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Night Reports 2020
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 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Dec | 7.0 | 3.5 | 0.4 | Non-photometric, average seeing. High cloud during night. One AMN node reboot. | T | A T - |
| 30 Dec | 0.0 | 10.9 | 0.0 | High humidity, no observing. | - | - |
| 29 Dec | 10.9 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 28 Dec | 10.9 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 27 Dec | 0.0 | 10.9 | 0.0 | High humidity. | - | - |
| 26 Dec | 0.0 | 10.9 | 0.0 | High humidity. | - | - |
| 25 Dec | 0.0 | 10.9 | 0.0 | High humidity. | - | - |
| 24 Dec | 0.0 | 10.9 | 0.0 | Thick cloud and high humidity. | - | - |
| 23 Dec | 8.9 | 2.0 | 0.0 | Non-photometric with average/poor seeing. Closures at evening twilight and 2.15 UT for thick cloud. | T | A T - |
| 22 Dec | 10.7 | 0.2 | 0.0 | Set Photometric, but cloud/high humidity arrived in the morning. Variable seeing. | T | A T - |
| 21 Dec | 10.9 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 20 Dec | 10.9 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 19 Dec | 4.0 | 6.9 | 0.0 | Non-photometric, average seeing. Closed for high humidity. MOPTOP offline. | T | A T - |
| 18 Dec | 10.9 | 0.0 | 0.0 | Non-photometric. Good seeing. | T | A T - |
| 17 Dec | 10.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 16 Dec | 2.6 | 8.3 | 0.0 | Photometric, average-good seeing. Closed for high humidity | T | A T - |
| 15 Dec | 7.4 | 3.5 | 0.0 | Photometric until 3am, then cloud. Average-good seeing. | T | A T - |
| 14 Dec | 6.0 | 4.6 | 0.3 | Photometric, average seeing. High humidity at start of night. One AMN node reboot. | T | A T - |
| 13 Dec | 6.2 | 4.7 | 0.0 | Good seeing. High humidity. | T | A T - |
| 12 Dec | 7.0 | 2.5 | 1.4 | Non-photometric. Good seeing. Scattered cloud at beginning and middle of night. MOPTOP testing. | T | A T - |
| 11 Dec | 10.6 | 0.3 | 0.0 | Photometric, average -poor seeing conditions. | T | A T - |
| 10 Dec | 10.9 | 0.0 | 0.0 | Photometric in average seeing conditions. | T | A T - |
| 9 Dec | 3.3 | 7.6 | 0.0 | Non-photometric, with poor seeing. | T | A T - |
| 8 Dec | 4.0 | 6.9 | 0.0 | Photometric, with average seeing | T | A T - |
| 7 Dec | 8.7 | 2.2 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 6 Dec | 6.5 | 4.2 | 0.0 | Photometric, average/poor seeing. | T | A T - |
| 5 Dec | 2.3 | 8.5 | 0.0 | Non-photometric, average/poor seeing. High humidity and rain most of night. | T | A T - |
| 4 Dec | 5.6 | 5.2 | 0.0 | Non-photometric, average seeing. High humidity and rain. | T | A T - |
| 3 Dec | 7.8 | 3.0 | 0.0 | High humidity in evening, photometric, good-average seeing. | T | A T - |
| 2 Dec | 10.8 | 0.0 | 0.0 | Ice risk | - | - |
| 1 Dec | 0.0 | 10.8 | 0.0 | Ice risk | - | - |
November 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Nov | 0.0 | 10.8 | 0.0 | Ice risk | - | - |
| 29 Nov | 0.0 | 10.7 | 0.0 | Ice | - | - |
| 28 Nov | 0.0 | 10.7 | 0.0 | Ice | - | - |
| 27 Nov | 0.0 | 10.7 | 0.0 | Ice | - | - |
| 26 Nov | 0.0 | 10.7 | 0.0 | Ice | - | - |
| 25 Nov | 0.0 | 10.7 | 0.0 | Cloud | - | - |
| 24 Nov | 9.7 | 1.0 | 0.0 | Photometric. Average seeing. IO:O unavailable. | T | A T - |
| 23 Nov | 0.0 | 0.0 | 10.7 | Offline for scheduled IO:O shutter replacement. | - | - |
| 22 Nov | 8.0 | 2.7 | 0.0 | Non-photometric, high cloud at start of night. IO:O offline for maintenace tomorrow. | T | A T - |
| 21 Nov | 10.7 | 0.0 | 0.0 | Non-photometric, average/poor seeing. | T | A T - |
| 20 Nov | 10.6 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 19 Nov | 10.6 | 0.0 | 0.0 | Non-photometric, mainly average with a little good seeing. | T | A T - |
| 18 Nov | 10.6 | 0.0 | 0.0 | Set Non-photometric but actually photometric. Good/average seeing. | T | A T - |
| 17 Nov | 10.6 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T | A T - |
| 16 Nov | 10.6 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T | A T - |
| 15 Nov | 10.6 | 0.0 | 0.0 | Non-photometric with poor seeing. | T | A T - |
