| Date | Description | Person(s) | Hardware Group | Action performed | Attachment | Edit | Site | Task(?) |
| 2025-09-06 |
An error occurred during the closing of the dome flap ("the while loop time-out so the dome flat might still be open"). |
Jonatan Rudrasingam |
Servers (I think) |
Activated shutdown seem to have closed the dome, although not sure if it would have closed without activating it. |
None |
Edit |
Tenerife |
|
| 2025-08-28 |
Dust level was always only just below yellow limit |
Mads |
Weather station |
I added and offset to lower the value based on visual inspection on the web camera |
None |
Edit |
Tenerife |
|
| 2025-08-04 |
Replaced the mechanisms (rollers,etc) of the PST |
Antonio P., Hector (MI), Pere |
Spectrograph |
Installed the mechanisms we bought in advance. Need to check remotely and see how it works |
None |
Edit |
Tenerife |
|
| 2025-07-29 |
Reoccurring issue with calibration light motor slide preventing observations |
Mads, Pere and Antonio |
Pre Slit Table |
The motor rails and bearings were checked and adjusted by Antonio but it continued to fail after few movements. I have decided to stay closed until Antonio and Hector will try to change the rail to a new one on Monday the 4th of August. |
None |
Edit |
Tenerife |
267 |
| 2025-07-27 |
No observations during night |
Mads |
Pre slit table - calibration mirror slide |
The same problem as a week ago with the motor slide on the pre slit table. It reports issues and cannot be moved by software. On-site manual assistance needed. |
None |
Edit |
Tenerife |
265 |
| 2025-07-25 |
The telescope will not properply shut down around ~11 am local time. While the mirror covers and dome flap are closed, the dome slit remains open. The SONG mail keeps spamming that the dome was not properply closed |
Jonatan Rudrasingam |
Dome |
Activated shutdown and added it to task |
None |
Edit |
Tenerife |
264 |
| 2025-07-18 |
Calibration bench stucked |
Antio P., Pere, Mads |
Spectrograph |
On the 19th afternoon Antonio perdormed a full cleaning of the mechanisms. Several tries. Finally Mads was able to move the bench back and forwrd and then observations resume satisfactory the whole night |
None |
Edit |
Tenerife |
|
| 2025-07-18 |
No observations during night |
Mads, Pere |
Pre slit table |
The calibration mirror slide including ThAr fibre feeder, solar fibre feed etc is not working. It needs on-site inspection of the pre-slit-table and specifically the specific motor slide. |
None |
Edit |
Tenerife |
262 |
| 2025-07-01 |
Testing of pointing |
Mads |
Telescope |
I believe I found the cause for the bad pointing on specific targets. A missing division by cosine to the declination when calculating the ra proper motion seems to have solved the issue. fingers crossed. |
None |
Edit |
Tenerife |
|
| 2025-06-17 |
Telescope and dome control system seems to not be able to read the dome azimuth motor value |
Mads, Pere |
Dome |
Tried to power cycle dome controller, reboot full telescope server system etc but nothing seems to make the dome work... Manual inspection on site needed. |
None |
Edit |
Tenerife |
259 |
| 2025-06-17 |
Testing the focus for Slit 8: New value is 112500. |
Frank |
|
Tests for diffrent camera focus values + a picture of the ThAr illum of the slit - cleary offset. |
Show |
Edit |
Tenerife |
|
| 2025-06-17 |
Tested whether we can hit the slit properly again by changing the ThAr-fiber illumination mirror position - YES we can. |
Frank |
Spectrograph |
The new encoder position for ThAr and motor 4 is 1930000 (was 1790000). Figure attached to show the new position. |
Show |
Edit |
Tenerife |
258 |
| 2025-06-13 |
The pointing model was not great |
Mads |
Telescope |
Made a new PM with 80 stars and a RMS error of 1.15 arcseconds. Took two hours from 21-23 UTC. Waited a bit after sunset for temperatures to settle |
None |
Edit |
Tenerife |
|
| 2025-06-09 |
This night, and yesterday, there seemed to be lots of problems in the early night to find objects -- perhaps a problem with the PM ? |
Frank |
|
|
None |
Edit |
