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Night Reports 2021
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.
December 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Dec | 10.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 30 Dec | 10.9 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 29 Dec | 10.9 | 0.0 | 0.0 | Photometric with average to poor seeing. | T | A T - |
| 28 Dec | 10.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 27 Dec | 10.6 | 0.0 | 0.3 | Non-photometric wth good to average seeing. | T | A T - |
| 26 Dec | 10.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 25 Dec | 9.3 | 1.6 | 0.0 | Non-photometric with good seeing. Two short closures for thick cloud. | T | A T - |
| 24 Dec | 10.9 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 23 Dec | 6.0 | 2.2 | 2.7 | Non-photometric. High humidity. M2 pointing problems. | T | A T - |
| 22 Dec | 10.9 | 0.0 | 0.0 | Non-photometric. Good seeing. High cloud at end of night. | T | A T - |
| 21 Dec | 0.0 | 5.6 | 5.3 | Issues with Secondary Mirror Focus, no observing. | T | A T - |
| 20 Dec | 1.2 | 8.2 | 1.5 | Non-photometric, average/poor seeing. Axes tracking issue at start of night. | T | A T - |
| 19 Dec | 10.9 | 0.0 | 0.0 | Non-photometric, average/poor seeing. | T | A T - |
| 18 Dec | 1.1 | 9.5 | 0.3 | High humidity most of the night. Secondary Mirror Focus problem at startup. Non-photometric, average/poor seeing. | T | A T - |
| 17 Dec | 10.9 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 16 Dec | 10.9 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 15 Dec | 0.0 | 10.9 | 0.0 | High humidity, risk of ice. | - | - - - |
| 14 Dec | 1.4 | 9.5 | 0.0 | Mainly high humidity. Non-photometric, average seeing. | T | A T - |
| 13 Dec | 0.0 | 10.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 12 Dec | 0.0 | 10.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 11 Dec | 10.9 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 10 Dec | 0.0 | 10.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 9 Dec | 0.0 | 10.9 | 0.0 | High humidity all night. | - | - - - |
| 8 Dec | 5.9 | 5.0 | 0.0 | Non-photometric, average seeing. High humidity in second half of night. | T | A T - |
| 7 Dec | 0.0 | 10.9 | 0.0 | Volcanic ash risk & high humidity all night. | - | - - - |
| 6 Dec | 0.0 | 10.8 | 0.0 | Volcanic ash risk. | - | - - - |
| 5 Dec | 0.0 | 10.8 | 0.0 | Volcanic ash risk. | - | - - - |
| 4 Dec | 0.0 | 10.8 | 0.0 | Volcanic ash risk. | - | - - - |
| 3 Dec | 10.0 | 0.0 | 0.8 | Non-photometric, seeing poor. Startup fault with ALT axis and secondary focus | T | A T - |
| 2 Dec | 0.8 | 10.0 | 0.0 | High humidity. Non-photometric, average seeing | T | A T - |
| 1 Dec | 0.0 | 10.8 | 0.0 | High humidity | - | - - - |
November 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Nov | 0.0 | 10.8 | 0.0 | Volcanic ash risk & high humidity | - | - - - |
| 29 Nov | 0.0 | 10.7 | 0.0 | Volcanic ash risk & high humidity | - | - - - |
| 28 Nov | 0.0 | 10.7 | 0.0 | High humidity. | - | - - - |
| 27 Nov | 0.0 | 10.7 | 0.0 | High humidity. | - | - - - |
| 26 Nov | 0.0 | 10.7 | 0.0 | High humidity. | - | - - - |
| 25 Nov | 0.0 | 10.7 | 0.0 | Volcanic ash risk & high humidity | - | - - - |
| 24 Nov | 0.0 | 10.7 | 0.0 | Volcanic ash risk & high humidity | - | - - - |
| 23 Nov | 0.0 | 10.7 | 0.0 | Volcanic ash & cloud | - | - - - |
| 22 Nov | 0.0 | 10.7 | 0.0 | Volcanic ash risk. | - | - - - |
| 21 Nov | 0.0 | 10.7 | 0.0 | Volcanic ash & High humidity | - | - - - |
| 20 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash risk. | - | - - - |
| 19 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash & High humidity | - | - - - |
| 18 Nov | 0.0 | 10.6 | 0.0 | High humidity | - | - - - |
| 17 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash risk. | - | - - - |
