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Night Reports 2025
In the tables below, Observing, Weather and Technical refer to time spent observing, time lost to bad weather, and time lost because of technical problems. Note that Observing includes time spent on calibration observations and, occasionally, scheduled on-sky test observations; Technical does not include scheduled downtime (e.g. for planned engineering work).
The Night Duty Officer estimates whether the night was photometric or non-photometric (spectroscopic) based on satellite imagery and SkyCam data obtained through the night. This is a qualitative assessment only and may not always be entirely accurate. IT IS POSSIBLE THAT, ON OCCASION, OBSERVATIONS REQUIRING PHOTOMETRIC CONDITIONS ARE ACQUIRED IN NON-PHOTOMETRIC CONDITIONS. Users should check the quality of their data carefully. Good, average and poor seeing refers to inferred zenith seeing of < 1.0 arcsec, 1.0-2.0 arcsec, and > 2.0 arcsec, respectively. Calima refers to a warm wind that occasionally blows over from the Sahara and brings a lot of fine dust forcing a shutdown to protect the optics.
SKYCAM MOVIES AND ATMOSPHERIC TRANSMISSION
Below we also provide links to Movies constructed from a sequence of optical images obtained with either SkyCam-A (covering the whole sky), SkyCam-T (now showing a 9 degree field centred on each target; was 21 deg pre-21 Oct) or SkyCam-Z (1 degree field). Images are obtained every minute or so throughout the entire night. These movies can usually be used to establish, qualitatively at least, how clear or cloudy a given night was. On bright nights (i.e. when the moon is up), the smaller-field camera's T and Z are often more useful than the full-sky camera A. Additional movies and still images are available from the Skycam Archive. Plots of SkyCamZ Zero Point data are also provided. Zero points here are defined with respect to APASS 10 < r < 13 with no colour term. These indicate to first order periods of thin or thick cloud. A clear night usually results in a flat distribution of ZP values, while thick cloud causes a dip in the ZP level. 'A', 'T' and 'Z' in the SkyCam columns refer to the camera from which the data were acquired.
July 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 4 Jul | 0.0 | 0.0 | 7.0 | DeviceNet Master Errors. | - - | - - - |
| 3 Jul | 0.0 | 0.0 | 7.0 | Enclosure fault. | - - | - - - |
| 2 Jul | 0.0 | 0.0 | 7.0 | Enclosure fault. | - - | - - - |
| 1 Jul | 0.0 | 0.0 | 6.9 | Enclosure fault. | - - | - - - |
June 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault. | - - | - - - |
| 29 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault. | - - | - - - |
| 28 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault. | - - | - - - |
| 27 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault. | - - | - - - |
| 26 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 25 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 24 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 23 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 22 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 21 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 20 Jun | 0.0 | 0.0 | 6.8 | Enclosure fault | - - | - - - |