| 14 Nov | 0.0 | 10.6 | 0.0 | High humidity. | T | A T - |
| 13 Nov | 8.0 | 2.6 | 0.0 | High humidity at end of night. | T | A T - |
| 12 Nov | 0.0 | 10.5 | 0.0 | High humidity, cloud. | T | A T - |
| 11 Nov | 0.0 | 10.5 | 0.0 | Cloud and high humidity. | T | A T - |
| 10 Nov | 4.1 | 6.4 | 0.0 | Non-photometric with average seeing. Cloud. | T | A T - |
| 9 Nov | 4.2 | 6.3 | 0.0 | Non-photometric with average seeing. Cloud. | T | A T - |
| 8 Nov | 10.5 | 0.0 | 0.0 | Photometric. Seeing between good/average. | T | A T - |
| 7 Nov | 10.4 | 0.0 | 0.0 | Photometric. Seeing average becoming good. MOPTOP config. failure. | T | A T - |
| 6 Nov | 10.4 | 0.0 | 0.0 | Photometric. Seeing Good/average. | T | A T - |
| 5 Nov | 0.0 | 10.4 | 0.0 | High humidity. No observing. | T | A T - |
| 4 Nov | 3.0 | 7.4 | 0.0 | Non-photometric. Seeing average. High humidity. | T | A T - |
| 3 Nov | 5.8 | 4.6 | 0.0 | Photometric. Seeing average becoming poor. Closed 2nd half of night, high humidity. | T | A T - |
| 2 Nov | 9.3 | 0.6 | 0.4 | Non-photometric. Good/average seeing. Thin cloud. 2x Alt reboots | T | A T - |
| 1 Nov | 9.0 | 0.0 | 1.3 | Average seeing. 5 x Alt reboots | T | A T - |
October 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Oct | 9.0 | 0.0 | 1.2 | Photometric, poor seeing. 5x alt node reboots. | T | A T - |
| 30 Oct | 9.2 | 0.0 | 1.0 | Photometric, average/poor seeing. 2x alt node reboots. | T | A T - |
| 29 Oct | 9.9 | 0.0 | 0.3 | Photometric, average/poor seeing. 1x alt node reboot. | T | A T - |
| 28 Oct | 8.0 | 1.0 | 1.2 | Photometric at start of night, closed for cloud in early morning. Average/good seeing. 3x alt node reboots. | T | A T - |
| 27 Oct | 9.7 | 0.0 | 0.5 | Photometric, average seeing. 2x node reboots (axis and science fold). | T | A T - |
| 26 Oct | 9.7 | 0.0 | 0.5 | Photometric, average seeing. 2x node reboots. | T | A T - |
| 25 Oct | 9.5 | 0.0 | 0.6 | Non-photometric, good seeing. 2x Alt node reboots. | T | A T - |
| 24 Oct | 8.0 | 2.1 | 0.0 | Non-photometric, average seeing. Closed for cloud. | T | A T - |
| 23 Oct | 9.9 | 0.2 | 0.0 | Non-photometric, average seeing. One ALT node reboot. | T | A T - |
| 22 Oct | 0.0 | 10.1 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 21 Oct | 0.0 | 10.1 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 20 Oct | 2.5 | 7.5 | 0.0 | Average to Poor seeing, non-photometric. Closed 2nd half of night due to high humidity. | T | A T - |
| 19 Oct | 0.0 | 10.0 | 0.0 | High humidity all night, no observing. | T | A T - |
| 18 Oct | 0.0 | 10.0 | 0.0 | Wet and windy all night, no observing. | - | - - - |
| 17 Oct | 5.5 | 4.4 | 0.0 | Non-photometric, good-average seeing. Thick cloud in morning. | T | A T - |
| 16 Oct | 5.1 | 4.3 | 0.5 | Non-photometric, good-average seeing. Auxiliary mech node fault in evening, high humidity in morning. | T | A T - |
| 15 Oct | 6.4 | 3.5 | 0.0 | Non-photometric, good seeing. High humidity around midnight. | T | A T - |
| 14 Oct | 7.7 | 1.7 | 0.5 | Non-photometric, average seeing. Auxiliary mech node fault in evening, and high humidity in morning. | T | A T - |
| 13 Oct | 9.8 | 0.0 | 0.6 | Non-photometric, good seeing. Some altitude node faults. | T | A T - |
| 12 Oct | 8.7 | 0.0 | 1.1 | Non-photometric, average seeing. Auxiliary mech and altitude node faults, autorecovered. | T | A T - |
| 11 Oct | 9.7 | 0.0 | 0.1 | Good seeing. Calima rose to 30ug/m3 at 2am. | T | A T - |
| 10 Oct | 9.5 | 0.0 | 0.2 | Good seeing conditions. Technical downtime due to encoder failure. | T | A T - |
| 9 Oct | 9.5 | 0.0 | 0.2 | Good seeing apart from spike of bad seeing around midnight. | T | A T - |
| 8 Oct | 7.5 | 0.0 | 2.2 | Good to average seeing. Some high cloud during night. Network failure during day affecting start of obs. | T | A T - |
| 7 Oct | 9.4 | 0.1 | 0.2 | Spectroscopic conditions with some high cloud esp. at start of night. Alt node reboot, encoder fault. | T | A T - |
| 6 Oct | 0.0 | 9.7 | 0.0 | Bad weather. | T | A T - |
| 5 Oct | 5.8 | 3.7 | 0.2 | Spectroscopic, average seeing. Alt node reboot, encoder fault. | T | A T - |