| 16 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash risk & high humidity | - | - - - |
| 15 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash risk. | - | - - - |
| 14 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash risk. | - | - - - |
| 13 Nov | 0.0 | 10.6 | 0.0 | Volcanic ash risk. | - | - - - |
| 12 Nov | 5.5 | 5.0 | 0.0 | Photometric, average seeing. IOO unavailable. | T | A T - |
| 11 Nov | 0.0 | 10.5 | 0.0 | Volcanic ash risk. | - | - - - |
| 10 Nov | 0.0 | 10.5 | 0.0 | Volcanic ash risk. | - | - - - |
| 9 Nov | 0.0 | 10.5 | 0.0 | Volcanic ash risk. | - | - - - |
| 8 Nov | 0.0 | 10.5 | 0.0 | Volcanic ash risk. | - | - - - |
| 7 Nov | 0.0 | 10.4 | 0.0 | Volcanic ash risk. | - | - - - |
| 6 Nov | 0.0 | 10.4 | 0.0 | Volcanic ash risk. | - | - - - |
| 5 Nov | 0.0 | 10.4 | 0.0 | Volcanic ash risk. | - | - - - |
| 4 Nov | 0.0 | 10.4 | 0.0 | Volcanic ash risk. | - | - - - |
| 3 Nov | 0.0 | 10.4 | 0.0 | Volcanic ash risk. | - | - - - |
| 2 Nov | 0.0 | 10.3 | 0.0 | Volcanic ash risk. | - | - - - |
| 1 Nov | 0.0 | 10.3 | 0.0 | Volcanic ash risk. | - | - - - |
October 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Oct | 0.0 | 10.2 | 0.0 | Volcanic ash risk. | - | - - - |
| 30 Oct | 0.0 | 10.2 | 0.0 | Volcanic ash risk. | - | - - - |
| 29 Oct | 0.0 | 10.2 | 0.0 | Volcanic ash risk. | - | - - - |
| 28 Oct | 9.3 | 0.0 | 0.9 | Photometric, average seeing. Cassegrain and azimuth node errors just before morning. | T | A T - |
| 27 Oct | 10.2 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 26 Oct | 0.0 | 10.2 | 0.0 | Volcanic ash risk. | - | - - - |
| 25 Oct | 10.1 | 0.0 | 0.0 | Photometric, average to poor seeing. | T | A T - |
| 24 Oct | 0.0 | 10.1 | 0.0 | Volcanic ash risk. | - | - - - |
| 23 Oct | 0.0 | 10.1 | 0.0 | Volcanic ash risk. | - | - - - |
| 22 Oct | 0.0 | 10.0 | 0.0 | Volcanic ash risk. | - | - - - |
| 21 Oct | 0.0 | 10.0 | 0.0 | Volcanic ash risk. | - | - - - |
| 20 Oct | 0.0 | 10.0 | 0.0 | Volcanic ash risk. | - | - - - |
| 19 Oct | 0.0 | 10.0 | 0.0 | Volcanic ash risk. RISE repair. | - | - - - |
| 18 Oct | 0.0 | 10.0 | 0.0 | Volcanic ash risk. | - | - - - |
| 17 Oct | 0.0 | 9.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 16 Oct | 0.0 | 9.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 15 Oct | 0.0 | 9.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 14 Oct | 0.0 | 9.9 | 0.0 | Volcanic ash risk. | - | - - - |
| 13 Oct | 0.0 | 9.8 | 0.0 | Volcanic ash risk. | - | - - - |
| 12 Oct | 0.0 | 9.8 | 0.0 | Volcanic ash risk. | - | - - - |
| 11 Oct | 9.5 | 0.0 | 0.3 | Non-photometric with good seeing. Cass node reeboot, Negative Torque limit. | T | A T - |
| 10 Oct | 9.7 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 9 Oct | 9.7 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 8 Oct | 8.3 | 0.0 | 1.4 | Non-photometric with good/average seeing. Secondary mirror focus failure. | T | A T - |
| 7 Oct | 9.7 | 0.0 | 0.0 | Non-photometric with average seeing, plenty of high cloud. | T | A T - |
| 6 Oct | 0.0 | 9.7 | 0.0 | Volcanic ash risk | - | - - - |
| 5 Oct | 0.0 | 9.7 | 0.0 | Volcanic ash risk | - | - - - |
| 4 Oct | 9.6 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 3 Oct | 9.6 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 2 Oct | 9.6 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 1 Oct | 0.0 | 9.5 | 0.0 | Volcanic ash risk | - | - - - |
September 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Sep | 0.0 | 9.5 | 0.0 | Volcanic ash risk | - | - - - |
| 29 Sep | 0.0 | 9.5 | 0.0 | Volcanic ash risk | - | - - - |
| 28 Sep | 9.4 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 27 Sep | 7.7 | 1.7 | 0.0 | Non-photometric with average/good seeing. Cloud. | T | A T - |
| 26 Sep | 0.0 | 9.4 | 0.0 | Closed due to volcanic ash risk. | - | - - - |
