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Night Reports 2019
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 generally does not include small increments of scheduled downtime (e.g., for planned commissioning or maintenance work taking a small fraction of a night). However it does include major engineering tasks that take the telescope offline for complete nights, for example mirror coating.
The Night Duty Officer estimates whether the night was photometric or non-photometric 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 (∼20°) or SkyCam-Z (1 degree field). Images are obtained once per minute 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 SkyCamT or SkyCamZ Zero Point data are also provided. Zero points here are defined with respect to the APASS r filter 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 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Dec | 10.9 | 0.0 | 0.0 | Photometric, average seeing. IO:O offline. | T | A T - |
| 30 Dec | 10.9 | 0.0 | 0.0 | Non-photometric, average seeing. IO:O offline. | T | A T - |
| 29 Dec | 8.9 | 0.0 | 2.0 | Non-photometric, average seeing. IO:O offline. Delay in start up due to DeviceNet error. | T | A T - |
| 28 Dec | 10.9 | 0.0 | 0.0 | Photometric. Seeing average/good. IO:O offline | T | A T - |
| 27 Dec | 10.9 | 0.0 | 0.0 | Photometric. Seeing average. IO:O offline | T | A T - |
| 26 Dec | 10.9 | 0.0 | 0.0 | Photometric, seeing was poor but slightly improved in the early morning hours. IO:O offline. | T | A T - |
| 25 Dec | 6.8 | 4.1 | 0.0 | Non-photometric, closed for cloud at beginning and end of night. IO:O offline. | T | A T - |
| 24 Dec | 5.9 | 5.0 | 0.0 | Photometric. Average Seeing. Cloud in 2nd half of night. IO:O offline | T | A T - |
| 23 Dec | 7.9 | 3.0 | 0.0 | Photometric. Average Seeing. Cloud at end of night. IO:O offline | T | A T - |
| 22 Dec | 10.9 | 0.0 | 0.0 | Photometric. Very poor seeing. IO:O offline. | T | A T - |
| 21 Dec | 10.9 | 0.0 | 0.0 | Photometric. IO:O offline. | T | A T - |
| 20 Dec | 10.9 | 0.0 | 0.0 | Non-photometric. IO:O offline. | T | A T - |
| 19 Dec | 9.4 | 0.0 | 1.5 | Some cloud, average seeing. IO:O offline. | T | A T - |
| 18 Dec | 6.8 | 4.1 | 0.0 | Very cloudy with average seeing. IO:O offline. | T | A T - |
| 17 Dec | 10.9 | 0.0 | 0.0 | Photometric with average seeing. IO:O offline. | T | A T - |
| 16 Dec | 0.0 | 10.9 | 0.0 | High humidity and sub-zero temperatures | T | A T - |
| 15 Dec | 0.0 | 10.9 | 0.0 | Bad weather throughout night. | T | A T - |
| 14 Dec | 4.9 | 6.0 | 0.0 | Non-photometric with average seeing. IO:O shutter stuck, instrument disabled. | T | A T - |
| 13 Dec | 10.9 | 0.0 | 0.0 | Non-photometric with seeing good - average. IO:O shutter stuck, streaks in data. | T | A T - |
| 12 Dec | 10.9 | 0.0 | 0.0 | Photometric with average seeing at start of night but degrading to poor. | T | A T - |
| 11 Dec | 10.9 | 0.0 | 0.0 | Photometric with seeing going from average to bad during night. | T | A T - |
| 10 Dec | 1.5 | 9.4 | 0.0 | Photometric with average seeing. | T | A T - |
| 9 Dec | 10.9 | 0.0 | 0.0 | Photometric with bad-average seeing. | T | A T - |
| 8 Dec | 2.0 | 8.9 | 0.0 | Opened at towards end of night, poor seeing. | T | A T - |
| 7 Dec | 0.0 | 10.9 | 0.0 | High humidity | - | - |
| 6 Dec | 0.0 | 10.8 | 0.0 | High humidity | - | - |
| 5 Dec | 0.0 | 10.8 | 0.0 | High humidity | - | - |
| 4 Dec | 0.0 | 10.8 | 0.0 | High humidity | - | - |
| 3 Dec | 10.0 | 0.8 | 0.0 | Photometric, average seeing. | T | A T - |
| 2 Dec | 3.7 | 7.1 | 0.0 | Very poor night. High humidty. 2-3" seeing | T | A T - |
| 1 Dec | 10.8 | 0.0 | 0.0 | Photometric, good seeing. High level clouds in early morning hours. | T | A T - |
November 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Nov | 10.8 | 0.0 | 0.0 | Non-photometric in the first few hours of the night, turned Photometric in the latter half. Good seeing. | T | A T - |
| 29 Nov | 10.7 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 28 Nov | 10.2 | 0.0 | 0.5 | Non-photometric, average seeing. | T | A T - |