| 19 Jun | 0.0 | 0.0 | 6.8 | Enclosure fault | - - | - - - |
| 18 Jun | 0.0 | 0.0 | 6.8 | Enclosure fault | - - | - - - |
| 17 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 16 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 15 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 14 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault | - - | - - - |
| 13 Jun | 0.0 | 0.0 | 6.9 | Enclosure fault. | - - | - - - |
| 12 Jun | 0.0 | 6.9 | 0.0 | Thick cloud. | - - | - - - |
| 11 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. Devicnet errors on startup. | T Z | A T Z |
| 10 Jun | 5.4 | 0.0 | 1.5 | Photometric with good seeing. Devicenet error and cas node reboot. | T Z | A T Z |
| 9 Jun | 6.6 | 0.0 | 0.3 | Non-photometric with good seeing. | T Z | A T Z |
| 8 Jun | 6.4 | 0.0 | 0.5 | Non-photometric, good/average seeing, second half of night cassegrain axis faults. | T Z | A T Z |
| 7 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T Z | A T Z |
| 6 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T Z | A T Z |
| 5 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, good seeing. | T Z | A T Z |
| 4 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T Z | A T Z |
| 3 Jun | 0.0 | 7.0 | 0.0 | Thick cloud. | - - | - - - |
| 2 Jun | 0.0 | 7.0 | 0.0 | Thick cloud and high humidity. | - - | - - - |
| 1 Jun | 6.8 | 0.0 | 0.2 | Set photometric but there was actually some high cloud with variable seeing. Cas torque errors / node reboot. | T Z | A T Z |
May 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 May | 7.1 | 0.0 | 0.0 | Photometric with average/poor seeing. | T Z | A T Z |
| 30 May | 7.1 | 0.0 | 0.0 | Photometric with good/average seeing. LIRIC nudgematic failure. | T Z | A T Z |
| 29 May | 7.1 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T Z | A T Z |
| 28 May | 7.1 | 0.0 | 0.0 | Photometric with good/average seeing. | T Z | A T Z |
| 27 May | 7.1 | 0.0 | 0.0 | Non-photometric with good/average seeing. NAS failure causing most instruments to be offline. | T Z | A T Z |
| 26 May | 7.2 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T Z | A T Z |
| 25 May | 6.3 | 0.0 | 0.9 | Photometric. Good seeing. Cas node reboots. | T Z | A T Z |
| 24 May | 7.0 | 0.0 | 0.3 | Photometric. Good seeing at start, turning average later. Cas node reboot. | T Z | A T Z |
| 23 May | 7.0 | 0.0 | 0.3 | Photometric. Average seeing. Cas node reboot. | T Z | A T Z |
| 22 May | 7.0 | 0.0 | 0.3 | Non-photometric. Good seeing. Cas node reboot. | T Z | A T Z |
| 21 May | 7.3 | 0.0 | 0.0 | Mostly photometric. Cloud near dawn. Good seeing. | T Z | A T Z |
| 20 May | 7.3 | 0.0 | 0.0 | Photometric. Average seeing. | T Z | A T Z |
| 19 May | 7.0 | 0.0 | 0.3 | Non-photometric. Good seeing. Cas node reboot. | T Z | A T Z |
| 18 May | 7.4 | 0.0 | 0.0 | Photometric with average/good seeing. | T Z | A T Z |
| 17 May | 0.0 | 7.4 | 0.0 | High humidity | T Z | A T Z |