| 4 Oct | 9.6 | 0.0 | 0.0 | T | A T - | |
| 3 Oct | 9.4 | 0.0 | 0.2 | Photometric, good seeing. Alt node reboot, encoder fault. | T | A T - |
| 2 Oct | 9.0 | 0.0 | 0.6 | Photometric, good seeing. Two alt node reboots, encoder fault. | T | A T - |
| 1 Oct | 9.2 | 0.0 | 0.3 | Photometric, good seeing. Alt node reboot, encoder fault. | T | A T - |
September 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Sep | 8.7 | 0.0 | 0.8 | Photometric, average seeing. Three AMN reboots. | T | A T - |
| 29 Sep | 9.5 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 28 Sep | 8.9 | 0.0 | 0.5 | Photometric, good seeing. Alt node reboot encoder fault. | T | A T - |
| 27 Sep | 8.9 | 0.0 | 0.5 | Photometric, good/average seeing. 2 alt node reboots. | T | A T - |
| 26 Sep | 9.1 | 0.0 | 0.3 | Photometric, good/average seeing. Alt node reboot. | T | A T - |
| 25 Sep | 1.7 | 7.6 | 0.0 | Non-photometric, good/average seeing. High humidity and high cloud. | T | A T - |
| 24 Sep | 2.4 | 7.0 | 0.0 | Non-photometric, average seeing. High humidity and high cloud. | T | A T - |
| 23 Sep | 1.5 | 7.9 | 0.0 | Non-photometric, good/average seeing. High humidity. | T | A T - |
| 22 Sep | 0.0 | 9.2 | 0.0 | Thick high cloud. | - | - - - |
| 21 Sep | 6.4 | 2.4 | 0.5 | Non-photometric with average seeing. Some high cloud. Alt encoder problems leading to 2 reboots. | T | A T - |
| 20 Sep | 9.2 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 19 Sep | 8.6 | 0.0 | 0.6 | Photometric with average/good seeing. ALT reboot. | T | A T - |
| 18 Sep | 9.1 | 0.0 | 0.0 | Non-photometric with good seeing. | T | A T - |
| 17 Sep | 9.1 | 0.0 | 0.0 | Non-photometric with average seeing. | T | A T - |
| 16 Sep | 3.1 | 6.0 | 0.0 | Cloud for most of night. Non-photometric with average seeing. | T | A T - |
| 15 Sep | 0.0 | 9.0 | 0.0 | Thick cloud. | T | A T - |
| 14 Sep | 0.0 | 9.0 | 0.0 | Thick cloud. | T | A T - |
| 13 Sep | 8.0 | 0.0 | 1.0 | Photometric, seeing good to average. | T | A T - |
| 12 Sep | 3.0 | 1.0 | 4.9 | Non-photometric, average seeing. Cloud. Power outage. | T | A T - |
| 11 Sep | 0.0 | 8.9 | 0.0 | No observing. Cloud. | T | A T - |
| 10 Sep | 7.7 | 1.3 | 0.4 | Non-photometric, seeing average to good. ALT reboot, small signal. | T | A T - |
| 9 Sep | 8.5 | 0.0 | 0.3 | Photometric, seeing good to average. ALT reboot, small signal. | T | A T - |
| 8 Sep | 8.8 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 7 Sep | 5.5 | 2.5 | 0.8 | Non-photometric, good seeing. ALT reboot, small signal. | T | A T - |
| 6 Sep | 8.7 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 5 Sep | 8.2 | 0.0 | 0.5 | Photometric, average seeing. 1 Alt Node reboot. | T | A T - |
| 4 Sep | 8.0 | 0.0 | 0.6 | Photometric, average to poor seeing. 2 Alt node reboots. | T | A T - |
| 3 Sep | 8.2 | 0.0 | 0.4 | Photometric, good seeing. One Alt node reboot. | T | A T - |
| 2 Sep | 7.6 | 0.0 | 1.0 | Photometric, seeing unkown. Alt Node reboots and LTProxy not operational. | T | A T - |
| 1 Sep | 7.6 | 0.0 | 1.0 | Photometric, good seeing. Alt node reboots due to poor encoder signal. | T | A T - |
August 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Aug | 8.5 | 0.0 | 0.0 | Photometric, poor seeing. | T | A T - |
| 30 Aug | 8.5 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 29 Aug | 6.5 | 2.0 | 0.0 | Photometric, average seeing. Brief closures for high humidity. | T | A T - |
| 28 Aug | 7.8 | 0.0 | 0.6 | Non-photometric, average seeing. 2 node reboots. | T | A T - |
| 27 Aug | 0.0 | 8.4 | 0.0 | Closed due to high levels of dust. | - | - - - |
| 26 Aug | 0.0 | 8.4 | 0.0 | Closed due to high levels of dust. | - | - - - |
| 25 Aug | 0.0 | 0.0 | 0.0 | No observing due to risk from forest fire nearby. | - | - - - |
| 24 Aug | 0.0 | 0.0 | 0.0 | No observing due to risk from forest fire nearby. | - | - - - |
| 23 Aug | 0.0 | 0.0 | 0.0 | No observing due to risk from forest fire nearby. | - | - - - |
| 22 Aug | 0.0 | 0.0 | 0.0 | No observing due to risk from forest fire nearby. | - | - - - |
| 21 Aug | 0.0 | 0.0 | 0.0 | No observing due to risk from forest fire nearby. | - | - - - |