| 27 Nov | 10.7 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 26 Nov | 10.0 | 0.0 | 0.7 | Photometric in the first half of the night. Good seeing. | T | A T - |
| 25 Nov | 8.7 | 2.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 24 Nov | 7.8 | 2.9 | 0.0 | Non-photometric, good/average seeing. Thick cloud. | T | A T - |
| 23 Nov | 10.7 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 22 Nov | 10.7 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 21 Nov | 7.7 | 2.9 | 0.0 | Non-photometric, average seeing. High humidity. | T | A T - |
| 20 Nov | 6.7 | 3.8 | 0.0 | Non-photometric, good/average seeing. High humidity first half of the night. | T | A T - |
| 19 Nov | 0.0 | 0.0 | 10.6 | Enclosure PLC UPS fault. | - | - - - |
| 18 Nov | 0.0 | 0.0 | 10.6 | Enclosure PLC UPS fault. | - | - - - |
| 17 Nov | 8.8 | 0.5 | 1.3 | Photometric, average seeing. Cassegrain rotator and autoguider faults, high humidity in evening. | T | A T - |
| 16 Nov | 9.9 | 0.7 | 0.0 | Non-photometric, average seeing. High humidity in evening. | T | A T - |
| 15 Nov | 0.0 | 10.6 | 0.0 | Cloud and rain all night. | T | A T - |
| 14 Nov | 0.0 | 10.6 | 0.0 | Cloud and rain all night. | T | A T - |
| 13 Nov | 0.0 | 10.6 | 0.0 | Cloudy all night; no observing. | T | A T - |
| 12 Nov | 5.6 | 4.9 | 0.0 | Non-photometric, average/poor seeing.Thick cloud in second half of night. | T | A T - |
| 11 Nov | 10.0 | 0.0 | 0.5 | Photometric, average seeing. Cassegrain axis rotator fault. | T | A T - |
| 10 Nov | 9.5 | 1.0 | 0.0 | Non-photometric. Seeing poor. Initially high humidity | T | A T - |
| 9 Nov | 8.4 | 2.1 | 0.0 | Non-photometric. Seeing poor. High humidity | T | A T - |
| 8 Nov | 10.5 | 0.0 | 0.0 | Non-photometric becoming photometric. Seeing average. | T | A T - |
| 7 Nov | 3.5 | 6.9 | 0.0 | Non-photometric. Seeing mostly poor. High humidity. | T | A T - |
| 6 Nov | 5.4 | 5.0 | 0.0 | Non-photometric. Seeing poor to average. High humidity | T | A T - |
| 5 Nov | 4.9 | 5.5 | 0.0 | Non-photometric. Seeing average to poor. High humidity | T | A T - |
| 4 Nov | 5.0 | 5.4 | 0.0 | Non-photometric. Seeing average to poor. High humidity | T | A T - |
| 3 Nov | 10.4 | 0.0 | 0.0 | Photometric, average seeing. IO:O offline. | T | A T - |
| 2 Nov | 6.3 | 4.0 | 0.0 | Non-photometric, variable seeing. Closed for humidity. | T | A T - |
| 1 Nov | 9.9 | 0.4 | 0.0 | Non-photometric, variable seeing. High winds. | T | A T - |
October 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Oct | 4.2 | 6.0 | 0.0 | Non-photometric, poor seeing. High wind speed. | T | A T - |
| 30 Oct | 9.7 | 0.5 | 0.0 | Photometric, avagerage to poor seeing. High wind speeds towards end of night. | T | A T - |
| 29 Oct | 10.2 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 28 Oct | 10.2 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 27 Oct | 5.5 | 4.7 | 0.0 | High Humidity. Non-photometric, average to poor seeing. | T | A T - |
| 26 Oct | 0.0 | 10.2 | 0.0 | Closed for full night due to high humidity | T | A T - |
| 25 Oct | 0.8 | 9.3 | 0.0 | Cloudy | T | A T - |
| 24 Oct | 7.1 | 3.0 | 0.0 | Non-photometric, poor seeing. High wind speeds forced close towards end of night. | T | A T - |
| 23 Oct | 10.1 | 0.0 | 0.0 | Photometric. Average seeing, occasional thin high cloud. | T | A T - |
| 22 Oct | 9.1 | 1.0 | 0.0 | Non-photmetric. Average seeing, high cloud in 1st half of night. | T | A T - |
| 21 Oct | 10.1 | 0.0 | 0.0 | Non-photometric. Average to poor seeing. Erroneous light in telescope well may have increased background in some images. | T | A T - |
| 20 Oct | 0.0 | 10.0 | 0.0 | Closed for high humidity. | T | A T - |
| 19 Oct | 9.0 | 1.0 | 0.0 | Photometric, good seeing until early morning. | T | A T - |
| 18 Oct | 10.0 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 17 Oct | 9.9 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 16 Oct | 9.9 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 15 Oct | 9.9 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 14 Oct | 9.9 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 13 Oct | 0.0 | 0.0 | 9.8 | Telescope offline due to oil fault. | T | A T - |
| 12 Oct | 0.0 | 0.0 | 9.8 | Telescope offline due to oil fault. | T | A T - |