| 16 May | 7.1 | 0.0 | 0.3 | Non-photometric with average seing. Cas node reboot. | T Z | A T Z |
| 15 May | 7.4 | 0.0 | 0.0 | Photometric with average seeing. | T Z | A T Z |
| 14 May | 7.0 | 0.0 | 0.5 | Non-photometric with average seeing. Cas node reboots. | T Z | A T Z |
| 13 May | 1.9 | 5.6 | 0.0 | Average seeing and photometric at start of night, then closed for high humidity. | T Z | A T Z |
| 12 May | 0.0 | 7.5 | 0.0 | High humidity | T Z | A T Z |
| 11 May | 2.5 | 4.3 | 0.7 | Non-photometric, average/poor seeing. High humidity in middle part of night, cassegrain axis faults. | T Z | A T Z |
| 10 May | 0.0 | 7.6 | 0.0 | High humidity and rain. | - - | - - - |
| 9 May | 0.0 | 7.6 | 0.0 | High humidity and rain. | - - | - - - |
| 8 May | 3.9 | 3.2 | 0.5 | Non-photometric, good/average seeing, thick cloud in second half of night. Node reboot in cassegrain axis. | T Z | A T Z |
| 7 May | 7.7 | 0.0 | 0.0 | Non-photometric, average seeing. | T Z | A T Z |
| 6 May | 4.4 | 3.3 | 0.0 | Photometric, good/average seeing. High humidity in second half of night. | T Z | A T Z |
| 5 May | 0.0 | 7.8 | 0.0 | Thick high cloud. | - - | - - - |
| 4 May | 7.8 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T Z | A T Z |
| 3 May | 7.9 | 0.0 | 0.0 | Photometric with good/average seeing. | T Z | A T Z |
| 2 May | 7.7 | 0.0 | 0.2 | Photometric with good/average seeing. Cas torque errors/node reboot. | T Z | A T Z |
| 1 May | 7.5 | 0.4 | 0.0 | Photometric with average seeing. High humidity/wetness. | T Z | A T Z |
April 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Apr | 0.0 | 7.9 | 0.0 | High humidity and low temperatures. | - - | - - - |
| 29 Apr | 0.7 | 7.3 | 0.0 | Photometric with poor seeing. High humidity and cold temperatures. | T Z | A T Z |
| 28 Apr | 6.2 | 1.8 | 0.0 | Photometric with average/good seeing. High humidity. | T Z | A T Z |
| 27 Apr | 8 | 0.0 | 0.0 | Photometric with average/good seeing. Cas node reboots in twilight. | T Z | A T Z |
| 26 Apr | 4 | 0.0 | 4.0 | Photometric with average seeing. First half of night used to recollimate optics following on-site work on mirror support. | T Z | A T Z |
| 25 Apr | 7.9 | 0.0 | 0.2 | Photometric with average seeing. Cas node reboot. | T Z | A T Z |
| 24 Apr | 8.1 | 0.0 | 0.0 | Photometric with good seeing. Cas node reboot in twilight. | T Z | A T Z |
| 23 Apr | 8.1 | 0.0 | 0.0 | Photometric with good seeing. | T Z | A T Z |
| 22 Apr | 8.1 | 0.0 | 0.0 | Photometric with average seeing. | T Z | A T Z |
| 21 Apr | 7.1 | 0.0 | 1.0 | Non-photometric, average seeing. 3x CAS torque reboots. LIRIC in fault. | T Z | A T Z |
| 20 Apr | 7.9 | 0.0 | 0.3 | Non-photometric, average seeing. CAS torque reboot | T Z | A T Z |
| 19 Apr | 7.9 | 0.0 | 0.3 | Non-photometric, average seeing. CAS torque reboot. | T Z | A T Z |
| 18 Apr | 7.9 | 0.0 | 0.3 | Non-photometric, good/average seeing. CAS torque reboot. | T Z | A T Z |
| 17 Apr | 8.0 | 0.0 | 0.3 | Non-photometric, good/average seeing. CAS torque reboot. | T Z | A T Z |
| 16 Apr | 0.0 | 8.4 | 0.0 | Cloud | T Z | A T Z |
| 15 Apr | 5.2 | 0.0 | 3.2 | Photometric. Good/average seeing. CAS overspeed | T Z | A T Z |
