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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.

October 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
26 Oct9.70.00.5Photometric, average seeing. 2x node reboots. T A T -
25 Oct9.50.00.6Non-photometric, good seeing. 2x Alt node reboots. T A T -
24 Oct8.02.10.0Non-photometric, average seeing. Closed for cloud. T A T -
23 Oct9.90.20.0Non-photometric, average seeing. One ALT node reboot. T A T -
22 Oct0.010.10.0Closed all night due to high humidity. T A T -
21 Oct0.010.10.0Closed all night due to high humidity. T A T -
20 Oct2.57.50.0Average to Poor seeing, non-photometric. Closed 2nd half of night due to high humidity. T A T -
19 Oct0.010.00.0High humidity all night, no observing. T A T -
18 Oct0.010.00.0Wet and windy all night, no observing. - - - -
17 Oct5.54.40.0Non-photometric, good-average seeing. Thick cloud in morning. T A T -
16 Oct5.14.30.5Non-photometric, good-average seeing. Auxiliary mech node fault in evening, high humidity in morning. T A T -
15 Oct6.43.50.0Non-photometric, good seeing. High humidity around midnight. T A T -
14 Oct7.71.70.5Non-photometric, average seeing. Auxiliary mech node fault in evening, and high humidity in morning. T A T -
13 Oct9.80.00.6Non-photometric, good seeing. Some altitude node faults. T A T -
12 Oct8.70.01.1Non-photometric, average seeing. Auxiliary mech and altitude node faults, autorecovered. T A T -
11 Oct9.70.00.1Good seeing. Calima rose to 30ug/m3 at 2am. T A T -
10 Oct9.50.00.2Good seeing conditions. Technical downtime due to encoder failure. T A T -
9 Oct9.50.00.2Good seeing apart from spike of bad seeing around midnight. T A T -
8 Oct7.50.02.2Good to average seeing. Some high cloud during night. Network failure during day affecting start of obs. T A T -
7 Oct9.40.10.2Spectroscopic conditions with some high cloud esp. at start of night. Alt node reboot, encoder fault. T A T -
6 Oct0.09.70.0Bad weather. T A T -
5 Oct5.83.70.2Spectroscopic, average seeing. Alt node reboot, encoder fault. T A T -
4 Oct9.60.00.0  T A T -
3 Oct9.40.00.2Photometric, good seeing. Alt node reboot, encoder fault. T A T -
2 Oct9.00.00.6Photometric, good seeing. Two alt node reboots, encoder fault. T A T -
1 Oct9.20.00.3Photometric, good seeing. Alt node reboot, encoder fault. T A T -

September 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
30 Sep8.70.00.8Photometric, average seeing. Three AMN reboots. T A T -
29 Sep9.50.00.0Photometric, good seeing. T A T -
28 Sep8.90.00.5Photometric, good seeing. Alt node reboot encoder fault. T A T -
27 Sep8.90.00.5Photometric, good/average seeing. 2 alt node reboots. T A T -
26 Sep9.10.00.3Photometric, good/average seeing. Alt node reboot. T A T -
25 Sep1.77.60.0Non-photometric, good/average seeing. High humidity and high cloud. T A T -
24 Sep2.47.00.0Non-photometric, average seeing. High humidity and high cloud. T A T -
23 Sep1.57.90.0Non-photometric, good/average seeing. High humidity. T A T -
22 Sep0.09.20.0Thick high cloud. - - - -
21 Sep6.42.40.5Non-photometric with average seeing. Some high cloud. Alt encoder problems leading to 2 reboots. T A T -
20 Sep9.20.00.0Photometric with good seeing. T A T -
19 Sep8.60.00.6Photometric with average/good seeing. ALT reboot. T A T -
18 Sep9.10.00.0Non-photometric with good seeing. T A T -
17 Sep9.10.00.0Non-photometric with average seeing. T A T -
16 Sep3.16.00.0Cloud for most of night. Non-photometric with average seeing. T A T -
15 Sep0.09.00.0Thick cloud. T A T -
14 Sep0.09.00.0Thick cloud. T A T -
13 Sep8.00.01.0Photometric, seeing good to average. T A T -
12 Sep3.01.04.9Non-photometric, average seeing. Cloud. Power outage. T A T -
11 Sep0.08.90.0No observing. Cloud. T A T -
10 Sep7.71.30.4Non-photometric, seeing average to good. ALT reboot, small signal. T A T -
9 Sep8.50.00.3Photometric, seeing good to average. ALT reboot, small signal. T A T -
8 Sep8.80.00.0Non-photometric, average seeing. T A T -
7 Sep5.52.50.8Non-photometric, good seeing. ALT reboot, small signal. T A T -
6 Sep8.70.00.0Non-photometric, average seeing. T A T -
5 Sep8.20.00.5Photometric, average seeing. 1 Alt Node reboot. T A T -
4 Sep8.00.00.6Photometric, average to poor seeing. 2 Alt node reboots. T A T -
3 Sep8.20.00.4Photometric, good seeing. One Alt node reboot. T A T -
2 Sep7.60.01.0Photometric, seeing unkown. Alt Node reboots and LTProxy not operational. T A T -
1 Sep7.60.01.0Photometric, good seeing. Alt node reboots due to poor encoder signal. T A T -