| 11 Oct | 9.8 | 0.0 | 0.0 | Photometric with good-average seeing. | T | A T - |
| 10 Oct | 9.7 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 9 Oct | 9.7 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 8 Oct | 9.7 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 7 Oct | 9.7 | 0.0 | 0.0 | Photometric with mostly good seeing. | T | A T - |
| 6 Oct | 9.7 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 5 Oct | 9.7 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 4 Oct | 9.6 | 0.0 | 0.0 | Non-photometric with good seeing. | T | A T - |
| 3 Oct | 9.6 | 0.0 | 0.0 | Non-photometric with average/good seeing. | T | A T - |
| 2 Oct | 9.6 | 0.0 | 0.0 | Non-photometric. Good seeing. | T | A T - |
| 1 Oct | 9.5 | 0.0 | 0.0 | Non-photometric. Good seeing. | T | A T - |
September 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Sep | 6.5 | 0.0 | 3.0 | Recommissioning. AGF mechanism error. Non-photometric. Very hazy. Excellent seeing. | - | A - - |
| 29 Sep | 0.0 | 0.0 | 9.5 | Telescope offline. Mirror recoating. | - | - - - |
| 28 Sep | 0.0 | 0.0 | 9.4 | Telescope offline. Mirror recoating. | - | - - - |
| 27 Sep | 0.0 | 0.0 | 9.4 | Telescope offline. Mirror recoating. | - | - - - |
| 26 Sep | 0.0 | 0.0 | 9.4 | Telescope offline. Mirror recoating. | - | - - - |
| 25 Sep | 0.0 | 0.0 | 9.3 | Telescope offline. Mirror recoating. | - | - - - |
| 24 Sep | 0.0 | 0.0 | 9.3 | Telescope offline. Mirror recoating. | - | - - - |
| 23 Sep | 0.0 | 0.0 | 9.3 | Telescope offline. Mirror recoating. | - | - - - |
| 22 Sep | 0.0 | 0.0 | 9.2 | Telescope offline. Mirror recoating. | - | - - - |
| 21 Sep | 0.0 | 0.0 | 9.2 | Telescope offline. Mirror recoating. | - | - - - |
| 20 Sep | 0.0 | 0.0 | 9.2 | Telescope offline. Mirror recoating. | - | - - - |
| 19 Sep | 0.0 | 0.0 | 0.0 | Telescope offline. Mirror recoating. | - | - - - |
| 18 Sep | 0.0 | 0.0 | 0.0 | Telescope offline. Mirror recoating. | - | - - - |
| 17 Sep | 9.1 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 16 Sep | 8.2 | 0.9 | 0.0 | Non-photometric, good seeing. Cloud at start of night. | T | A T - |
| 15 Sep | 9.0 | 0.0 | 0.0 | Non-photometric, good-poor seeing. | T | A T - |
| 14 Sep | 9.0 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 13 Sep | 9.0 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 12 Sep | 8.4 | 0.0 | 0.5 | Non-photometric, good/average seeing. AMN node reboot in early hours of the morning. | T | A T - |
| 11 Sep | 8.9 | 0.0 | 0.0 | Photometric with good seeing. IO:I unavailable. | T | A T - |
| 10 Sep | 8.9 | 0.0 | 0.0 | Photometric with good seeing. IO:I unavailable. Instrument commissioning until 00.15UT. | T | A T - |
| 9 Sep | 8.8 | 0.0 | 0.0 | Photometric with good seeing. IO:I unavailable. Instrument commissioning until 00 UT. | T | A T - |
| 8 Sep | 8.8 | 0.0 | 0.0 | Non-photometric with poor seeing. IO:I unavailable. Instrument commissioning until 23.45 UT. | T | A T - |
| 7 Sep | 6.8 | 0.0 | 2.0 | Non-photometric with average-good seeing. Instrument commissioning until 22.20 UT. 2 hours lost to thick cloud. IO:O shutter problem fixed. IO:I offline. | T | A T - |
| 6 Sep | 8.7 | 0.0 | 0.0 | Photometric with average seeing. IO:I and IO:O unavailable. | T | A T - |
| 5 Sep | 6.5 | 2.2 | 0.0 | Non-photometric, average seeing. High Humidity. IO:I unavailable. Some IO:O shutter failures. | T | A T - |
| 4 Sep | 8.4 | 0.0 | 0.3 | Non-photometric, good/average seeing. IO:I unavailable. Some IO:O shutter failures. Frodospec problems. Science fold mirror/AMN failure. | T | A T - |
| 3 Sep | 8.6 | 0.0 | 0.0 | Photometric, good average seeing. Some IO:O shutter failures. IO:I unavailable. | T | A T - |
| 2 Sep | 8.6 | 0.0 | 0.0 | Photoemtric, average seeing. IO:I unavailable. | T | A T - |
| 1 Sep | 7.6 | 0.0 | 1.0 | Photometric. Good seeing. Extensive IO:O shutter errors. | T | A T - |
August 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Aug | 5.5 | 0.0 | 3.0 | Photometric. Good/Average seeing. Extensive IO:O shutter errors. | T | A T - |
| 30 Aug | 5.5 | 0.0 | 3.0 | Photometric. Good seeing. Extensive IO:O shutter errors. | T | A T - |