| 20 Aug | 8.2 | 0.0 | 0.0 | Non-photometric, good 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 seeing. | T | A T - |
| 17 Aug | 8.1 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 16 Aug | 8.1 | 0.0 | 0.0 | Photometric, good seeing. Calima 5um/m3. | T | A T - |
| 15 Aug | 8.1 | 0.0 | 0.0 | Photometric, good seeing. Calima 10ug/m3. | T | A T - |
| 14 Aug | 7.7 | 0.0 | 0.3 | Photometric with mostly good seeing. Technical downtime due to AMN node reboot. | T | A T - |
| 13 Aug | 7.7 | 0.0 | 0.3 | Photometric with good seeing. AMN node reboot. | T | A T - |
| 12 Aug | 6.9 | 0.0 | 1.0 | Photometric with good seeing. AMN node reboot. | T | A T - |
| 11 Aug | 7.9 | 0.0 | 0.0 | Photometric with good seeing for first half of night, average seeing for second. | 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-average seeing. | T | A T - |
| 8 Aug | 7.8 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 7 Aug | 7.8 | 0.0 | 0.0 | Photometric. Excellent seeing. | T | A T - |
| 6 Aug | 7.7 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 5 Aug | 7.7 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 4 Aug | 7.6 | 0.0 | 0.0 | Photometric. Average seeing. | T | A T - |
| 3 Aug | 7.6 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 2 Aug | 0.0 | 7.6 | 0.0 | Closed due to high calima. | - | - - - |
| 1 Aug | 0.3 | 7.3 | 0.0 | Spectroscopic, average seeing. Closed due to thick high cloud/calima. | T | A T - |
July 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jul | 0.0 | 7.6 | 0.0 | Closed due to high calima. | - | - - - |
| 30 Jul | 7.5 | 0.0 | 0.0 | Photometric. Good/average seeing. | T | A T - |
| 29 Jul | 7.5 | 0.0 | 0.0 | Photometric. Good/average seeing. | T | A T - |
| 28 Jul | 7.4 | 0.0 | 0.0 | Photometric. Good/average seeing. | T | A T - |
| 27 Jul | 7.4 | 0.0 | 0.0 | Photometric. Good/average seeing. | T | A T - |
| 26 Jul | 7.4 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 25 Jul | 7.4 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 24 Jul | 7.4 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 23 Jul | 7.3 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 22 Jul | 7.3 | 0.0 | 0.0 | Photometric with good seeing. IO:I offline again. | T | A T - |
| 21 Jul | 7.3 | 0.0 | 0.0 | Photometric. Average/good seeing. IO:I back online. | T | A T - |
| 20 Jul | 7.3 | 0.0 | 0.0 | Photometric. Average/good seeing. Evening comet in skycamA movie | T | A T - |
| 19 Jul | 0.0 | 7.2 | 0.0 | Observing suspended. High calima level | T | A T - |
| 18 Jul | 0.0 | 7.2 | 0.0 | Observing suspended. High calima level. | T | A T - |
| 17 Jul | 3.9 | 3.3 | 0.0 | Non-photometric. Seeing good. Closed because of calima and cloud. | T | A T - |
| 16 Jul | 0.0 | 0.0 | 7.2 | Telescope offline. Mirror support fault. | T | A T - |
| 15 Jul | 0.0 | 0.0 | 7.1 | Telescope offline. Mirror support fault. | T | A T - |
| 14 Jul | 7.1 | 0.0 | 0.0 | Photometric. Average seeing | T | A T - |
| 13 Jul | 6.5 | 0.0 | 0.6 | Photometric, good seeing. AMN reboot at start of night | T | A T - |
| 12 Jul | 6.6 | 0.0 | 0.5 | Photometric, good seeing. Reboot at start of night due to CC7 | T | A T - |
| 11 Jul | 7.1 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 10 Jul | 6.1 | 0.0 | 1.0 | Non-photometric, average/good seeing. AMN reboot issues at start of night. | T | A T - |
| 9 Jul | 6.5 | 0.5 | 0.0 | Non-photometric, some calima (brief closure/oper off), average seeing. | T | A T - |
| 8 Jul | 0.0 | 7.0 | 0.0 | Closed all night for high levels of calima. | T | A T - |
| 7 Jul | 0.0 | 7.0 | 0.0 | Closed all night for high levels of calima. | T | A T - |
| 6 Jul | 7.0 | 0.0 | 0.0 | Non-photometric, good/average seeing. Dust on site. | T | A T - |
| 5 Jul | 6.6 | 0.0 | 0.4 | Non-photometric, good seeing. Slew Error in middle of the night. | T | A T - |
| 4 Jul | 6.6 | 0.0 | 0.4 | Photmetric, average Seeing. Slew Failure errors in middle of night. | T | A T - |
| 3 Jul | 6.2 | 0.0 | 0.8 | Non-photmetric, good seeing. IO:O configuration failures. | T | A T - |