| 14 Apr | 2.5 | 6.0 | 0.0 | Photometric. Good seeing. Ridge cloud. | T Z | A T Z |
| 13 Apr | 8.0 | 0.0 | 0.5 | Photometric. Good seeing. Cass node reboot. | T Z | A T Z |
| 12 Apr | 2.0 | 6.6 | 0.0 | Photometric. Average seeing | T Z | A T Z |
| 11 Apr | 0.0 | 8.6 | 0.0 | Wet | T Z | A T Z |
| 10 Apr | 0.0 | 8.6 | 0.0 | Wet | T Z | A T Z |
| 9 Apr | 0.0 | 8.6 | 0.0 | Wet | T Z | A T Z |
| 8 Apr | 1.5 | 7.1 | 0.0 | Nonphotometric, average seeing. | T Z | A T Z |
| 7 Apr | 5.9 | 2.5 | 0.3 | Poor seeing. Non-photometric. Cass node reboot. | T Z | A T Z |
| 6 Apr | 7.4 | 0.0 | 1.3 | Nonphotometric, average seeing, faults with auxiliary mech (optics), azimuth and cassegrain nodes. | T Z | A T Z |
| 5 Apr | 2.5 | 6.3 | 0.0 | Photometric, good seeing, high humidity in second half of night | T Z | A T Z |
| 4 Apr | 8.2 | 0.0 | 0.6 | Nonphotometric, average seeing, cassegrain faults | T Z | A T Z |
| 3 Apr | 2.6 | 6.2 | 0.0 | Non-photometric, average seeing. High humidity for first part of night. | T Z | A T Z |
| 2 Apr | 0.0 | 8.8 | 0.0 | Ice on enclosure mechanisms. | - - | - - - |
| 1 Apr | 0.0 | 8.8 | 0.0 | High humidity and ice | - - | - - - |
March 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Mar | 0.0 | 8.9 | 0.0 | High humidity | - - | - - - |
| 30 Mar | 0.0 | 8.9 | 0.0 | High humidity and low temperatures. | - - | - - - |
| 29 Mar | 0.0 | 9.0 | 0.0 | High humidity and low temperatures. | - - | - - - |
| 28 Mar | 0.0 | 9.0 | 0.0 | High humidity | - - | - - - |
| 27 Mar | 4.5 | 4.3 | 0.2 | Photometric with good/average seeing. Cas torque errors/node reboot. High humidity. | T Z | A T Z |
| 26 Mar | 8.4 | 0.0 | 0.6 | Non-photometric with good/average seeing. Cas torque errors/node reboots. | T Z | A T Z |
| 25 Mar | 2.3 | 6.4 | 0.4 | Photometric with good/average seeing. High humidity. Cas torque errors/node reboots. | T Z | A T Z |
| 24 Mar | 7.5 | 1.7 | 0.0 | Photometric with good/average seeing. High humidity. | T Z | A T Z |
| 23 Mar | 8.2 | 0.0 | 1.0 | Photometric with average seeing. Cas node reboots. | T Z | A T Z |
| 22 Mar | 8.7 | 0.0 | 0.5 | Photometric with average seeing. Cas torque errors. | T Z | A T Z |
| 21 Mar | 9.0 | 0.0 | 0.2 | Photometric with average seeing. Cas node reboot. | T Z | A T Z |
| 20 Mar | 9.1 | 0.0 | 0.2 | Photometric. Cas node reboot. | T Z | A T Z |
| 19 Mar | 0.0 | 9.3 | 0.0 | High humidity | - - | - - - |
| 18 Mar | 5.6 | 2.4 | 1.3 | Photometric with average seeing. Multiple cas torque errors. High humidity at end of night. | T Z | A T Z |
| 17 Mar | 9.4 | 0.0 | 0.0 | Non-photometric with average seeing. | T Z | A T Z |
| 16 Mar | 6.0 | 2.8 | 0.6 | Non-photometric, average seeing. CAS torque errors | T Z | A T Z |
| 15 Mar | 0.0 | 9.4 | 0.0 | High humidity | - - | - - - |
| 14 Mar | 9.0 | 0.0 | 0.4 | Non-photometric, average seeing. CAS torque errors | T Z | A T Z |
| 13 Mar | 0.0 | 9.4 | 0.0 | High humidity and ice risk | - - | - - - |
| 12 Mar | 0.0 | 9.5 | 0.0 | High humidity | - - | - - - |
| 11 Mar | 3.6 | 5.9 | 0.0 | Good seeing, non-photometric. High humidity after 23:30 | T Z | A T Z |