| 29 Aug | 7.5 | 0.0 | 1.0 | Photometric. Good seeing. Extensive IO:O shutter errors. | T | A T - |
| 28 Aug | 6.4 | 0.0 | 2.0 | Photometric. Average seeing. IO:I unavailable. Extensive IO:O shutter errors. | T | A T - |
| 27 Aug | 6.4 | 0.0 | 2.0 | Non-photometric. Average seeing. IO:I unavailable. Extensive IO:O shutter errors. | T | A T - |
| 26 Aug | 3.0 | 0.9 | 4.5 | Non-photometric, seeing good/average. High dust. IO:I unavailable. Extensive IO:O shutter errors. | T | A T - |
| 25 Aug | 5.4 | 0.0 | 2.9 | Non-photometric, seeing good. Power outage. IO:I unavailable. Some IO:O shutter errors. | T | A T - |
| 24 Aug | 0.0 | 8.3 | 0.0 | No observations. High dust count. Autoguider and Frodo Blue overheating. IO:I unavailable. Some IO:O shutter errors. | T | A T - |
| 23 Aug | 5.8 | 2.0 | 0.5 | Non-photometric, seeing good. High dust count. Several AG fails. IO:I unavailable | T | A T - |
| 22 Aug | 8.2 | 0.0 | 0.0 | Non-photometric, seeing good/average. IO:I and Frodo Red unavailable | T | A T - |
| 21 Aug | 8.2 | 0.0 | 0.0 | Non-photometric, average/poor seeing. IO:I unavailable | T | A T - |
| 20 Aug | 8.2 | 0.0 | 0.0 | Non-photometric, average seeing. IO:I unavailable | T | A T - |
| 19 Aug | 8.2 | 0.0 | 0.0 | Non-Photometric, good-average seeing. IO:I unavailable | 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 | Non-photometric, good seeing. | T | A T - |
| 16 Aug | 8.1 | 0.0 | 0.0 | Non-photometric, good-average seeing. | T | A T - |
| 15 Aug | 8.1 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 14 Aug | 8.0 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 13 Aug | 7.5 | 0.0 | 0.5 | Photometric, good seeing. Node reboot caused by fault with science fold mirror. | T | A T - |
| 12 Aug | 7.9 | 0.0 | 0.0 | Photometric, good seeing. | 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/average seeing. | T | A T - |
| 9 Aug | 7.5 | 0.3 | 0.0 | Photometric, good-average seeing. Closed for high humidity. | T | A T - |
| 8 Aug | 7.8 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 7 Aug | 7.8 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 6 Aug | 7.7 | 0.0 | 0.0 | Photometric, average-poor seeing. | T | A T - |
| 5 Aug | 7.7 | 0.0 | 0.0 | Photometric, average 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, average seeing. | T | A T - |
| 2 Aug | 7.6 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 1 Aug | 7.5 | 0.0 | 0.1 | Non-photometric, average seeing. | T | A T - |
July 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jul | 7.6 | 0.0 | 0.17 | Photometric with average seeing | T | A T - |
| 30 Jul | 7.5 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 29 Jul | 7.5 | 0.0 | 2.75 | Non-photometric with bad seeing. Technical fault at startup. | T | A T - |
| 28 Jul | 7.4 | 0.0 | 0.0 | Photometric, good to average seeing. | T | A T - |
| 27 Jul | 7.4 | 0.0 | 0.0 | Photometric. Average seeing. | T | A T - |
| 26 Jul | 7.4 | 0.0 | 0.0 | Photometric. Good seeing | T | A T - |
| 25 Jul | 7.4 | 0.0 | 0.0 | Photometric. Good seeing | T | A T - |
| 24 Jul | 6.7 | 0.0 | 0.7 | Photometric, average seeing. Primary mirror maintenance at start of night. | T | A T - |
| 23 Jul | 7.3 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 22 Jul | 5.9 | 0.0 | 1.4 | Photometric, average/poor seeing. IO:O & FRODOSpec on-sky work in first part of night. | T | A T - |
| 21 Jul | 7.3 | 0.0 | 0.0 | Photometric, average/poor seeing. | T | A T - |
| 20 Jul | 7.3 | 0.0 | 0.0 | Photometric, average/poor seeing. | T | A T - |
| 19 Jul | 7.2 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 18 Jul | 7.2 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 17 Jul | 7.2 | 0.0 | 0.0 | Photometric, good seeing. Very mild calima. | T | A T - |
| 16 Jul | 7.2 | 0.0 | 7.1 | Offline. | T | A T - |
| 15 Jul | 0.0 | 0.0 | 7.1 | Offline. | T | A T - |
| 14 Jul | 7.1 | 0.0 | 0.0 | Photometric, good seeing. IO:O and IO:I were offline. | T | A T - |
| 13 Jul | 7.1 | 0.0 | 0.0 | Photometric, good seeing. Very mild calima. | T | A T - |