August 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
31 Aug8.50.00.0Photometric, poor seeing. T A T -
30 Aug8.50.00.0Photometric, average seeing. T A T -
29 Aug6.52.00.0Photometric, average seeing. Brief closures for high humidity. T A T -
28 Aug7.80.00.6Non-photometric, average seeing. 2 node reboots. T A T -
27 Aug0.08.40.0Closed due to high levels of dust. - - - -
26 Aug0.08.40.0Closed due to high levels of dust. - - - -
25 Aug0.00.00.0No observing due to risk from forest fire nearby. - - - -
24 Aug0.00.00.0No observing due to risk from forest fire nearby. - - - -
23 Aug0.00.00.0No observing due to risk from forest fire nearby. - - - -
22 Aug0.00.00.0No observing due to risk from forest fire nearby. - - - -
21 Aug0.00.00.0No observing due to risk from forest fire nearby. - - - -
20 Aug8.20.00.0Non-photometric, good seeing. T A T -
19 Aug8.20.00.0Non-photometric, good seeing. T A T -
18 Aug8.10.00.0Non-photometric, good seeing. T A T -
17 Aug8.10.00.0Photometric, average seeing. T A T -
16 Aug8.10.00.0Photometric, good seeing. Calima 5um/m3. T A T -
15 Aug8.10.00.0Photometric, good seeing. Calima 10ug/m3. T A T -
14 Aug7.70.00.3Photometric with mostly good seeing. Technical downtime due to AMN node reboot. T A T -
13 Aug7.70.00.3Photometric with good seeing. AMN node reboot. T A T -
12 Aug6.90.01.0Photometric with good seeing. AMN node reboot. T A T -
11 Aug7.90.00.0Photometric with good seeing for first half of night, average seeing for second. T A T -
10 Aug7.90.00.0Photometric. Good Seeing. T A T -
9 Aug7.80.00.0Photometric. Good-average seeing. T A T -
8 Aug7.80.00.0Photometric. Good seeing. T A T -
7 Aug7.80.00.0Photometric. Excellent seeing. T A T -
6 Aug7.70.00.0Photometric. Good seeing. T A T -
5 Aug7.70.00.0Photometric. Good seeing. T A T -
4 Aug7.60.00.0Photometric. Average seeing. T A T -
3 Aug7.60.00.0Photometric. Good seeing. T A T -
2 Aug0.07.60.0Closed due to high calima. - - - -
1 Aug0.37.30.0Spectroscopic, average seeing. Closed due to thick high cloud/calima. T A T -