| 10 Mar | 5.9 | 2.6 | 1.0 | Good/average seeing, non-photometric. CAS torque errors | T Z | A T Z |
| 9 Mar | 9.6 | 0.0 | 0.0 | Good/average seeing, non-photometric. | T Z | A T Z |
| 8 Mar | 4.3 | 5.0 | 0.3 | Good/average seeing, non-photometric. High humidity in first half of night. Torque error in cassegrain axis. | T Z | A T Z |
| 7 Mar | 0.0 | 9.6 | 0.0 | High humidity, snow & ice. | - - | - - - |
| 6 Mar | 0.0 | 9.7 | 0.0 | High humidity, snow & ice. | - - | - - - |
| 5 Mar | 0.0 | 9.7 | 0.0 | High humidity, snow & ice. | - - | - - - |
| 4 Mar | 0.0 | 9.7 | 0.0 | High humidity, snow. | - - | - - - |
| 3 Mar | 0.0 | 9.8 | 0.0 | High humidity, snow. | - - | - - - |
| 2 Mar | 0.0 | 9.8 | 0.0 | High humidity, sub-zero temperatures, snow. | - - | - - - |
| 1 Mar | 0.0 | 9.8 | 0.0 | High humidity | - - | - - - |
February 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 28 Feb | 3.3 | 6.5 | 0.0 | Non-photometric with poor to average seeing. High humidity from 00 UT. | T Z | A T Z |
| 27 Feb | 1.0 | 7.9 | 1.0 | Photometric, average seeing. High humidity. Cas node jam/reboot, Devicenet Master Error. | T Z | A T Z |
| 26 Feb | 9.7 | 0.0 | 0.2 | Photometric, average seeing. Cas jam and node reboot. Some LIRIC failures. | T Z | A T Z |
| 25 Feb | 9.5 | 0.0 | 0.4 | Non-photometric, average seeing. Cas jam and cas flywheeling. | T Z | A T Z |
| 24 Feb | 9.9 | 0.0 | 0.0 | Photometric, average seeing. IO:O offline. | T Z | A T Z |
| 23 Feb | 10 | 0.0 | 0.0 | Non-photometric, average seeing. IO:O and LIRIC disabled | T Z | A T Z |
| 22 Feb | 9.7 | 0.0 | 0.3 | Non-photometric, average seeing, CAS torque reboot. IO:O and LIRIC disabled | T Z | A T Z |
| 21 Feb | 8.9 | 0.0 | 1.1 | Non-photometric, poor seeing. DeviceNet fault. CAS torque reboot. LIRIC disabled. IO:O too warm | T Z | A T Z |
| 20 Feb | 9.7 | 0.0 | 0.3 | Non-photometric, good/average seeing. Torque fault in cassegrain axis. | T Z | A T Z |
| 19 Feb | 2.4 | 0.0 | 7.6 | Photometric, good seeing. Power outages. | T Z | A T Z |
| 18 Feb | 5.5 | 4.6 | 0.0 | Photometric, good/average seeing | T Z | A T Z |
| 17 Feb | 0.0 | 10.1 | 0.0 | High humidity | T Z | A T Z |
| 16 Feb | 10.1 | 0.0 | 0.0 | Photometric, good to average seeing | T Z | A T Z |
| 15 Feb | 8.1 | 2.0 | 0.0 | Non-photometric, good seeing | T Z | A T Z |
| 14 Feb | 1.4 | 8.7 | 0.0 | Non-photometric, good seeing | T Z | A T Z |
| 13 Feb | 9.6 | 0.0 | 0.6 | Non-photometric, average seeing. Science fold mirror and cassegrain axis rotator faults. | T Z | A T Z |
| 12 Feb | 10.2 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T Z | A T Z |
| 11 Feb | 0.9 | 9.3 | 0.0 | Photometric, good seeing. High humidity in evening. | T Z | A T Z |
| 10 Feb | 10.2 | 0.0 | 0.0 | Non-photometric, good seeing. | T Z | A T Z |
| 9 Feb | 0.0 | 10.3 | 0.0 | High humidity | T Z | A T Z |
| 8 Feb | 10.3 | 0.0 | 0.0 | Non-photometric with average seeing. | T Z | A T Z |
| 7 Feb | 0.0 | 0.0 | 10.3 | Devicenet error | T Z | A T Z |
| 6 Feb | 10.1 | 0.0 | 0.2 | Photometric with average/good seeing. Cas node reboot. LIRIC offline. | T Z | A T Z |