| 2 Jul | 7 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 1 Jul | 6.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
June 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Jun | 6.9 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 29 Jun | 6.9 | 0.0 | 0.0 | Photometric, average-good seeing. | T | A T - |
| 28 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, average-good seeing. | T | A T - |
| 27 Jun | 5.6 | 1.3 | 0.0 | Non-photometric, good seeing. Auxiliary mechanism node fault at start of night. | T | A T - |
| 26 Jun | 6.5 | 0.4 | 0.0 | Non-photometric, average seeing. Auxiliary mechanism node fault at start of night. | T | A T - |
| 25 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 24 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 23 Jun | 6.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 22 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 21 Jun | 6.9 | 0.0 | 0.0 | Non-photometric, average-to-poor seeing. | T | A T - |
| 20 Jun | 6.0 | 0.0 | 0.8 | Non-photometric with good to average seeing. | T | A T - |
| 19 Jun | 6.8 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 18 Jun | 6.8 | 0.0 | 0.0 | Non-photometric with average to bad seeing | T | A T - |
| 17 Jun | 6.9 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 16 Jun | 0.0 | 6.9 | 0.0 | Cloud and calima | T | A T - |
| 15 Jun | 0.1 | 6.8 | 0.0 | Cloud | T | A T - |
| 14 Jun | 0.0 | 6.9 | 0.0 | Thick cloud | T | A T - |
| 13 Jun | 6.9 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 12 Jun | 5.2 | 2.7 | 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 | 3.7 | 3.2 | 0.0 | Non-photometric. Average seeing. | T | A T - |
| 9 Jun | 5.7 | 0.0 | 1.2 | Photometric. Average seeing. Repeated AMN reboots | T | A T - |
| 8 Jun | 6.9 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 7 Jun | 6.8 | 0.0 | 0.2 | Photometric, average seeing. Alt encoder failure. IO:I offline. | T | A T - |
| 6 Jun | 7 | 0.0 | 0.0 | Photometric, good/average seeing. IO:I offline. | T | A T - |
| 5 Jun | 0.0 | 7.0 | 0.0 | High humidity. IO:I offline. | - | - - - |
| 4 Jun | 0.0 | 7.0 | 0.0 | High humidity. IO:I offline. | - | - - - |
| 3 Jun | 0.0 | 7.0 | 0.0 | High humidity. IO:I offline. | - | - - - |
| 2 Jun | 0.0 | 7.0 | 0.0 | High humidity. IO:I offline. | - | - - - |
| 1 Jun | 7 | 0.0 | 0.0 | Photometric, average/poor seeing. IO:I offline. | T | A T - |
May 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 May | 7.1 | 0.0 | 0.0 | Photometric with good seeing. IO:I offline. | T | A T - |
| 30 May | 7.1 | 0.0 | 0.0 | Photometric with average seeing. IO:I offline. | T | A T - |
| 29 May | 5.3 | 1.8 | 0.0 | Non-photometric, good seeing. Time lost due to cloud. IO:I offline | T | A T - |
| 28 May | 0.0 | 7.1 | 0.0 | Thick cloud. | T | A T - |
| 27 May | 7.1 | 0.0 | 0.0 | Photometric with good seeing. IO:I offline. | T | A T - |
| 26 May | 7.2 | 0.0 | 0.0 | Photometric with good seeing. IO:I offline. | T | A T - |
| 25 May | 7.2 | 0.0 | 0.0 | Photometric with average/good seeing. IO:I offline. | T | A T - |
| 24 May | 6.7 | 0.0 | 0.6 | Non-photometric. Seeing good. IO:I warmed-up so unavailable. | T | A T - |
| 23 May | 6.7 | 0.0 | 0.6 | Non-photometric. Seeing good. SYS ALERT interrupted observations. | T | A T - |
| 22 May | 7.3 | 0.0 | 0.0 | Non-photometric. Seeing average/poor. IO:I and Frodospec Blue unavailable. | T | A T - |
| 21 May | 7.3 | 0.0 | 0.0 | Photometric. Seeing average. IO:I unavailable. | T | A T - |
| 20 May | 7.3 | 0.0 | 0.0 | Photometric. Seeing good. | T | A T - |
| 19 May | 6.7 | 0.0 | 0.6 | Photometric. Average seeing. SYS ALERT interrupted observations | T | A T - |
| 18 May | 7.4 | 0.0 | 0.0 | Photometric. Good to average seeing. | T | A T - |
| 17 May | 7.4 | 0.0 | 0.0 | Non-Photometric. Good seeing. | T | A T - |
| 16 May | 7.4 | 0.0 | 0.0 | Photometric. Good Seeing. | T | A T - |
| 15 May | 7.0 | 0.0 | 0.4 | Photometric, Good to Average seeing. Closed mid night erroneously due to bad DWSE reading. | T | A T - |
| 14 May | 0.0 | 7.5 | 0.0 | No Observing. High Humidity all night. | T | A T - |