| 25 Sep | 0.0 | 9.3 | 0.0 | Closed due to volcanic ash risk. | - | - - - |
| 24 Sep | 0.0 | 9.3 | 0.0 | Closed due to volcanic ash risk. | - | - - - |
| 23 Sep | 0.0 | 9.3 | 0.0 | Closed due to volcanic ash risk. | - | - - - |
| 22 Sep | 3.5 | 5.7 | 0.0 | Photometric, average seeing. Closed due to cloud first half of night. | T | A T - |
| 21 Sep | 9.2 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 20 Sep | 9.2 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 19 Sep | 0.0 | 9.2 | 0.0 | No observing due to risk of damage by ash from nearby volcano. | - | - - - |
| 18 Sep | 9.1 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 17 Sep | 4.3 | 2.8 | 2.0 | Photometric, average seeing. High humidity and rain from clouds on site at beginning and end of night. Secondary mirror focus and cassegrain axis faults. | T | A T - |
| 16 Sep | 0.0 | 9.1 | 0.0 | High humidity all night. | - | - - - |
| 15 Sep | 2.9 | 5.9 | 0.2 | Photometric, average seeing. Secondary mirror stall in evening. High humidity most of night. | T | A T - |
| 14 Sep | 7.9 | 0.0 | 1.1 | Photometric, average seeing. Secondary mirror stall at start of night, altitude node signal issue and autorecovery in early morning. | T | A T - |
| 13 Sep | 0.0 | 9.0 | 0.0 | Mountaintop power cut in evening & no observing rule under external generator power. High humidity at times. | - | - - - |
| 12 Sep | 7.5 | 0.0 | 1.4 | Non-photometric. Average/poor seeing. Focus stall at startup. | T | A T - |
| 11 Sep | 8.9 | 0.0 | 0.0 | Non-photometric. Average seeing. MOPTOP unavailable. | T | A T - |
| 10 Sep | 8.9 | 0.0 | 0.0 | Non-photometric. Good/average seeing. | T | A T - |
| 9 Sep | 8.8 | 0.0 | 0.0 | Non-photometric. Good seeing. MOPTOP unavailable. | T | A T - |
| 8 Sep | 6.0 | 0.0 | 1.8 | Non-photometric. Good seeing. RCS rebooted | T | A T - |
| 7 Sep | 1.3 | 0.0 | 7.5 | Non-photometric. Good seeing. Hydraulics fault. IO:O shutter fail. | T | A T - |
| 6 Sep | 8.7 | 0.0 | 0.0 | Non-photometric. Average seeing. | T | A T - |
| 5 Sep | 8.7 | 0.0 | 0.0 | Non-photometric. Average to poor seeing. | T | A T - |
| 4 Sep | 5.7 | 3.0 | 0.0 | Non-photometric. Poor seeing. Cloud. | T | A T - |
| 3 Sep | 2.7 | 0.0 | 5.9 | Non-photometric. Average seeing. Mirror cover sensor fault. | T | A T - |
| 2 Sep | 8.0 | 0.6 | 0.0 | Photometric. Good seeing. | T | A T - |
| 1 Sep | 8.6 | 0.0 | 0.0 | Photometric. Good seeing, but degrading through night | T | A T - |
August 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Aug | 2.5 | 6.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 30 Aug | 7.9 | 0.0 | 0.6 | Photometric. Good seeing. Focus mechanism fault. | T | A T - |
| 29 Aug | 8.5 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 28 Aug | 8.4 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 27 Aug | 8.4 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 26 Aug | 7.9 | 0.0 | 0.5 | Photometric with good seeing. Cas node reboot. | T | A T - |
| 25 Aug | 8.3 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 24 Aug | 8.3 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 23 Aug | 8.3 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 22 Aug | 0.0 | 0.0 | 8.2 | Altitude node failure | T | A T - |
| 21 Aug | 8.2 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 20 Aug | 8.2 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 19 Aug | 8.2 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 18 Aug | 8.1 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 17 Aug | 8.1 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 16 Aug | 0.0 | 0.0 | 8.1 | AMN failed to boot, TCC failed, no observing. | - | - - - |
| 15 Aug | 3.8 | 4.1 | 0.2 | Non-photometric. Average seeing. High dust. IO:O filter wheel init. errors | T | A T - |
| 14 Aug | 7.0 | 0.0 | 1.0 | Non-photometric. Average seeing. RCS restarted itself. | T | A T - |