| 5 Feb | 10.4 | 0.0 | 0.0 | Photometric with average seeing. LIRIC offline. | T Z | A T Z |
| 4 Feb | 10.4 | 0.0 | 0.0 | Photometric with average seeing. | T Z | A T Z |
| 3 Feb | 10.4 | 0.0 | 0.0 | Photometric with average/good seeing. | T Z | A T Z |
| 2 Feb | 10.4 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T Z | A T Z |
| 1 Feb | 0.0 | 10.4 | 0.0 | Only observed during twilight due to high humidity. | T Z | A T Z |
January 2025
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jan | 10.5 | 0.0 | 0.0 | Non-photometric, average seeing. | T Z | A T Z |
| 30 Jan | 10.5 | 0.0 | 0.0 | Non-photometric, average seeing. | T Z | A T Z |
| 29 Jan | 10.1 | 0.0 | 0.4 | Photometric, good/average seeing. Altitude and Cassegrain failures. | T Z | A T Z |
| 28 Jan | 10.6 | 0.0 | 0.0 | Photometric, good/average seeing. | T Z | A T Z |
| 27 Jan | 10.6 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T Z | A T Z |
| 26 Jan | 10.3 | 0.0 | 0.3 | Photometric. Good seeing. Cass torque error. | T Z | A T Z |
| 25 Jan | 10.3 | 0.0 | 0.3 | Non-photometric, good seeing. Cass torque error. | T Z | A T Z |
| 24 Jan | 6.5 | 0.0 | 4.1 | Non-photometric, average seeing. Devicenet fault | T Z | A T Z |
| 23 Jan | 0.0 | 10.6 | 0.0 | High humidity | - - | - - - |
| 22 Jan | 0.0 | 10.6 | 0.0 | High humidity | - - | - - - |
| 21 Jan | 0.0 | 10.6 | 0.0 | Wet | - - | - - - |
| 20 Jan | 0.0 | 10.7 | 0.0 | Wet | - - | - - - |
| 19 Jan | 10.7 | 0.0 | 0.0 | Non-photometric, average seeing. | T Z | A T Z |
| 18 Jan | 10.3 | 0.0 | 0.4 | Non-photometric, good/average seeing. Torque error on cassegrain axis. | T Z | A T Z |
| 17 Jan | 10.7 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T Z | A T Z |
| 16 Jan | 10.7 | 0.0 | 0.0 | Photometric, good/average seeing. | T Z | A T Z |
| 15 Jan | 10.7 | 0.0 | 0.0 | Photometric with average seeing. | T Z | A T Z |
| 14 Jan | 10.3 | 0.0 | 0.4 | Photometric, average seeing. Torque error on cassegrain axis. | T Z | A T Z |
| 13 Jan | 9.0 | 0.0 | 1.7 | Non-photometric, poor seeing. Primary mirror support fault at start of night. | T Z | A T Z |
| 12 Jan | 10.4 | 0.0 | 0.3 | Photometric with average seeing. Devicenet error on startup. | T Z | A T Z |
| 11 Jan | 10.0 | 0.0 | 0.7 | Photometric with average seeing. Cas node reboots. | T Z | A T Z |
| 10 Jan | 10.6 | 0.0 | 0.2 | Photometric with average to poor seeing. Cas torque error. | T Z | A T Z |
| 9 Jan | 10.8 | 0.0 | 0.0 | Photometric with average seeing. | T Z | A T Z |
| 8 Jan | 10.8 | 0.0 | 0.0 | Photometric with average seeing. | T Z | A T Z |
| 7 Jan | 10.6 | 0.0 | 0.2 | Non-photometric with average seeing. Cas torque error. | T Z | A T Z |
| 6 Jan | 10.6 | 0.0 | 0.2 | Non-photometric with average seeing. Cas torque error. | T Z | A T Z |
| 5 Jan | 7.9 | 2.9 | 0.0 | Photometric with average seeing. Hugh humidity at start and end of night. | T Z | A T Z |
| 4 Jan | 0.0 | 10.8 | 0.0 | High humidity | T Z | A T Z |
| 3 Jan | 0.0 | 10.8 | 0.0 | High humidity. | T Z | A T Z |
| 2 Jan | 0.9 | 9.0 | 0.9 | High humidity. Mirror support instability | T Z | A T Z |
| 1 Jan | 0.0 | 10.9 | 0.0 | Cloud | - | A T Z |