| 13 May | 6.5 | 1.0 | 0.0 | Photometric, average to poor seeing. | T | A T - |
| 12 May | 5 | 2.5 | 0.0 | Photometric, average seeing. Closed for high humidity. | T | A T - |
| 11 May | 6.0 | 1.5 | 0.0 | Photometric, average seeing. Closed for high humidity. | T | A T - |
| 10 May | 4.6 | 3.0 | 0.0 | Photometric, average seeing. Closed for high humidity. | T | A T - |
| 9 May | 7.6 | 0.0 | 0.0 | Photometric, average/good seeing. | T | A T - |
| 8 May | 7.6 | 0.0 | 0.0 | Photometric, average/good seeing. | T | A T - |
| 7 May | 7.7 | 0.0 | 0.0 | Photometric, average/good seeing. | T | A T - |
| 6 May | 7.6 | 0.1 | 0.0 | Briefly closed for poor weather at start of the night. Non-photometric, average/good seeing. | T | A T - |
| 5 May | 5.4 | 2.4 | 0.0 | Photometric at start of night, closed for cloud later. good/average seeing. | T | A T - |
| 4 May | 7.8 | 0.0 | 0.0 | Non-photometric, good/average seeing. Error with quicklook data transfer. | T | A T - |
| 3 May | 3.8 | 4.1 | 0.0 | Non-photometric, average seeing, rain and wind at start of night. | T | A T - |
| 2 May | 7.9 | 0.0 | 0.0 | Non-photometric, poor seeing. | T | A T - |
| 1 May | 7.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
April 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Apr | 7.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 29 Apr | 8.0 | 0.0 | 0.0 | Photometric, average/good seeing. | T | A T - |
| 28 Apr | 7.7 | 0.3 | 0.0 | Non-photometric with thin cloud at start of night. | T | A T - |
| 27 Apr | 0.0 | 8.0 | 0.0 | No observing due to bad weather/ice risk. | - | - - - |
| 26 Apr | 4.5 | 3.5 | 0.0 | Photometric. Good seeing. High Humidiy 2nd half of night. | T | A T - |
| 25 Apr | 5.5 | 2.6 | 0.0 | Non-photometric. Good seeing. Humidity at end of night. | T | A T - |
| 24 Apr | 8.1 | 0.0 | 0.0 | Photometric. Average seeing. | T | A T - |
| 23 Apr | 0.0 | 8.1 | 0.0 | Closed all night due to high humidity. | T | A T - |
| 22 Apr | 2.5 | 5.6 | 0.0 | Non-photometric. Good seeing. Cloud in second half of night. | T | A T - |
| 21 Apr | 8.1 | 0.0 | 0.0 | Non-photometric. Good seeing. | T | A T - |
| 20 Apr | 8.2 | 0.0 | 0.0 | Photometric. Average-to-good seeing. | T | A T - |
| 19 Apr | 8.2 | 0.0 | 0.0 | Observed in average seeing in non-photometric conditions. | T | A T - |
| 18 Apr | 0.0 | 8.2 | 0.0 | No observing last night. | T | A T - |
| 17 Apr | 0.0 | 8.3 | 0.0 | No observing due to bad weather. | T | A T - |
| 16 Apr | 0.0 | 8.4 | 0.0 | No observing due to high humidity and low temperatures on site. | T | A T - |
| 15 Apr | 1.0 | 7.4 | 0.0 | Opened at beginning of night until humidity closed the observatory. | T | A T - |
| 14 Apr | 0.0 | 8.5 | 0.0 | Did not open due to bad weather. | T | A T - |
| 13 Apr | 0.0 | 8.5 | 0.0 | Did not open due to bad weather. | T | A T - |
| 12 Apr | 0.0 | 0.0 | 0.0 | No observing due to COVID-19 restrictions. | T | A T - |
| 11 Apr | 0.0 | 0.0 | 0.0 | No observing due to COVID-19 restrictions. | T | A T - |
| 10 Apr | 0.0 | 0.0 | 0.0 | No observing due to COVID-19 restrictions. | T | A T - |
| 9 Apr | 8.6 | 0.0 | 0.0 | Photometric with good seeing. IO:O offline. | T | A T - |
| 8 Apr | 7.7 | 0.9 | 0.0 | Photometric with good seeing. High humidity at end of night. IO:I offline. | T | A T - |
| 7 Apr | 7.0 | 1.7 | 0.0 | Non-photometric with good seeing. Some high humidity at the end of the night. | T | A T - |
| 6 Apr | 8.7 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 5 Apr | 8.8 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 4 Apr | 0.0 | 0.0 | 0.0 | No observing due to COVID-19 restrictions. | - | - - - |
| 3 Apr | 0.0 | 0.0 | 0.0 | No observing due to COVID-19 restrictions. | - | - - - |
| 2 Apr | 0.0 | 8.8 | 0.0 | Thick high cloud, only observed during twilight. | T | A T - |
| 1 Apr | 8.8 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T | A T - |
March 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Mar | 8.5 | 0.0 | 0.4 | Non-photometric with good seeing. Science fold move failure. | T | A T - |
| 30 Mar | 8.5 | 0.4 | 0.0 | Set photometric but some cloud arrived later on in the night. Average seeing. | T | A T - |