Tenerife |
256 |
| 2025-06-09 |
An error occurred during the closing of the dome flap ("the while loop time-out so the dome flat might still be open"). |
Jonatan Rudrasingam |
Servers (I think) |
Activated shutdown seem to have closed the dome, although not sure if it would have closed without activating it. |
None |
Edit |
Tenerife |
|
| 2025-06-03 |
Because of clouds and the Boltwood cloud detector not working the telescope was going crazy |
Mads |
Weather station |
I closed down the site |
None |
Edit |
Tenerife |
|
| 2025-05-30 |
There are no calibrations after 20250526 - perhaps script is not running. |
Frank |
|
2000 |
None |
Edit |
Tenerife |
253 |
| 2025-05-30 |
Problem with the FITS headers of the RAW files: the slit is listed as -1 and the Camfocus as 1 .... This makes songpipe crash -- something must be wrong with the camera software. |
Frank |
Spectrograph |
this task.... |
None |
Edit |
Tenerife |
254 |
| 2025-05-15 |
There appears to be no calibrations for the nights of 20250515 and 20250516 |
Frank |
Spectrograph |
Only this log insert :-) |
None |
Edit |
Tenerife |
252 |
| 2025-05-13 |
No observations during high wind speed |
Mads |
None |
The old weather station database table was disabled a while ago and the conductor was using information on wind from that... corrected to the new table now. |
None |
Edit |
Tenerife |
|
| 2025-05-12 |
An error ocurres when the telescope is shutting down "The Error message was: [CONN-ID: 87271] "DRIVES|2:DOME[0]|2;DOME[1]|2;DOME[2]|2:ERR_DeviceError|timeout reading status|2|DOME[0];ERR_DeviceError|timeout reading status|2|DOME[1];ERR_DeviceError|timeout reading status|2|DOME[2],SYSTEM|7:CABINET|7:ERR_PhaseWatcher|Wrong 3-phase seq./undervoltage|5|CABINET;ERR_UPS|Power failure. system running on UPS battery|1|CABINET;ERR_DeviceError|timeout reading status|2|CABINET,AUXILIARY|0::,UNKNOWN|0::"" . This message is repeated and sen via email to the watchmen (Dennis Stello noticed that he received lots of email pr. minute. Neither me or Stello are watchman for tonight). Looking at the observer page the dome state is still open, this is problematic, since the humidity is high. I tried to activate the shutdown, but it didn't help. |
Jonatan Rudrasingam |
All |
Trired to activate shutdown. Didn't work. Added urgently to task. |
None |
Edit |
Tenerife |
251 |
| 2025-04-29 |
Telescope was shut down during the night using 'Total Shutdown', but in the morning at 08:14 dk time the mirror covers and dome where completely open and pointing at low altitude to the east. |
Frank Grundahl |
Telescope |
Used Astelos to close mirror covers and then the dome. |
None |
Edit |
Tenerife |
250 |
| 2025-04-28 |
Previously, I activated the shutdown for the telescope because connection to software and I couldn't acces the observer page. Now the observer page is backup and I can see that the telescope has not shutdown. Since morning is approaching someone needs to shutdown the telescope as soon as possible. |
Jonatan Rudrasingam |
All |
Tasked this as critical. |
None |
Edit |
Tenerife |
249 |
| 2025-04-28 |
Connection to software (Monitor, Telescope, Scheduler) was lost around 19:25 UTC. Cannot acces the observer page to check status. |
Jonatan Rudrasingam |
Servers? |
Activated shutdown to be safe. Added to task. |
None |
Edit |
Tenerife |
248 |
| 2025-04-14 |
Clar weather throughout the night... but no data obtained although we were tracking. probably a software issue with data storage. |
Hans Kjeldsen |
IT, software, computers |
Nothing.. |
None |
Edit |
Tenerife |
247 |
| 2025-04-14 |
No observations entire night |
Mads |
Spectrograph |
Problem is a stuck motor for the slit motion. Tried to power cycle the motor, controller and software with no effect. We will stay closed until on site assistance. |
None |
Edit |
Tenerife |
|
| 1970-01-01 |
Rotation of the Dome. |
Antonio P, Pere, Mads |
Telescope-Dome |
Antonio confirmed gear boc sliping. Installed a NEW ONE (IAC manufactured) and adjust everything.. Normal conditions atv17h15m UTC |
None |
Edit |
Tenerife |
|