| 13 Aug | 8 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 12 Aug | 7.2 | 0.0 | 0.5 | Photometric, average seeing. AMN node reboot. | T | A T - |
| 11 Aug | 7.9 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 10 Aug | 7.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 9 Aug | 7.8 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 8 Aug | 7.8 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 7 Aug | 7.3 | 0.5 | 0.0 | Photometric, good seeing. | T | A T - |
| 6 Aug | 0.0 | 0.0 | 7.7 | RCS config error. No observing. | T | A T - |
| 5 Aug | 7.4 | 0.0 | 0.3 | Photometric, good seeing. Rise restart issue | T | A T - |
| 4 Aug | 7.6 | 0.0 | 0.0 | Photometric, poor seeing. | T | A T - |
| 3 Aug | 7.6 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 2 Aug | 7.6 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 1 Aug | 7.6 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
July 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jul | 7.0 | 0.0 | 0.6 | Non-photometric, good seeing. IO:O filter fault at start | T | A T - |
| 30 Jul | 7.0 | 0.0 | 0.5 | Non-photometric, good seeing. IO:O filter fault at start | T | A T - |
| 29 Jul | 7.5 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 28 Jul | 7.4 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 27 Jul | 7.4 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 26 Jul | 7.4 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 25 Jul | 7.4 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 24 Jul | 0.3 | 7.1 | 0.0 | Non-photometric, good seeing. Stopped observing in evening due to calima. | T | A T - |
| 23 Jul | 7.3 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 22 Jul | 6.8 | 0.0 | 0.5 | Photometric, average-poor seeing. Auxiliary mechanism node fault at middle of night. | T | A T - |
| 21 Jul | 7.3 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 20 Jul | 7.3 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 19 Jul | 7.2 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 18 Jul | 7.2 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 17 Jul | 7.2 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 16 Jul | 7.2 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 15 Jul | 7.1 | 0.0 | 0.0 | Photometric. Average seeing. | T | A T - |
| 14 Jul | 7.1 | 0.0 | 0.0 | Non-photometric (dust). Average seeing. | T | A T - |
| 13 Jul | 3.6 | 3.5 | 0.0 | Non-photometric. Good seeing. Cloud and dust at start of night cleared later. | T | A T - |
| 12 Jul | 3.8 | 0.0 | 3.3 | Non-photometric. Cloud and dust. Average seeing. Hydraulic chiller overheated. | T | A T - |
| 11 Jul | 0.0 | 7.1 | 0.0 | No operations, high calima and thick high cloud. | - | - - - |
| 10 Jul | 7.1 | 0.0 | 0.0 | Set photometric, but broken cloud rolled in after 1am UT. Good/average seeing. | T | A T - |
| 9 Jul | 7 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 8 Jul | 7 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 7 Jul | 7 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 6 Jul | 7 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 5 Jul | 7 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 4 Jul | 7 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 3 Jul | 7 | 0.0 | 0.0 | Photometric with good seeing. IO:O filter wheel problem during evening flats. | T | A T - |
| 2 Jul | 7 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 1 Jul | 6.9 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
June 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Jun | 6.9 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 29 Jun | 6.9 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 28 Jun | 6.9 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 27 Jun | 6.4 | 0.0 | 0.5 | Average-good seeing. Photometric conditions. Alt axis fail. | T | A T - |