| 12 Jul | 7.1 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 11 Jul | 7.1 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 10 Jul | 6.0 | 1.6 | 0.0 | Photometric, good/average seeing. Closed for high humidity in the beginning of the night. | T | A T - |
| 9 Jul | 6 | 0.5 | 0.5 | Most of the night was Photometric, cloud coverage during early hours. Good/average seeing. | T | A T - |
| 8 Jul | 7 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 7 Jul | 7.0 | 0.0 | 0.0 | Photometric, good-average seeing. | T | A T - |
| 6 Jul | 7.0 | 0.0 | 0.0 | Photometric, good-average seeing. | T | A T - |
| 5 Jul | 7.0 | 0.0 | 0.0 | Photometric, good-average seeing. | T | A T - |
| 4 Jul | 6.1 | 0.0 | 0.9 | Photometric, good-average seeing. Cassegrain axis errors and node reboot in early morning. | T | A T - |
| 3 Jul | 7.0 | 0.0 | 0.0 | Photometric, good-to-average seeing. | T | A T - |
| 2 Jul | 7.0 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 1 Jul | 6.4 | 0.0 | 0.5 | Non-photometric, good-poor seeing. AMN node fault in middle of night. | T | A T - |
June 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Jun | 6.9 | 0.0 | 0.0 | Non-photometric with good/average seeing. | T | A T - |
| 29 Jun | 6.9 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 28 Jun | 6.9 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 27 Jun | 6.9 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 26 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 25 Jun | 6.9 | 0.0 | 0.0 | Photometric with good/average seeing. | T | A T - |
| 24 Jun | 6.9 | 0.0 | 0.0 | Photometric with variable seeing. | T | A T - |
| 23 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 22 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 21 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 20 Jun | 0.0 | 0.0 | 6.8 | Telescope offline, oil leak. | - | - - - |
| 19 Jun | 6.8 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 18 Jun | 6.8 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 17 Jun | 6.9 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 16 Jun | 6.9 | 0.0 | 0.0 | Average seeing. | T | A T - |
| 15 Jun | 6.9 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 14 Jun | 6.9 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 13 Jun | 6.9 | 0.0 | 0.0 | Photometric. Good seeing. Poor pointing. | T | A T - |
| 12 Jun | 5.7 | 0.0 | 1.2 | Non-photometric. Seeing average. Primary mirror collimation fault (ACADS). | T | A T - |
| 11 Jun | 6.9 | 0.0 | 0.0 | Photometric. Seeing good. | T | A T - |
| 10 Jun | 6.9 | 0.0 | 0.0 | Non-photometric. Seeing good. IO:I unavailable. | T | A T - |
| 9 Jun | 6.9 | 0.0 | 0.0 | Photometric. Seeing good/average. IO:I unavailable. | T | A T - |
| 8 Jun | 6.9 | 0.0 | 0.0 | Photometric. Seeing good becoming average. IO:I unavailable. | T | A T - |
| 7 Jun | 7.0 | 0.0 | 0.0 | Non-photometric. Seeing good. IO:I unavailable. | T | A T - |
| 6 Jun | 7.0 | 0.0 | 0.0 | Non-photometric. Seeing average. IO:I unavailable. | T | A T - |
| 5 Jun | 7.0 | 0.0 | 0.0 | Non-photometric. Seeing good/average. IO:I unavailable. | T | A T - |
| 4 Jun | 7.0 | 0.0 | 0.0 | Initially non-photometric, photometric after 2:00am. Seeing good to average. IO:I unavailable. | T | A T - |
| 3 Jun | 1.0 | 0.0 | 6.0 | Non-photometric. Good seeing. IO:I unavailable. RCS stuck in wait | T | A T - |
| 2 Jun | 7.0 | 0.0 | 0.0 | Non-photometric with average to bad seeing. | T | A T - |
| 1 Jun | 7.0 | 0.0 | 0.0 | Non-photometric with average to poor seeing. | T | A T - |
May 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 May | 7.0 | 0.0 | 0.1 | Photometric with good seeing. | T | A T - |
| 30 May | 7.1 | 0.0 | 0.0 | Photometric with good seeing. | T | A T - |
| 29 May | 7.1 | 0.0 | 0.0 | Photometric, with average seeing | T | A T - |
| 28 May | 7.1 | 0.0 | 0.0 | Photometric good seeing. | T | A T - |
| 27 May | 7.1 | 0.0 | 0.0 | Photometric, poor-average seeing. | T | A T - |
| 26 May | 7.2 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 25 May | 6.0 | 0.0 | 1.2 | Photometric, good-average seeing. Power outage left system in suspend at start-up. Fault reset. | T | A T - |
| 24 May | 7.3 | 0.0 | 0.0 | Photometric, average-poor seeing. | T | A T - |