July 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
31 Jul0.07.60.0Closed due to high calima. - - - -
30 Jul7.50.00.0Photometric. Good/average seeing. T A T -
29 Jul7.50.00.0Photometric. Good/average seeing. T A T -
28 Jul7.40.00.0Photometric. Good/average seeing. T A T -
27 Jul7.40.00.0Photometric. Good/average seeing. T A T -
26 Jul7.40.00.0Photometric with average seeing. T A T -
25 Jul7.40.00.0Photometric with average/good seeing. T A T -
24 Jul7.40.00.0Photometric with average seeing. T A T -
23 Jul7.30.00.0Photometric with average seeing. T A T -
22 Jul7.30.00.0Photometric with good seeing. IO:I offline again. T A T -
21 Jul7.30.00.0Photometric. Average/good seeing. IO:I back online. T A T -
20 Jul7.30.00.0Photometric. Average/good seeing. Evening comet in skycamA movie T A T -
19 Jul0.07.20.0Observing suspended. High calima level T A T -
18 Jul0.07.20.0Observing suspended. High calima level. T A T -
17 Jul3.93.30.0Non-photometric. Seeing good. Closed because of calima and cloud. T A T -
16 Jul0.00.07.2Telescope offline. Mirror support fault. T A T -
15 Jul0.00.07.1Telescope offline. Mirror support fault. T A T -
14 Jul7.10.00.0Photometric. Average seeing T A T -
13 Jul6.50.00.6Photometric, good seeing. AMN reboot at start of night T A T -
12 Jul6.60.00.5Photometric, good seeing. Reboot at start of night due to CC7 T A T -
11 Jul7.10.00.0Photometric, average seeing. T A T -
10 Jul6.10.01.0Non-photometric, average/good seeing. AMN reboot issues at start of night. T A T -
9 Jul6.50.50.0Non-photometric, some calima (brief closure/oper off), average seeing. T A T -
8 Jul0.07.00.0Closed all night for high levels of calima. T A T -
7 Jul0.07.00.0Closed all night for high levels of calima. T A T -
6 Jul7.00.00.0Non-photometric, good/average seeing. Dust on site. T A T -
5 Jul6.60.00.4Non-photometric, good seeing. Slew Error in middle of the night. T A T -
4 Jul6.60.00.4Photmetric, average Seeing. Slew Failure errors in middle of night. T A T -
3 Jul6.20.00.8Non-photmetric, good seeing. IO:O configuration failures. T A T -
2 Jul70.00.0Non-photometric, good seeing. T A T -
1 Jul6.90.00.0Non-photometric, good seeing. T A T -

June 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
30 Jun6.90.00.0Photometric, average seeing. T A T -
29 Jun6.90.00.0Photometric, average-good seeing. T A T -
28 Jun6.90.00.0Non-photometric, average-good seeing. T A T -
27 Jun5.61.30.0Non-photometric, good seeing. Auxiliary mechanism node fault at start of night. T A T -
26 Jun6.50.40.0Non-photometric, average seeing. Auxiliary mechanism node fault at start of night. T A T -
25 Jun6.90.00.0Non-photometric, average seeing. T A T -
24 Jun6.90.00.0Non-photometric, good seeing. T A T -
23 Jun6.90.00.0Photometric, good seeing. T A T -
22 Jun6.90.00.0Non-photometric, good seeing. T A T -
21 Jun6.90.00.0Non-photometric, average-to-poor seeing. T A T -
20 Jun6.00.00.8Non-photometric with good to average seeing. T A T -
19 Jun6.80.00.0Photometric with good seeing. T A T -
18 Jun6.80.00.0Non-photometric with average to bad seeing T A T -
17 Jun6.90.00.0Photometric with average seeing. T A T -
16 Jun0.06.90.0Cloud and calima T A T -
15 Jun0.16.80.0Cloud T A T -
14 Jun0.06.90.0Thick cloud T A T -
13 Jun6.90.00.0Photometric. Good seeing. T A T -
12 Jun5.22.70.0Non-photometric. Good seeing. T A T -
11 Jun6.90.00.0Non-photometric. Good seeing. T A T -
10 Jun3.73.20.0Non-photometric. Average seeing. T A T -
9 Jun5.70.01.2Photometric. Average seeing. Repeated AMN reboots T A T -
8 Jun6.90.00.0Photometric. Good seeing. T A T -
7 Jun6.80.00.2Photometric, average seeing. Alt encoder failure. IO:I offline. T A T -
6 Jun70.00.0Photometric, good/average seeing. IO:I offline. T A T -
5 Jun0.07.00.0High humidity. IO:I offline. - - - -
4 Jun0.07.00.0High humidity. IO:I offline. - - - -
3 Jun0.07.00.0High humidity. IO:I offline. - - - -
2 Jun0.07.00.0High humidity. IO:I offline. - - - -
1 Jun70.00.0Photometric, average/poor seeing. IO:I offline. T A T -