| 26 Jun | 6.9 | 0.0 | 0.0 | Average-good seeing. Photometric conditions. | T | A T - |
| 25 Jun | 6.9 | 0.0 | 0.0 | Bad average seeing at very start of night, good seeing thereafter. Photometric conditions./td> | T | A T - |
| 24 Jun | 6.4 | 0.0 | 0.5 | Photometric in good seeing conditions. MOPTOP twilights, some trigger failures | T | A T - |
| 23 Jun | 6.7 | 0.0 | 0.2 | Photometric in good seeing conditions. Repeat of secondary mirror focus problem at oper on. | T | A T - |
| 22 Jun | 5.3 | 0.0 | 1.6 | Photometric with good seeing. Error in secondary mirror focus during oper on. | T | A T - |
| 21 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 20 Jun | 6.8 | 0.0 | 0.0 | Photometric, average/good seeing | T | A T - |
| 19 Jun | 6.8 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 18 Jun | 2.8 | 4.0 | 0.0 | Non-photometric, average seeing. High humidity. | T | A T - |
| 17 Jun | 5.0 | 1.9 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 16 Jun | 6.9 | 0.0 | 0.0 | Photometric, average/good seeing. | T | A T - |
| 15 Jun | 6.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 14 Jun | 5.2 | 1.7 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 13 Jun | 6.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 12 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, good seeing | T | A T - |
| 11 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 10 Jun | 1.3 | 5.6 | 0.0 | Non-photometric, average to good seeing. Closed due to Calima risk during 2nd half og night. | T | A T - |
| 9 Jun | 1.1 | 5.8 | 0.0 | Non-photometric, average seeing. Closed due to Calima and Cloud. | T | A T - |
| 8 Jun | 4 | 2.9 | 0.0 | Non-photometric, poor seeing. | T | A T - |
| 7 Jun | 0.0 | 7.0 | 0.0 | Closed due to cloud. | T | A T - |
| 6 Jun | 2.1 | 4.9 | 0.0 | Non-photometric, good seeing. Cloud second half of night. | T | A T - |
| 5 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 4 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 3 Jun | 0.0 | 7.0 | 0.0 | High humidity. | T | A T - |
| 2 Jun | 4.4 | 2.6 | 0.0 | Non-photometric, average seeing. High humidity at start and middle of night. | T | A T - |
| 1 Jun | 7.0 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
May 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 May | 7.1 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 30 May | 1.7 | 0.0 | 5.4 | Photometric. Average seeing. Az motor sensor fault. | T | A T - |
| 29 May | 3.5 | 0.0 | 3.6 | Non-photometric. Good seeing. Az motor sensor fault. | T | A T - |
| 28 May | 7.1 | 0.0 | 0.0 | Non-photometric. Good seeing. | T | A T - |
| 27 May | 6.0 | 1.1 | 0.0 | Non-photometric. Good seeing. | T | A T - |
| 26 May | 5.3 | 1.9 | 0.0 | Non-photometric. Good seeing. | T | A T - |
| 25 May | 7.2 | 0.0 | 0.0 | Non-photometric. Average seeing. | T | A T - |
| 24 May | 7.3 | 0.0 | 0.0 | Non-photometric. Average seeing. | T | A T - |
| 23 May | 7.3 | 0.0 | 0.0 | Non-photometric with average seeing. | T | A T - |
| 22 May | 7.3 | 0.0 | 0.0 | Photometric with average seeing. Moptop failed. | T | A T - |
| 21 May | 0.0 | 7.3 | 0.0 | High levels of Calima. | - | - - - |
| 20 May | 7.3 | 0.0 | 0.0 | Non-photometric (calima) with average seeing. Moptop failed. | T | A T - |
| 19 May | 7.3 | 0.0 | 0.0 | Photometric with average/poor seeing. | T | A T - |
| 18 May | 7.4 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 17 May | 7.4 | 0.0 | 0.0 | Non-photometric with average seeing. | T | A T - |
| 16 May | 7.4 | 0.0 | 0.0 | Non-photometric (calima) with average seeing. | T | A T - |
| 15 May | 7.4 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 14 May | 7.0 | 0.5 | 0.0 | Average to poor seeing in photometric conditions, with a humidity spike around 2.30am. | T | A T - |
| 13 May | 7.3 | 0.0 | 0.2 | Photometric with average to poor seeing. Secondary mirror focus issue during evening twilight. | T | A T - |