| 29 Mar | 0.0 | 9.0 | 0.0 | Closed. Ice risk. | T | A T - |
| 28 Mar | 0.0 | 9.0 | 0.0 | Closed. Ice risk. | T | A T - |
| 27 Mar | 0.0 | 9.1 | 0.0 | Closed. Ice risk. | T | A T - |
| 26 Mar | 0.0 | 9.1 | 0.0 | Closed. Ice risk. Cloudy. | T | A T - |
| 25 Mar | 0.0 | 9.2 | 0.0 | Closed. Ice risk. Weather monitor offline. | T | A T - |
| 24 Mar | 0.0 | 9.2 | 0.0 | Closed. Ice risk. | T | A T - |
| 23 Mar | 0.0 | 9.2 | 0.0 | Closed. Ice risk. | T | A T - |
| 22 Mar | 0.0 | 9.2 | 0.0 | Closed. Freezing fog. | T | A T - |
| 21 Mar | 2.5 | 6.8 | 0.0 | Photometric, Average Seeing. Closed for high Humidity 2nd part of night. | T | A T - |
| 20 Mar | 9.3 | 0.0 | 0.0 | Photometric. Average to Good seeing. | T | A T - |
| 19 Mar | 0.0 | 9.3 | 0.0 | Closed. High Humidity. | T | A T - |
| 18 Mar | 0.0 | 9.3 | 0.0 | Closed. High Humidity. | T | A T - |
| 17 Mar | 9.0 | 0.4 | 0.0 | Photometric, average seeing. | T | A T - |
| 16 Mar | 9.4 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 15 Mar | 0.0 | 9.4 | 0.0 | Closed all night due to high humidity and wind speed. | T | A T - |
| 14 Mar | 1.2 | 8.2 | 0.0 | Photometric, average/poor seeing. Closed for high humidity. | T | A T - |
| 13 Mar | 3.5 | 6.0 | 0.0 | Non-photometric, average seeing. Closed for cloud. | T | A T - |
| 12 Mar | 7.5 | 2.0 | 0.0 | Non-photometric, average seeing. Closed for cloud. | T | A T - |
| 11 Mar | 9.3 | 0.0 | 0.2 | Non-photometric, average seeing. Node reboot. | T | A T - |
| 10 Mar | 6.0 | 3.5 | 0.0 | Non-photometric, average/good seeing. Closed for cloud. | T | A T - |
| 9 Mar | 9.6 | 0.0 | 0.0 | Photometric, average/poor seeing. | T | A T - |
| 8 Mar | 9.3 | 0.0 | 0.3 | Non-photometric, poor seeing. Temporary fault with altitude node. | T | A T - |
| 7 Mar | 9.6 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 6 Mar | 9.7 | 0.0 | 0.0 | Photometric, average/poor seeing. | T | A T - |
| 5 Mar | 9.7 | 0.0 | 0.0 | Photometric. | T | A T - |
| 4 Mar | 3.5 | 6.2 | 0.0 | Non-photometric, cloud in first half of night. Average/good seeing. | T | A T - |
| 3 Mar | 9.8 | 0.0 | 0.0 | Non-photometric, average/good seeing. FRODOSpec offline. | T | A T - |
| 2 Mar | 9.8 | 0.0 | 0.0 | Non-photometric, average seeing. FRODOSpec offline. | T | A T - |
| 1 Mar | 8.8 | 1.0 | 0.0 | Non-photometric with average seeing. Some high humidity early on. FRODOspec offline. | T | A T - |
February 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 29 Feb | 9.8 | 0.0 | 0.0 | Photometric with average/good seeing. FRODOspec offline. | T | A T - |
| 28 Feb | 9.8 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 27 Feb | 9.8 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 26 Feb | 9.9 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 25 Feb | 0.0 | 9.9 | 0.0 | Closed due to high calima. | T | A T - |
| 24 Feb | 0.0 | 9.9 | 0.0 | Closed due to high calima. | T | A T - |
| 23 Feb | 0.0 | 10.0 | 0.0 | Closed due to calima. | T | A T - |
| 22 Feb | 2.5 | 7.5 | 0.0 | Variable seeing at beginning of night followed by high calima. | T | A T - |
| 21 Feb | 0.0 | 10.0 | 0.0 | Closed due to risk of ice. | T | A T - |
| 20 Feb | 10 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 19 Feb | 10 | 0.0 | 0.0 | Photometric with average seeing. No IO:I. | T | A T - |
| 18 Feb | 10.1 | 0.0 | 0.0 | Photometric with good to average seeing. | T | A T - |
| 17 Feb | 10.1 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 16 Feb | 10.1 | 0.0 | 0.0 | Non-photometric. Average seeing | T | A T - |
| 15 Feb | 9.8 | 0.0 | 0.3 | Non-photometric. Average seeing | T | A T - |
| 14 Feb | 4.0 | 6.1 | 0.0 | High dust levels delay startup to 03:00. Non-photometric, good seeing. | T | A T - |
| 13 Feb | 8.8 | 0.4 | 1.0 | Photometric until thin cloud at 04:00. Good seeing. | T | A T - |
| 12 Feb | 4.7 | 5.5 | 0.0 | Non-photometric, average seeing. Thin high cloud. | T | A T - |
| 11 Feb | 9.7 | 0.0 | 0.5 | Non-photometric, average to poor seeing. IO:O offline. | T | A T - |
| 10 Feb | 9.9 | 0.0 | 0.3 | Photometric, average seeing. IO:O offline. | T | A T - |