May 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
31 May7.10.00.0Photometric with good seeing. IO:I offline. T A T -
30 May7.10.00.0Photometric with average seeing. IO:I offline. T A T -
29 May5.31.80.0Non-photometric, good seeing. Time lost due to cloud. IO:I offline T A T -
28 May0.07.10.0Thick cloud. T A T -
27 May7.10.00.0Photometric with good seeing. IO:I offline. T A T -
26 May7.20.00.0Photometric with good seeing. IO:I offline. T A T -
25 May7.20.00.0Photometric with average/good seeing. IO:I offline. T A T -
24 May6.70.00.6Non-photometric. Seeing good. IO:I warmed-up so unavailable. T A T -
23 May6.70.00.6Non-photometric. Seeing good. SYS ALERT interrupted observations. T A T -
22 May7.30.00.0Non-photometric. Seeing average/poor. IO:I and Frodospec Blue unavailable. T A T -
21 May7.30.00.0Photometric. Seeing average. IO:I unavailable. T A T -
20 May7.30.00.0Photometric. Seeing good. T A T -
19 May6.70.00.6Photometric. Average seeing. SYS ALERT interrupted observations T A T -
18 May7.40.00.0Photometric. Good to average seeing. T A T -
17 May7.40.00.0Non-Photometric. Good seeing. T A T -
16 May7.40.00.0Photometric. Good Seeing. T A T -
15 May7.00.00.4Photometric, Good to Average seeing. Closed mid night erroneously due to bad DWSE reading. T A T -
14 May0.07.50.0No Observing. High Humidity all night. T A T -
13 May6.51.00.0Photometric, average to poor seeing. T A T -
12 May52.50.0Photometric, average seeing. Closed for high humidity. T A T -
11 May6.01.50.0Photometric, average seeing. Closed for high humidity. T A T -
10 May4.63.00.0Photometric, average seeing. Closed for high humidity. T A T -
9 May7.60.00.0Photometric, average/good seeing. T A T -
8 May7.60.00.0Photometric, average/good seeing. T A T -
7 May7.70.00.0Photometric, average/good seeing. T A T -
6 May7.60.10.0Briefly closed for poor weather at start of the night. Non-photometric, average/good seeing. T A T -
5 May5.42.40.0Photometric at start of night, closed for cloud later. good/average seeing. T A T -
4 May7.80.00.0Non-photometric, good/average seeing. Error with quicklook data transfer. T A T -
3 May3.84.10.0Non-photometric, average seeing, rain and wind at start of night. T A T -
2 May7.90.00.0Non-photometric, poor seeing. T A T -
1 May7.90.00.0Non-photometric, good seeing. T A T -

April 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
30 Apr7.90.00.0Non-photometric, good seeing. T A T -
29 Apr8.00.00.0Photometric, average/good seeing. T A T -
28 Apr7.70.30.0Non-photometric with thin cloud at start of night. T A T -
27 Apr0.08.00.0No observing due to bad weather/ice risk. - - - -
26 Apr4.53.50.0Photometric. Good seeing. High Humidiy 2nd half of night. T A T -
25 Apr5.52.60.0Non-photometric. Good seeing. Humidity at end of night. T A T -
24 Apr8.10.00.0Photometric. Average seeing. T A T -
23 Apr0.08.10.0Closed all night due to high humidity. T A T -
22 Apr2.55.60.0Non-photometric. Good seeing. Cloud in second half of night. T A T -
21 Apr8.10.00.0Non-photometric. Good seeing. T A T -
20 Apr8.20.00.0Photometric. Average-to-good seeing. T A T -
19 Apr8.20.00.0Observed in average seeing in non-photometric conditions. T A T -
18 Apr0.08.20.0No observing last night. T A T -
17 Apr0.08.30.0No observing due to bad weather. T A T -
16 Apr0.08.40.0No observing due to high humidity and low temperatures on site. T A T -
15 Apr1.07.40.0Opened at beginning of night until humidity closed the observatory. T A T -
14 Apr0.08.50.0Did not open due to bad weather. T A T -
13 Apr0.08.50.0Did not open due to bad weather. T A T -
12 Apr0.00.00.0No observing due to COVID-19 restrictions. T A T -
11 Apr0.00.00.0No observing due to COVID-19 restrictions. T A T -
10 Apr0.00.00.0No observing due to COVID-19 restrictions. T A T -
9 Apr8.60.00.0Photometric with good seeing. IO:O offline. T A T -
8 Apr7.70.90.0Photometric with good seeing. High humidity at end of night. IO:I offline. T A T -
7 Apr7.01.70.0Non-photometric with good seeing. Some high humidity at the end of the night. T A T -
6 Apr8.70.00.0Photometric with average seeing. T A T -
5 Apr8.80.00.0Non-photometric, good/average seeing. T A T -
4 Apr0.00.00.0No observing due to COVID-19 restrictions. - - - -
3 Apr0.00.00.0No observing due to COVID-19 restrictions. - - - -
2 Apr0.08.80.0Thick high cloud, only observed during twilight. T A T -
1 Apr8.80.00.0Non-photometric with good/average seeing. T A T -