| 23 May | 7.3 | 0.0 | 0.0 | Photometric average to poor seeing. | T | A T - |
| 22 May | 6.3 | 0.0 | 1.0 | Photometric, average seeing. Engineering work at start of night. Some issues with pointing. | T | A T - |
| 21 May | 7.3 | 0.0 | 0.0 | Non-photometric, good-average seeing. | T | A T - |
| 20 May | 7.1 | 0.0 | 0.2 | Spectroscopic (small clouds), average-poor seeing | T | A T - |
| 19 May | 7.3 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 18 May | 7.4 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 17 May | 7.4 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 16 May | 7.4 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 15 May | 0.0 | 7.4 | 0.0 | Thick high cloud all night until morning twilight. | T | A T - |
| 14 May | 7.5 | 0.0 | 0.0 | Photometric, average seeing. Instrument Comissioning first couple of hours of the night. | T | A T - |
| 13 May | 7.2 | 0.0 | 0.3 | Non-photometric, good/average seeing. Instrument Comissioning until 3am UTC with a break midnight to 1am UT. Autoguider focus failure. | T | A T - |
| 12 May | 7.5 | 0.0 | 0.0 | Non-photometric, good/average seeing. Instrument Comissioning until 3am UTC. | T | A T - |
| 11 May | 7.5 | 0.0 | 0.0 | Set photometric, but some light cloud appeared during the night. Good/average seeing. Instrument comissioning first half of night. | T | A T - |
| 10 May | 7.6 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 9 May | 7.6 | 0.0 | 0.0 | Photometric, good/average seeing. High level clouds during the second half of the night. | T | A T - |
| 8 May | 7.6 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 7 May | 7.7 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 6 May | 6.2 | 0.0 | 1.5 | Photometric, good average seeing. | T | A T - |
| 5 May | 7.8 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 4 May | 7.8 | 0.0 | 0.0 | Photometric, good average seeing. | T | A T - |
| 3 May | 7.9 | 0.0 | 0.0 | Photometric, average seeing. Only one encoder homed on Altitude axis. | T | A T - |
| 2 May | 7.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 1 May | 7.9 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
April 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 30 Apr | 7.9 | 0.0 | 0.0 | Non-photometric, seeing average to good. | T | A T - |
| 29 Apr | 8 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 28 Apr | 8.0 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 27 Apr | 8.0 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 26 Apr | 8.0 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 25 Apr | 7.8 | 0.0 | 0.3 | Non-photometric, good/average seeing. Intermittent Cassegrain axis fault. | T | A T - |
| 24 Apr | 7.4 | 0.0 | 0.7 | Non-photometric, good/average seeing. Cassegrain axis fault, autorecovered. | T | A T - |
| 23 Apr | 5.5 | 2.6 | 0.0 | Non-photometric, high humidity in middle of the night. Good/average seeing. | T | A T - |
| 22 Apr | 8.1 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 21 Apr | 8.1 | 0.0 | 0.0 | Set photometric, but a few light clouds appeared throughout the night. Good/average seeing. | T | A T - |
| 20 Apr | 8.2 | 0.0 | 0.0 | Photometric, variable seeing. | T | A T - |
| 19 Apr | 8.2 | 0.0 | 0.0 | Photometric, variable seeing. | T | A T - |
| 18 Apr | 8.2 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 17 Apr | 8.3 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 16 Apr | 5.7 | 2.7 | 0.0 | Non-photometric, lots of high cloud, average seeing. High humidity. | T | A T - |
| 15 Apr | 8.4 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 14 Apr | 7.7 | 0.8 | 0.0 | Non-photometric with good seeing. Cloud. | T | A T - |
| 13 Apr | 8.5 | 0.0 | 0.0 | Photometric with good seeing | T | A T - |
| 12 Apr | 6.1 | 0.0 | 2.5 | Non-photometric with average/good seeing. | T | A T - |
| 11 Apr | 8.6 | 0.0 | 0.0 | Non-photometric with average/good seeing. | T | A T - |
| 10 Apr | 8.6 | 0.0 | 0.0 | Photometric with average/good seeing. | T | A T - |
| 9 Apr | 8.6 | 0.0 | 0.0 | Photometric with average seeing. | T | A T - |
| 8 Apr | 8.6 | 0.0 | 0.0 | Non-photometric with good seeing | T | A T - |
| 7 Apr | 8.7 | 0.0 | 0.0 | Photometric. IO:O shutter fault | T | A T - |
