signal changes very slowly or doesn' | - If a drive gets disabled at the end of a slew, the gain is too low. At low gain and low velocity the encoder signal changes very slowly or doesn' | ||
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==== Dome does not rotate ==== | ==== Dome does not rotate ==== | ||
- | Sometimes when observing, the dome will not follow the telescope during a slew. This can happen when the Autodome feature is not turned on. Click the ON button on the MAIN tab of the telescope gui to enable it. This may happen after a server restart so always check the dome position with the spycam during a slew after a server restart. Also make sure the target position of the dome matches the telescope' | + | Sometimes when observing, the dome will not follow the telescope during a slew. This can happen when the Autodome feature is not turned on. Click the ON button on the MAIN tab of the telescope gui to enable it. This may happen after a server restart so always check the dome position with the spycam during a slew after a server restart. Also make sure the target position of the dome matches the telescope' |
- | \\ | + | If the dome does not turn at all, even with the manual controls on the telescope or dome guis, the control may be set to manual on the control box instead of computer. This can happen if there was work done at the dome during the day. If the dome opens, but does not turn, check the controller box just inside the door of the bunker. Sometimes the drive wheel jumps in the track and cannot turn the dome, even when the motor works. This will need to be fixed during the day. A fuse can also blow out in the dome control box and leave the dome stuck. |
- | If the dome does not turn at all, even with the manual controls on the telescope or dome guis, the control may be set to manual on the control box instead of computer. This can happen if there was work done at the dome during the day. If the dome opens, but does not turn, check the controller box just inside the door of the bunker. Sometimes the drive wheel jumps in the track and cannot turn the dome, even when the motor works. This will need to be fixed during the day. A fuse can also blow out in the dome control box and leave the dome stuck. | + | |
==== Dome does not open ==== | ==== Dome does not open ==== | ||
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Is the SPYCAM on and updating? An old image may show the dome is closed, but it has actually started to open. If the dome won't open, try hitting the SLIT CLOSE button on the telescope gui first. It may be that there was a computer or server issue and the computer thinks the dome is open already and won't allow it to open again. Hit the SLIT OPEN button to see if it works now. If it still won't open, go to the bunker and look to see if the power switch is on to the dome. It will be up and red if on. | Is the SPYCAM on and updating? An old image may show the dome is closed, but it has actually started to open. If the dome won't open, try hitting the SLIT CLOSE button on the telescope gui first. It may be that there was a computer or server issue and the computer thinks the dome is open already and won't allow it to open again. Hit the SLIT OPEN button to see if it works now. If it still won't open, go to the bunker and look to see if the power switch is on to the dome. It will be up and red if on. | ||
- | Also look to see if the power cable is connected to the computer box. If it's connected up high to the manual dome controls, the cable needs to be brought back to the computer box connector. __Turn the power off first,__ using the light switch with the red LED toggle, to the dome before disconnecting the power cable. Slide it onto the connector at the box and turn the collar to lock it in place. Turn the power back on and see if you can open the dome from the computer in the bunker. | + | Also look to see if the power cable is connected to the computer box. If it's connected up high to the manual dome controls, the cable needs to be brought back to the computer box connector. __Turn the power off first, |
==== Dome does not close ==== | ==== Dome does not close ==== | ||
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==== " | ==== " | ||