| 12 May | 7.5 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 11 May | 7.5 | 0.0 | 0.0 | Photometric with average/good seeing | T | A T - |
| 10 May | 7.6 | 0.0 | 0.0 | Photometric with good seeing | T | A T - |
| 9 May | 7.3 | 0.3 | 0.0 | Good seeing in photometric conditions. | T | A T - |
| 8 May | 5.0 | 1.6 | 1.0 | High humidity at end of night, Good seeing, photometric. | T | A T - |
| 7 May | 6.7 | 0.0 | 1.0 | Good - average seeing. | T | A T - |
| 6 May | 7.7 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 5 May | 7.8 | 0.0 | 0.0 | Photometric with good to average seeing. | T | A T - |
| 4 May | 7.8 | 0.0 | 0.0 | Photometric in good seeing conditions. | T | A T - |
| 3 May | 3.0 | 4.9 | 0.0 | Non-photometric, high humidity. Average seeing. | T | A T - |
| 2 May | 2.9 | 5.0 | 0.0 | Non-photometric. Seeing average. High humidity. IO:O offline | T | A T - |
| 1 May | 2.9 | 5.0 | 0.0 | Photometric becoming non-photometric. Seeing average. IO:O shutter stuck open | T | A T - |
April 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Apr | 0.2 | 5.7 | 2.0 | High humidity. Problems starting Alt axis. | T | A T - |
| 29 Apr | 0.0 | 8.0 | 0.0 | High humidity. No observing. | T | A T - |
| 28 Apr | 0.0 | 8.0 | 0.0 | High humidity. No observing. | T | A T - |
| 27 Apr | 6.0 | 2.0 | 0.0 | Average seeing, non-photometric. IO:O offline | T | A T - |
| 26 Apr | 7.7 | 0.0 | 0.3 | Good seeing, photometric. IO:O offline | T | A T - |
| 25 Apr | 5.8 | 2.0 | 0.3 | Average seeing, non photmetric. IO:O offline | T | A T - |
| 24 Apr | 0.0 | 8.1 | 0.0 | Closed due to high humidity. | T | A T - |
| 23 Apr | 5.9 | 1.2 | 1.0 | Average seeing, non-photometric. IOO offline, Node 36LV issue on startup. | T | A T - |
| 22 Apr | 8.1 | 0.0 | 0.0 | Photomteric, average seeing. IO:O offline | T | A T - |
| 21 Apr | 8.1 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 20 Apr | 8.2 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 19 Apr | 8.2 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 18 Apr | 4.7 | 0.0 | 3.5 | Non-photometric, average seeing. IO:O offline, L2 alert causing closure. | T | A T - |
| 17 Apr | 8.3 | 0.0 | 0.0 | Photometric, average seeing. IO:O offline. | T | A T - |
| 16 Apr | 7.0 | 1.4 | 0.0 | Photometric, average seeing. Closed for humidity. Faulty IO:O shutter so taken offline. | T | A T - |
| 15 Apr | 4.4 | 4.0 | 0.0 | Non-photometric, average seeing. Closed for humidity. | T | A T - |
| 14 Apr | 6.5 | 2.0 | 0.0 | Non-photometric, average seeing. Closed for humidity. Error with telescope webserver virtual machine. | T | A T - |
| 13 Apr | 0.0 | 8.5 | 0.0 | Closed for high humidity. | - | - - - |
| 12 Apr | 5.6 | 3.0 | 0.0 | Non-photometric, average seeing. Lots of cloud, closed for high humidity. | T | A T - |
| 11 Apr | 0.0 | 8.6 | 0.0 | High humidity, no observing. | - | - - - |
| 10 Apr | 0.0 | 8.6 | 0.0 | High humidity, no observing. | - | - - - |
| 9 Apr | 6.1 | 2.5 | 0.0 | Cloud at start of night, non-photometric, good/average seeing. | T | A T - |
| 8 Apr | 0.0 | 8.6 | 0.0 | High humidity, no observing. | - | - - - |
| 7 Apr | 2.7 | 6.0 | 0.0 | Non-photometric. High humidity and rain at start of night and again early morning through to sunrise. Good-average seeing. | T | A T - |
| 6 Apr | 0.0 | 8.7 | 0.0 | High humidity and some cloud, no observing. | - | - - - |
| 5 Apr | 0.0 | 8.8 | 0.0 | High humidity and some cloud, no observing. | - | - - - |
| 4 Apr | 8.8 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 3 Apr | 3.7 | 4.7 | 0.4 | Non-photometric. Good seeing. AMN reboot to auto-fix SFP fault. | T | A T - |
| 2 Apr | 8.8 | 0.0 | 0.0 | Photometric. Good seeing | T | A T - |
| 1 Apr | 7.9 | 0.9 | 0.0 | Average seeing. Nonphotometric after midnight. | T | A T - |