| 6 Apr | 0.0 | 8.7 | 0.0 | Ice | - | - |
| 5 Apr | 0.0 | 8.8 | 0.0 | Ice | - | - |
| 4 Apr | 3.0 | 5.8 | 0.0 | Photometric then high humidity | T | A T - |
| 3 Apr | 0.0 | 8.8 | 0.0 | Humidity. Cloud. Wet. | - | - |
| 2 Apr | 0.0 | 8.8 | 0.0 | Humidity. Cloud. Wet. | - | - |
| 1 Apr | 0.0 | 8.8 | 0.0 | Humidity. Cloud. Wet. | - | - |
March 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Mar | 0.0 | 8.9 | 0.0 | Closed. High humidity, cloud. | - | A T - |
| 30 Mar | 0.0 | 8.9 | 0.0 | Closed. High humidity, ice risk. | - | A T - |
| 29 Mar | .0.0 | 9.0 | 0.0 | Closed. High humidity, snow. | - | A T - |
| 28 Mar | 0.0 | 9.1 | 0.0 | Closed. High humidity. | - | A T - |
| 27 Mar | 0.0 | 9.1 | 0.0 | Closed. High humidity, snow. | - | A T - |
| 26 Mar | 0.0 | 9.1 | 0.0 | Closed. High humidity. | - | A T - |
| 25 Mar | 0.0 | 9.1 | 0.0 | Closed. High humidity. | - | A T - |
| 24 Mar | 0.0 | 9.2 | 0.0 | Closed for high humidity. | - | A T - |
| 23 Mar | 7.0 | 2.2 | 0.0 | Photometric, good/average seeing. Closed for high humidity. | T | A T - |
| 22 Mar | 9.2 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 21 Mar | 8.9 | 0.0 | 0.3 | Non-photometric, average seeing. Alt node reboot. | T | A T - |
| 20 Mar | 9.0 | 0.0 | 0.3 | Non-photometric, average seeing. Alt node reboot. | T | A T - |
| 19 Mar | 9.0 | 0.0 | 0.3 | Photometric, average seeing. Alt node reboot. | T | A T - |
| 18 Mar | 9.0 | 0.0 | 0.3 | Non-photometric, average seeing. Alt node reboot. | T | A T - |
| 17 Mar | 3.0 | 6.4 | 0.0 | Non-photometric. Good seeing until high-level clouds arrived. | T | A T - |
| 16 Mar | 9.4 | 0.0 | 0.0 | Photometric. Average seeing. | T | A T - |
| 15 Mar | 9.4 | 0.0 | 0.0 | Photometric. Good/average seeing. | T | A T - |
| 14 Mar | 9.4 | 0.0 | 0.0 | Non-photometric. Average seeing. | T | A T - |
| 13 Mar | 9.4 | 0.0 | 0.0 | Non-photometric. Good seeing. Some IO:O images used bad flat image. | T | A T - |
| 12 Mar | 9.5 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 11 Mar | 9.5 | 0.0 | 0.0 | Non-photometric, good/average seeing. | T | A T - |
| 10 Mar | 0.0 | 0.0 | 9.5 | Technical UPS fault, telescope offline. | - | - |
| 9 Mar | 0.0 | 0.0 | 9.6 | Technical UPS fault. | - | - |
| 8 Mar | 0.0 | 0.0 | 9.6 | Technical UPS fault, telescope offline. | - | - |
| 7 Mar | 0.0 | 9.6 | 0.0 | High humidity all night, no observing. | - | - |
| 6 Mar | 9.7 | 0.0 | 0.0 | Average to bad seeing in non photometric conditions. | T | A T - |
| 5 Mar | 2.7 | 7.1 | 0.0 | Non photometric with good to average seeing. High humidity and low temperatures resulting in an hour of ice this morning. | T | A T - |
| 4 Mar | 9.7 | 0.0 | 0.0 | Non-photometric with average seeing. | T | A T - |
| 3 Mar | 9.8 | 0.0 | 0.0 | Non-photometric, good seeing. 3 Cassegrain axis stops. | T | A T - |
| 2 Mar | 9.8 | 0.0 | 0.0 | Photometric, good seeing. | T | A T - |
| 1 Mar | 7.3 | 2.5 | 0.0 | Non-photometric, average seeing. High cloud 2nd half of night. | T | A T - |
February 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 28 Feb | 6.8 | 0.0 | 3.0 | Non-photometric, good-average seeing. 2 Cassegrain Node reboots, leading to repeat of hour long groups. | T | A T - |
| 27 Feb | 9.8 | 0.0 | 0.0 | Non-photometric,good-average seeing. | T | A T - |
| 26 Feb | 9.9 | 0.0 | 0.0 | Non-photometric, good seeing. | T | A T - |
| 25 Feb | 9.9 | 0.0 | 0.0 | Non-photometric, good-average seeing. High cloud 2nd half of night. | T | A T - |
| 24 Feb | 9.9 | 0.0 | 0.0 | Photometric, good-average seeing. | T | A T - |
| 23 Feb | 10.0 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 22 Feb | 10.0 | 0.0 | 0.0 | Non-photometric, average-poor seeing. | T | A T - |
| 21 Feb | 4.8 | 5.2 | 0.0 | Non-photometric, poor seeing. Very windy at times. | T | A T - |
| 20 Feb | 6.2 | 3.8 | 0.0 | Non-photometric, good-to-average seeing. Cloud during first half of the night. | T | A T - |
| 19 Feb | 4.1 | 5.9 | 0.0 | Non-photometric, average seeing. Cloud in middle of night. | T | A T - |
| 18 Feb | 0.0 | 10.1 | 0.0 | Ice risk on enclosure mechanisms. | - | - |
| 17 Feb | 0.0 | 10.1 | 0.0 | Ice | - | - |