- | Cosmic Debris reports " | + | Cosmic Debris reports " |
+ | The beam sample server runs on ctrscrut. The ople server tries to open a connection to the beam sampler when it starts. If the beam sampler is not there, or dies, \\ | ||
+ | you need to restart the ople server as there is no command to reopen that connection. | ||
===== Remote Observing ===== | ===== Remote Observing ===== | ||
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Here is an example of how to find the CHARA number of a star, nova, or AGN that is already in the CHARA database: | Here is an example of how to find the CHARA number of a star, nova, or AGN that is already in the CHARA database: | ||
- | [ctrscrut: | + | [ctrscrut: |
+ | Object "NGC 4151" found as CHARA number: 320263 | ||
Note: If the target information stored in the CHARA database does not match SIMBAD, then dbadd will provide the coordinates and magnitudes listed in SIMBAD, and it will also list the CHARA numbers of objects in the database located within 10 arcsec. Please check these nearby entries before adding a new star to the database. | Note: If the target information stored in the CHARA database does not match SIMBAD, then dbadd will provide the coordinates and magnitudes listed in SIMBAD, and it will also list the CHARA numbers of objects in the database located within 10 arcsec. Please check these nearby entries before adding a new star to the database. | ||
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SIMBAD found this for "BD 41 3807": | SIMBAD found this for "BD 41 3807": | ||
- | ID 2MASS_J20340850 4136592 \\ CHARA 320414 \\ 2000.0 \\ CAT8 2MASS_J20340850 4136592 \\ RA 20 34 08.5148 \\ DEC 41 36 59.408 \\ PMRA -2.32 \\ PMDEC -3.87 \\ PAR 0.58 \\ RVEL -27.50 | + | ID 2MASS_J20340850 4136592 \\ |
+ | CHARA 320414 \\ | ||
+ | 2000.0 \\ | ||
+ | CAT8 2MASS_J20340850 4136592 \\ | ||
+ | RA 20 34 08.5148 \\ | ||
+ | DEC 41 36 59.408 \\ | ||
+ | PMRA -2.32 \\ | ||
+ | PMDEC -3.87 \\ | ||
+ | PAR 0.58 \\ | ||
+ | RVEL -27.50 | ||
- | VMAG 10.03 \\ HMAG 6.23 \\ KMAG 5.99 \\ SP O5.5Ifc \\ END | + | VMAG 10.03 \\ |
+ | HMAG 6.23 \\ | ||
+ | KMAG 5.99 \\ | ||
+ | SP O5.5Ifc \\ | ||
+ | END | ||
- | Is the above the object you are looking for? [y/n] y \\ Added "BD 41 3807" to the database. | + | Is the above the object you are looking for? [y/n] y \\ |
+ | Added "BD 41 3807" to the database. | ||
In the example above, the object "BD 41 3807" has been added to the database as CHARA number 320414. | In the example above, the object "BD 41 3807" has been added to the database as CHARA number 320414. | ||
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The command dbadd -m is used by entering the star name and coordinates in this format: | The command dbadd -m is used by entering the star name and coordinates in this format: | ||
- | Usage: dbadd -m < | + | Usage: dbadd -m < |
+ | < | ||
+ | <RA> : XXhXXmXX.X or XXhXX.X (no spaces) \\ \\ | ||
+ | <Dec> : XXdXXmXX.X or XXdXX.X (no spaces) \\ \\ | ||
+ | There are cases where an object is not in SIMBAD and doesn' | ||
**Binary stars** | **Binary stars** | ||
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==== Adding an anchor to the wiki page ==== | ==== Adding an anchor to the wiki page ==== | ||
- | To add an anchor to the wikipage, type the following where you want the anchor inserted (without the spaces between the symbols): \\ [ [ #AnchorName ] ] | + | To add an anchor to the wikipage, type the following where you want the anchor inserted (without the spaces between the symbols): \\ |
+ | [ [ #AnchorName ] ] | ||
Highlight the text you want to be a link to the anchor, click the link symbol above and select anchor. Select a page(such as Trouble Shooting) where the anchor is located and give the same name for the anchor. | Highlight the text you want to be a link to the anchor, click the link symbol above and select anchor. Select a page(such as Trouble Shooting) where the anchor is located and give the same name for the anchor. | ||
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Follow instructions in the [[: | Follow instructions in the [[: | ||
- | \\ Last updated 2023-02-09 by Norm Vargas | + | \\ |
+ | Last updated 2023-02-09 by Norm Vargas | ||
==== Dome Server Restart ==== | ==== Dome Server Restart ==== |