March 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Mar | 6.4 | 2.5 | 0.0 | Average seeing. Photometric. | T | A T - |
| 30 Mar | 6.5 | 2.4 | 0.0 | Photometric, very poor seeing and humidity later in night. | T | A T - |
| 29 Mar | 9.0 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 28 Mar | 0.0 | 9.0 | 0.0 | Bad weather, high humidity and low temperatures. | - | - - - |
| 27 Mar | 0.0 | 9.1 | 0.0 | High humidity, low temperatures and some high calima. | - | - - - |
| 26 Mar | 0.0 | 9.1 | 0.0 | Bad weather (high humidity, low temperatures and calima at the start of night). | - | - - - |
| 25 Mar | 0.0 | 9.1 | 0.0 | High levels of Calima. | - | - - - |
| 24 Mar | 0.0 | 9.2 | 0.0 | High levels of Calima. | - | - - - |
| 23 Mar | 9.2 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 22 Mar | 9.2 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 21 Mar | 9.2 | 0.0 | 0.0 | Photometric with good seeing. IO:O offline. | T | A T - |
| 20 Mar | 9.3 | 0.0 | 0.0 | Photometric with good seeing. IO:O offline. | T | A T - |
| 19 Mar | 9.05 | 0.0 | 0.25 | Photometric with good seeing. IO:O shutter failure - instrument offline. | T | A T - |
| 18 Mar | 8.8 | 0.0 | 0.5 | Photometric with good seeing. Node reboot. | T | A T - |
| 17 Mar | 9.4 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 16 Mar | 9.4 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 15 Mar | 9.4 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 14 Mar | 8.0 | 1.4 | 0.0 | Non-photometric. Seeing good. | T | A T - |
| 13 Mar | 8.7 | 0.7 | 0.0 | Non-photometric. Seeing average. | T | A T - |
| 12 Mar | 6.6 | 2.9 | 0.0 | Non-photometric. Seeing average. High cloud. | T | A T - |
| 11 Mar | 7.5 | 2.0 | 0.0 | Non-photometric. Seeing going from poor to good. | T | A T - |
| 10 Mar | 9.5 | 0.0 | 0.0 | Non-photometric. Seeing varying average/poor | T | A T - |
| 9 Mar | 5.2 | 0.0 | 4.4 | Photometric. Seeing average. Phase2 database fault in morning. | T | A T - |
| 8 Mar | 1.0 | 8.6 | 0.0 | Photometric. Seeing average. Closed due to high due to high humidity. | T | A T - |
| 7 Mar | 0.0 | 9.6 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 6 Mar | 0.0 | 9.7 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 5 Mar | 0.0 | 9.7 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 4 Mar | 0.0 | 9.7 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 3 Mar | 9.8 | 0.0 | 0.0 | Non-photometric, average to good seeing. | T | A T - |
| 2 Mar | 9.8 | 0.0 | 0.0 | Non-photometric, average seeing. Engineering tests on Moptop during evening twighlight. | T | A T - |
| 1 Mar | 0.0 | 9.8 | 0.0 | Closed due to ice risk on Rams | T | A T - |
February 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 28 Feb | 0.0 | 9.8 | 0.0 | Closed due to ice risk. | T | A T - |
| 27 Feb | 0.0 | 9.8 | 0.0 | Sub zero temperature and high humidity. | T | A T - |
| 26 Feb | 5.6 | 4.3 | 0.0 | Good / average seeing in photometric conditions. | T | A T - |
| 25 Feb | 9.5 | 0.1 | 0.3 | Poor to average seeing in spectrometric conditions. | T | A T - |
| 24 Feb | 0.0 | 9.9 | 0.0 | Closed for night due to high humidity on site. | T | A T - |
| 23 Feb | 10 | 0.0 | 0.0 | Good to average seeing in photometric conditions. | T | A T - |
| 22 Feb | 10 | 0.0 | 0.0 | Average seeing in mixed conditions. | T | A T - |
| 21 Feb | 0.0 | 10.0 | 0.0 | Closed for high humidity. | - | - - - |
| 20 Feb | 0.0 | 10.0 | 0.0 | Closed for high humidity. | - | - - - |
| 19 Feb | 10 | 0.0 | 0.0 | Non-photometric, average/poor seeing. Observations taken in manual at start of night to test new instrument. | T | A T - |
| 18 Feb | 4.6 | 5.5 | 0.0 | Non-photometric, average/good seeing. Closed for cloud. | T | A T - |
| 17 Feb | 10.1 | 0.0 | 0.0 | Photometric, average/poor seeing. Azm node reboot at start of night. | T | A T - |