March 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
31 Mar8.50.00.4Non-photometric with good seeing. Science fold move failure. T A T -
30 Mar8.50.40.0Set photometric but some cloud arrived later on in the night. Average seeing. T A T -
29 Mar0.09.00.0Closed. Ice risk. T A T -
28 Mar0.09.00.0Closed. Ice risk. T A T -
27 Mar0.09.10.0Closed. Ice risk. T A T -
26 Mar0.09.10.0Closed. Ice risk. Cloudy. T A T -
25 Mar0.09.20.0Closed. Ice risk. Weather monitor offline. T A T -
24 Mar0.09.20.0Closed. Ice risk. T A T -
23 Mar0.09.20.0Closed. Ice risk. T A T -
22 Mar0.09.20.0Closed. Freezing fog. T A T -
21 Mar2.56.80.0Photometric, Average Seeing. Closed for high Humidity 2nd part of night. T A T -
20 Mar9.30.00.0Photometric. Average to Good seeing. T A T -
19 Mar0.09.30.0Closed. High Humidity. T A T -
18 Mar0.09.30.0Closed. High Humidity. T A T -
17 Mar9.00.40.0Photometric, average seeing. T A T -
16 Mar9.40.00.0Non-photometric, average seeing. T A T -
15 Mar0.09.40.0Closed all night due to high humidity and wind speed. T A T -
14 Mar1.28.20.0Photometric, average/poor seeing. Closed for high humidity. T A T -
13 Mar3.56.00.0Non-photometric, average seeing. Closed for cloud. T A T -
12 Mar7.52.00.0Non-photometric, average seeing. Closed for cloud. T A T -
11 Mar9.30.00.2Non-photometric, average seeing. Node reboot. T A T -
10 Mar6.03.50.0Non-photometric, average/good seeing. Closed for cloud. T A T -
9 Mar9.60.00.0Photometric, average/poor seeing. T A T -
8 Mar9.30.00.3Non-photometric, poor seeing. Temporary fault with altitude node. T A T -
7 Mar9.60.00.0Non-photometric, average seeing. T A T -
6 Mar9.70.00.0Photometric, average/poor seeing. T A T -
5 Mar9.70.00.0Photometric. T A T -
4 Mar3.56.20.0Non-photometric, cloud in first half of night. Average/good seeing. T A T -
3 Mar9.80.00.0Non-photometric, average/good seeing. FRODOSpec offline. T A T -
2 Mar9.80.00.0Non-photometric, average seeing. FRODOSpec offline. T A T -
1 Mar8.81.00.0Non-photometric with average seeing. Some high humidity early on. FRODOspec offline. T A T -

