| Date | Description | Person(s) | Hardware Group | Action performed | Attachment | Edit | Site | Task(?) |
| 2025-11-26 |
Replaced circuit breaker for SONG UPS input line |
Miguel (MOT), Pere |
None |
A less sensitive circuit breaker installed |
None |
Edit |
Tenerife |
|
| 2025-11-25 |
Circuit breaker for the main inpout line to UPS went OFF (down). Slit open !!! |
Pere, Borja (Operator) |
Dome |
Borja (guided by Antonio and Pere at phone) took care to close it properly and breaker ON again |
None |
Edit |
Tenerife |
277 |
| 2025-10-30 |
No light from stars at all |
Mads |
Telescope |
I was not able to find any stars at all. Not even the moon. Possible to see scattered light in slit guider with light on in the dome but nothing from the sky. Closed down and more testing tomorrow to investigate. |
None |
Edit |
Tenerife |
274 |
| 2025-10-27 |
General check of the dome elements (shuter,flaps,cables, rollers, azimuthal movement etc) plus telescope cables. OK |
zntonio P, Pere |
Dome and telescope |
general check all of mdchanisms |
Show |
Edit |
Tenerife |
|
| 2025-10-25 |
Software error reported. No observations |
Pere,Mads |
telescpoe |
The telescope control software is reporting some kind of error with homing of the hexapod |
None |
Edit |
Tenerife |
|
| 2025-10-21 |
No observations after weather improved |
Mads |
Telescope |
Telescope control software was not working correctly. A restart solved it. |
None |
Edit |
Tenerife |
|
| 2025-09-18 |
No observations during night |
Mads |
Telescope |
For some reason the telescope was powered on at the time where it should be started up by the software. Since this is seen as an overwrite safety prevented observations. |
None |
Edit |
Tenerife |
|
| 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 |
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 |
| 2025-06-17 |
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 |
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 |
| 2025-06-13 |
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 |
|
| 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 |
|