| 16 Feb | 9.6 | 0.0 | 0.5 | Non-photometric, average seeing. Node reboot due to science fold failure. Possible presence of calima during the night. | T | A T - |
| 15 Feb | 10.1 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 14 Feb | 10.1 | 0.0 | 0.0 | Non-photometric; average-poor seeing. | T | A T - |
| 13 Feb | 10.2 | 0.0 | 0.0 | Non-photometric; average seeing. | T | A T - |
| 12 Feb | 10.2 | 0.0 | 0.0 | Non-photometric; good-average seeing. | T | A T - |
| 11 Feb | 10.2 | 0.0 | 0.0 | Non-photometric; good-average seeing. | T | A T - |
| 10 Feb | 0.0 | 10.2 | 0.0 | No observing; ice on external enclosure mechanisms. | - | - - - |
| 9 Feb | 0.0 | 10.3 | 0.0 | No observing; ice on external enclosure mechanisms. | - | - - - |
| 8 Feb | 0.0 | 10.3 | 0.0 | No observing; ice on external enclosure mechanisms. | - | - - - |
| 7 Feb | 0.0 | 10.3 | 0.0 | No observing; closed due to ice risk. | - | - - - |
| 6 Feb | 0.0 | 10.3 | 0.0 | Snow | - | - - - |
| 5 Feb | 0.0 | 10.4 | 0.0 | Snow | - | - - - |
| 4 Feb | 0.0 | 10.4 | 0.0 | Snow | - | - - - |
| 3 Feb | 1.4 | 9.0 | 0.0 | Photometric, good seeing. Closed by humidity. | T | A T - |
| 2 Feb | 10.4 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 1 Feb | 9.7 | 0.7 | 0.0 | Non-photometric. Average seeing. Brief cloud closure. | T | A T - |
January 2021
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jan | 10.5 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 30 Jan | 10.1 | 0.0 | 0.4 | Photometric, average seeing. AMN failure. | T | A T - |
| 29 Jan | 10.5 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 28 Jan | 10.6 | 0.0 | 0.0 | Photometric, good/average seeing. Moptop configuration errors. | T | A T - |
| 27 Jan | 10.6 | 0.0 | 0.0 | Photometric. IO:O offline. | T | A T - |
| 26 Jan | 10.6 | 0.0 | 0.0 | Photometric. IO:O offline, Raptor engineering work first part of the night. | T | A T - |
| 25 Jan | 10.6 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 24 Jan | 0.0 | 10.6 | 0.0 | No observing; ice risk. | - | - - - |
| 23 Jan | 0.0 | 10.6 | 0.0 | No observing; ice risk. | - | - - - |
| 22 Jan | 0.0 | 10.6 | 0.0 | No observing; ice risk. | - | - - - |
| 21 Jan | 0.0 | 10.6 | 0.0 | No observing; ice risk. | - | - - - |
| 20 Jan | 0.0 | 10.7 | 0.0 | No observing; ice risk. | - | - - - |
| 19 Jan | 0.0 | 10.7 | 0.0 | No observing; ice risk. | - | - - - |
| 18 Jan | 0.0 | 10.7 | 0.0 | No observing; ice risk. | - | - - - |
| 17 Jan | 0.0 | 10.7 | 0.0 | No observing; Ice risk. | - | - - - |
| 16 Jan | 0.0 | 10.7 | 0.0 | No observing; Ice risk. | - | - - - |
| 15 Jan | 0.0 | 10.7 | 0.0 | No observing; Ice risk. | - | - - - |
| 14 Jan | 0.0 | 10.7 | 0.0 | No observing; Ice risk. | - | - - - |
| 13 Jan | 0.0 | 10.7 | 0.0 | No observing; Ice risk. | - | - - - |
| 12 Jan | 0.0 | 10.7 | 0.0 | No observing; closed due to ice risk and high humidity. | - | - - - |
| 11 Jan | 0.0 | 10.7 | 0.0 | No observing; closed due to ice risk and high humidity. | - | - - - |
| 10 Jan | 0.0 | 10.8 | 0.0 | No observing; closed due to ice risk and high humidity. | - | - - - |
| 9 Jan | 0.0 | 10.8 | 0.0 | No observing; closed due to ice risk and high humidity. | - | - - - |
| 8 Jan | 0.0 | 10.8 | 0.0 | No observing; closed due to high humidity. | - | - - - |
| 7 Jan | 0.0 | 10.8 | 0.0 | No observing; closed for high humidity and wind. | - | - - - |
| 6 Jan | 0.0 | 10.8 | 0.0 | No observing; closed for high humidity. | - | - - - |
| 5 Jan | 0.0 | 10.8 | 0.0 | No observing; closed for high humidity. | - | - - - |
| 4 Jan | 0.0 | 10.8 | 0.0 | No observing; closed for high humidity. | - | - - - |
| 3 Jan | 0.0 | 10.8 | 0.0 | No observing. Cloud, high humidity | - | - - - |
| 2 Jan | 0.0 | 10.8 | 0.0 | No observing. Cloud. | - | - - - |
| 1 Jan | 10.9 | 0.0 | 0.0 | Non-photometric. Seeing average. | T | A T - |