| 16 Feb | 0.0 | 10.1 | 0.0 | Ice | - | - |
| 15 Feb | 0.0 | 10.1 | 0.0 | Ice | - | - |
| 14 Feb | 0.0 | 10.1 | 0.0 | Humidity. High winds. | - | - |
| 13 Feb | 8.7 | 1.5 | 0.0 | Photometric. Very poor seeing. High winds. Poor data quality. | T | A T - |
| 12 Feb | 10.2 | 0.0 | 0.0 | Photometric. Good seeing. | T | A T - |
| 11 Feb | 9.4 | 0.8 | 0.0 | Non-photometric. Average seeing. Cloud before midnight. | T | A T - |
| 10 Feb | 10.2 | 0.0 | 0.0 | Non-photometric. Seeing average to poor. Intermittent thin cloud | T | A T - |
| 9 Feb | 10.3 | 0.0 | 0.0 | Non-photometric. Seeing good to average. | - | A - - |
| 8 Feb | 9.3 | 0.0 | 1.0 | Photometric, degrading later. Seeing good to average. Cassegrain startup delayed. | - | A - - |
| 7 Feb | 10.3 | 0.0 | 0.0 | Photometric. Seeing average to good. | T | A T - |
| 6 Feb | 9.6 | 0.0 | 0.7 | Non-photometric. Seeing average to good. Engineering tests at 21:30 for 0.7 hours | T | A T - |
| 5 Feb | 10.4 | 0.0 | 0.0 | Non-photometric. Average seeing. | - | A - - |
| 4 Feb | 10.4 | 0.0 | 0.0 | Non-photometric. Average/poor seeing. | - | A - - |
| 3 Feb | 10.4 | 0.0 | 0.0 | Non-photometric, average/poor seeing. | - | A - - |
| 2 Feb | 10.4 | 0.0 | 0.0 | Photometric, average seeing. | - | A - - |
| 1 Feb | 3.0 | 7.4 | 0.0 | Photometric, average seeing. High humidity. | - | A - - |
January 2019
| Date | Hours Used | Comment | SkyCam | |||
|---|---|---|---|---|---|---|
| Observing | Weather | Technical | ZP Plot | Movie | ||
| 31 Jan | 10.5 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 30 Jan | 10.5 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 29 Jan | 10.5 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 28 Jan | 10.6 | 0.0 | 0.0 | Photometric, average seeing. | T | A T - |
| 27 Jan | 10.6 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 26 Jan | 10.0 | 0.3 | 0.3 | Non-photometric, average seeing. | T | A T - |
| 25 Jan | 10.6 | 0.0 | 0.0 | Photometric, good/average seeing. | T | A T - |
| 24 Jan | 10.3 | 0.0 | 0.3 | Photometric, average/poor seeing. | T | A T - |
| 23 Jan | 10.6 | 0.0 | 0.0 | Non-photometric, average seeing. | T | A T - |
| 22 Jan | 10.6 | 0.0 | 0.0 | Photometric, poor seeing. | T | A T - |
| 21 Jan | 0.0 | 10.6 | 0.0 | High humidity, ice. | T | A T - |
| 20 Jan | 6.0 | 4.7 | 0.0 | High humidity. Average seeing, photometric. | T | A T - |
| 19 Jan | 9.7 | 0.0 | 1.0 | PLC Master Error, Altitude Errors. Good seeing, photometric. | T | A T - |
| 18 Jan | 0.0 | 10.7 | 0.0 | Ice on enclosure. | T | A T - |
| 17 Jan | 0.0 | 10.7 | 0.0 | High humidity and sub-zero temperatures. | T | A T - |
| 16 Jan | 0.0 | 10.7 | 0.0 | High humidity and sub-zero temperatures. | T | A T - |
| 15 Jan | 10.7 | 0.0 | 0.0 | Non-photometric with average/good seeing. | Z | A T Z |
| 14 Jan | 9.6 | 1.1 | 0.0 | Non-photometric with average seeing. High humidity at beginning of night. | Z | A T Z |
| 13 Jan | 10.7 | 0.0 | 0.0 | Non-photometric conditions. Average seeing. | Z | A T Z |
| 12 Jan | 10.7 | 0.0 | 0.0 | Non-photometric conditions. Average seeing. | Z | A T Z |
| 11 Jan | 10.6 | 0.0 | 0.1 | Photometric conditions. Average seeing. | Z | A T Z |
| 10 Jan | 10.3 | 0.0 | 0.5 | Photometric observing conditions with average seeing. | Z | A T Z |
| 9 Jan | 10.7 | 0.0 | 0.1 | Photometric observing conditions. Average seeing. | Z | A T Z |
| 8 Jan | 9.7 | 0.0 | 1.1 | Non-photometric with average seeing. | Z | A T Z |
| 7 Jan | 9.4 | 1.4 | 0.0 | Non-photmetric, average to poor seeing. High cloud at start of night. | Z | A T Z |
| 6 Jan | 2.4 | 8.0 | 0.4 | Non-photometric, average seeing. Fault with cassegrain axis and closure due to cloud. | Z | A T Z |
| 5 Jan | 10.4 | 0.0 | 0.4 | Non-photometric, good/average seeing. Fault with cassegrain axis. | Z | A T Z |
| 4 Jan | 10.8 | 0.0 | 0.0 | Photometric, average seeing. | Z | A T Z |
| 3 Jan | 10.8 | 0.0 | 0.0 | Non-photometric, average seeing. | Z | A T Z |
| 2 Jan | 10.4 | 0.0 | 0.4 | Non-photometric, average seeing. Fault with cassegrain axis. | Z | A T Z |
| 1 Jan | 10.5 | 0.0 | 0.4 | Non-photometric, good-average seeing. Fault with cassegrain axis. | Z | A T Z |