| 9 Feb | 9.3 | 1.0 | 0.0 | Non-photometric, average seeing. Closed for high humidity around mid-night. IO:O offline. | T | A T - |
| 8 Feb | 7.0 | 3.0 | 0.3 | Non-photometric, average seeing. Closed for high humidity in the early morning hours. IO:O offline. | T | A T - |
| 7 Feb | 10.3 | 0.0 | 0.0 | Photometric, average seeing. IO:O offline. | T | A T - |
| 6 Feb | 8.3 | 0.0 | 2.0 | Non-photometric, average seeing. Lost time in resetting the altitude control. IO:O offline. | T | A T - |
| 5 Feb | 9.0 | 0.4 | 1.0 | Non-photometric, average seeing. Lost time in resetting the altitude control. IO:O offline. | T | A T - |
| 4 Feb | 5.0 | 5.4 | 0.0 | Non-photometric, poor seeing. Closed for half the night due to calima. | T | A T - |
| 3 Feb | 8.0 | 2.4 | 0.0 | Non-photometric, poor seeing. Half the night closed for high level cloud. | T | A T - |
| 2 Feb | 10.4 | 0.0 | 0.0 | Photometric, with variable seeing. | T | A T - |
| 1 Feb | 10.4 | 0.0 | 0.0 | Photometric, average/poor seeing. | T | A T - |
January 2020
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jan | 0,0 | 10.5 | 0.0 | No observing, high calima. | - | - - - |
| 30 Jan | 10.5 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 29 Jan | 10.5 | 0.0 | 0.0 | Non-photoemtric, good/average seeing. | T | A T - |
| 28 Jan | 10.6 | 0.0 | 0.0 | Non-photometric, lots of thin high cloud. Variable seeing. | T | A T - |
| 27 Jan | 10.6 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 26 Jan | 0.0 | 10.6 | 0.0 | Closed for ice risk. | T | A T - |
| 25 Jan | 0.0 | 10.6 | 0.0 | Closed for ice risk. | T | A T - |
| 24 Jan | 0.0 | 10.6 | 0.0 | High humidity and ice risk. Closed all night. | T | A T - |
| 23 Jan | 0.0 | 10.6 | 0.0 | High humidity and low temperatures; closed all night. | T | A T - |
| 22 Jan | 0.0 | 10.6 | 0.0 | High humidity and low temperatures; closed all night. | T | A T - |
| 21 Jan | 0.0 | 10.6 | 0.0 | High humidity and low temperatures; closed all night. | T | A T - |
| 20 Jan | 10.7 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 19 Jan | 4.5 | 6.2 | 0.0 | Non-photometric, average seeing. Closed for cloud. | T | A T - |
| 18 Jan | 10.7 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 17 Jan | 10.2 | 0.0 | 0.5 | Photometric, poor seeing. Cass torque caused node reboots. | T | A T - |
| 16 Jan | 10.7 | 0.0 | 0.0 | Photometric, good seeing | T | A T - |
| 15 Jan | 10.7 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 14 Jan | 10.4 | 0.0 | 0.3 | Non-photometric, average seeing. RINGO3 offline. Cass torque caused node reboot. | T | A T - |
| 13 Jan | 7.5 | 1.9 | 1.3 | Non-photometric, poor seeing. IOO back online. MOPTOP on telescope. | T | A T - |
| 12 Jan | 9.0 | 0.0 | 1.7 | Non-photometric, average seeing. IO:O offline. IO:I exposure failures. | T | A T - |
| 11 Jan | 10.7 | 0.0 | 0.0 | Non-photometric, average seeing. IO:O offline. Manual observing conducted at start of night. | T | A T - |
| 10 Jan | 10.8 | 0.0 | 0.0 | Non-photometric, average seeing. IO:O offline. Manual observing conducted throughout night. | T | A T - |
| 9 Jan | 8.3 | 0.0 | 2.5 | Non-photometric, average seeing. IO:O offline. DSWE sensor triggering closures. Manual observing conducted on site after 2am. | T | A T - |
| 8 Jan | 3.0 | 7.8 | 0.0 | Non-photometric, average seeing. IO:O offline. High humidity focing closing during the night. | T | A T - |
| 7 Jan | 5.5 | 5.3 | 0.0 | Non-photometric, average seeing. IO:O offline. High Humidity during night. | T | A T - |
| 6 Jan | 4.0 | 6.8 | 0.0 | Non-photometric, average seeing. IO:O offline. High Humidity during night. | T | A T - |
| 5 Jan | 10.3 | 0.5 | 0.0 | Photometric, average seeing. IO:O offline. Humidity at end of night. | T | A T - |
| 4 Jan | 10.8 | 0.0 | 0.0 | Photometric, average seeing. IO:O offline. | T | A T - |
| 3 Jan | 10.8 | 0.0 | 0.0 | Photometric, average seeing, IO:O offline. | T | A T - |
| 2 Jan | 10.8 | 0.0 | 0.0 | Non-photometric, average seeing, IO:O offline. | T | A T - |
| 1 Jan | 10.9 | 0.0 | 0.0 | Non-photometric, average seeing, IO:O offline. | T | A T - |