February 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
29 Feb9.80.00.0Photometric with average/good seeing. FRODOspec offline. T A T -
28 Feb9.80.00.0Photometric with average seeing. T A T -
27 Feb9.80.00.0Photometric with average seeing. T A T -
26 Feb9.90.00.0Photometric with average seeing. T A T -
25 Feb0.09.90.0Closed due to high calima. T A T -
24 Feb0.09.90.0Closed due to high calima. T A T -
23 Feb0.010.00.0Closed due to calima. T A T -
22 Feb2.57.50.0Variable seeing at beginning of night followed by high calima. T A T -
21 Feb0.010.00.0Closed due to risk of ice. T A T -
20 Feb100.00.0Non-photometric, average seeing. T A T -
19 Feb100.00.0Photometric with average seeing. No IO:I. T A T -
18 Feb10.10.00.0Photometric with good to average seeing. T A T -
17 Feb10.10.00.0Non-photometric, average seeing. T A T -
16 Feb10.10.00.0Non-photometric. Average seeing T A T -
15 Feb9.80.00.3Non-photometric. Average seeing T A T -
14 Feb4.06.10.0High dust levels delay startup to 03:00. Non-photometric, good seeing. T A T -
13 Feb8.80.41.0Photometric until thin cloud at 04:00. Good seeing. T A T -
12 Feb4.75.50.0Non-photometric, average seeing. Thin high cloud. T A T -
11 Feb9.70.00.5Non-photometric, average to poor seeing. IO:O offline. T A T -
10 Feb9.90.00.3Photometric, average seeing. IO:O offline. T A T -
9 Feb9.31.00.0Non-photometric, average seeing. Closed for high humidity around mid-night. IO:O offline. T A T -
8 Feb7.03.00.3Non-photometric, average seeing. Closed for high humidity in the early morning hours. IO:O offline. T A T -
7 Feb10.30.00.0Photometric, average seeing. IO:O offline. T A T -
6 Feb8.30.02.0Non-photometric, average seeing. Lost time in resetting the altitude control. IO:O offline. T A T -
5 Feb9.00.41.0Non-photometric, average seeing. Lost time in resetting the altitude control. IO:O offline. T A T -
4 Feb5.05.40.0Non-photometric, poor seeing. Closed for half the night due to calima. T A T -
3 Feb8.02.40.0Non-photometric, poor seeing. Half the night closed for high level cloud. T A T -
2 Feb10.40.00.0Photometric, with variable seeing. T A T -
1 Feb10.40.00.0Photometric, average/poor seeing. T A T -

January 2020

DateHours UsedCommentSkyCam
ObservingWeatherTechnicalZP PlotMovie
31 Jan0,010.50.0No observing, high calima. - - - -
30 Jan10.50.00.0Non-photometric, good/average seeing. T A T -
29 Jan10.50.00.0Non-photoemtric, good/average seeing. T A T -
28 Jan10.60.00.0Non-photometric, lots of thin high cloud. Variable seeing. T A T -
27 Jan10.60.00.0Photometric, good/average seeing. T A T -
26 Jan0.010.60.0Closed for ice risk. T A T -
25 Jan0.010.60.0Closed for ice risk. T A T -
24 Jan0.010.60.0High humidity and ice risk. Closed all night. T A T -
23 Jan0.010.60.0High humidity and low temperatures; closed all night. T A T -
22 Jan0.010.60.0High humidity and low temperatures; closed all night. T A T -
21 Jan0.010.60.0High humidity and low temperatures; closed all night. T A T -
20 Jan10.70.00.0Non-photometric, good seeing. T A T -
19 Jan4.56.20.0Non-photometric, average seeing. Closed for cloud. T A T -
18 Jan10.70.00.0Photometric, average seeing. T A T -
17 Jan10.20.00.5Photometric, poor seeing. Cass torque caused node reboots. T A T -
16 Jan10.70.00.0Photometric, good seeing T A T -
15 Jan10.70.00.0Photometric, average seeing. T A T -
14 Jan10.40.00.3Non-photometric, average seeing. RINGO3 offline. Cass torque caused node reboot. T A T -
13 Jan7.51.91.3Non-photometric, poor seeing. IOO back online. MOPTOP on telescope. T A T -
12 Jan9.00.01.7Non-photometric, average seeing. IO:O offline. IO:I exposure failures. T A T -
11 Jan10.70.00.0Non-photometric, average seeing. IO:O offline. Manual observing conducted at start of night. T A T -
10 Jan10.80.00.0Non-photometric, average seeing. IO:O offline. Manual observing conducted throughout night. T A T -
9 Jan8.30.02.5Non-photometric, average seeing. IO:O offline. DSWE sensor triggering closures. Manual observing conducted on site after 2am. T A T -
8 Jan3.07.80.0Non-photometric, average seeing. IO:O offline. High humidity focing closing during the night. T A T -
7 Jan5.55.30.0Non-photometric, average seeing. IO:O offline. High Humidity during night. T A T -
6 Jan4.06.80.0Non-photometric, average seeing. IO:O offline. High Humidity during night. T A T -
5 Jan10.30.50.0Photometric, average seeing. IO:O offline. Humidity at end of night. T A T -
4 Jan10.80.00.0Photometric, average seeing. IO:O offline. T A T -
3 Jan10.80.00.0Photometric, average seeing, IO:O offline. T A T -
2 Jan10.80.00.0Non-photometric, average seeing, IO:O offline. T A T -
1 Jan10.90.00.0Non-photometric, average seeing, IO:O offline. T A T -