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Night Reports 2010

Observing: 53.5 hours
Weather Loss: 239.9 hours
Technical Loss: 33.1 hours
Scheduled Maintenance: 0.0 hours

December 2010

DateHours UsedComment
ObservingWeatherTechnical
31 Dec10.90.00.0Non-photometric.
30 Dec0.010.90.0High humidity.
29 Dec0.010.90.0High humidity.
28 Dec0.010.90.0High humidity.
27 Dec10.90.00.0Non-photometric.
26 Dec0.00.010.9ALT node failure.
25 Dec0.00.010.9ALT node failure.
24 Dec1.59.00.4Photometric. High humidity. AMN reboot.
23 Dec10.90.00.0Non-photometric.
22 Dec10.90.00.0Photometric.
21 Dec0.010.90.0High humidity and rain.
20 Dec0.010.90.0High humidity and rain.
19 Dec0.010.90.0High humidity and rain.
18 Dec0.010.90.0High humidity and rain.
17 Dec0.010.90.0High humidity, wind and rain.
16 Dec0.010.90.0High humidity, wind and rain.
15 Dec0.010.90.0High humidity, wind and rain.
14 Dec7.43.50.0Non-photometric. Thick cloud and high winds. Poor seeing.
13 Dec0.00.010.9ALT node failure.
12 Dec0.010.90.0Risk of ice.
11 Dec0.010.90.0High humidity, risk of ice.
10 Dec0.010.90.0High humidity, rain.
9 Dec0.010.90.0High humidity, rain.
8 Dec0.010.90.0High humidity, rain.
7 Dec0.010.90.0High humidity, rain.
6 Dec0.010.80.0High humidity, rain.
5 Dec0.010.80.0High humidity, rain.
4 Dec0.010.80.0High humidity, high winds.
3 Dec0.010.80.0Thick cloud, high humidity.
2 Dec1.09.80.0Non-photometric. Thick cloud.
1 Dec0.00.00.0Scheduled Maintenance.

November 2010

Observing: 200.0 hours
Weather Loss: 102.0 hours
Technical Loss: 5.4 hours
Scheduled Maintenance: 10.4 hours

DateHours UsedComment
ObservingWeatherTechnical
30 Nov9.80.01.0Photometric. FRODOspec problem.
29 Nov0.010.70.0High humidity, winds.
28 Nov0.010.70.0High humidity, winds & rain.
27 Nov0.010.70.0High humidity, winds & rain; risk of ice.
26 Nov0.010.70.0High humidity, winds & rain; risk of ice.
25 Nov0.010.70.0High humidity, winds & rain.
24 Nov2.97.80.0Non-photometric, poor seeing. High humidity after three hours for rest of night.
23 Nov10.70.00.0Non-photometric.
22 Nov10.70.00.0Non-photometric.
21 Nov10.70.00.0Non-photometric.
20 Nov8.62.00.0Non-phtometric. Thick cloud.
19 Nov4.26.00.4Non-photometric. High humidty. AZ node reboot.
18 Nov7.23.40.0Non-photometric. High humidity.
17 Nov10.60.00.0Non-photometric.
16 Nov10.60.00.0Non-photometric.
15 Nov9.61.00.0High humidity at start of night.
14 Nov0.010.60.0Thick cloud and high humidity.
13 Nov7.23.00.4Photometric. High humidity at start. AZ node reboot.
12 Nov10.50.00.0Photometric.
11 Nov5.74.80.0Non-photometric? Wetness at start and end.
10 Nov10.50.00.0Non-photometric.
9 Nov10.50.00.0Photometric.
8 Nov0.00.00.0Scheduled Maintenance.
7 Nov3.56.90.0Photometric. High humidity first half of night.
6 Nov10.40.00.0Photometric.
5 Nov10.40.00.0Photometric.
4 Nov9.90.01.4Photometric; poor seeing. RCS fault. Az node reboot.
3 Nov7.43.00.0Non-photometric; occasional patchy thick cloud & high winds.
2 Nov8.10.02.2Network loss during manual engineering. RCS fault. Non-photometric.
1 Nov10.30.00.0 

October 2010

Observing: 189.9 hours
Weather Loss: 119.1 hours
Technical Loss: 1.1 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
31 Oct4.26.00.0Photometric. High humidity and thick cloud later.
30 Oct10.20.00.0Non-photometric.
29 Oct10.20.00.0Non-photometric.
28 Oct10.20.00.0Non-photometric.
27 Oct10.20.00.0Photometric
26 Oct10.20.00.0Non-photometric.
25 Oct10.13.00.0Non-photometric, High humidity for a period.
24 Oct5.34.70.0Non-photometric, High humidity.
23 Oct0.010.10.0High Humidity.
22 Oct9.70.30.1Non-photometric, High humidity. TCS reboot.
21 Oct1.78.40.0Non-photometric, High humidity.
20 Oct3.86.00.2Non-photometric, High humidity, AZM node reboot.
19 Oct0.010.00.0High humidity.
18 Oct5.84.20.0Non-photometric, High humidity and thick cloud.
17 Oct3.26.70.0Non-photometric, thick cloud.
16 Oct9.90.00.0Photometric
15 Oct3.46.00.5Non-photometric. High humidity & OMC node reboot.
14 Oct4.25.70.0Non-photometric. High humidity at times.
13 Oct5.54.30.0Non-photometric. High humidity first half of night.
12 Oct9.80.00.0Photometric
11 Oct0.09.80.0High humidity and rain.
10 Oct4.75.00.0Non-photometric, high humidity.
9 Oct9.70.00.0Non-photometric.
8 Oct5.14.60.0Non-photometric. High humidity and winds.
7 Oct1.48.30.0Non-photometric. High humidity and winds.
6 Oct4.05.70.0Non-photometric. High humidity 2nd half of night.
5 Oct9.00.70.0Photometric. High humidity at end of night.
4 Oct9.30.00.3Non-photometric? CAS node reboot.
3 Oct9.60.00.0Non-photometric.
2 Oct0.09.60.0Cloud & High humidity.
1 Oct9.50.00.0Photometric?

September 2010

Observing: 143.2 hours
Weather Loss: 69.3 hours
Technical Loss: 3.2 hours
Scheduled Maintenance: 55.6 hours

DateHours UsedComment
ObservingWeatherTechnical
30 Sep9.50.00.0Photometric.
29 Sep4.25.30.0Non-photometric. High humidity at times.
28 Sep5.63.80.0Non-photometric. High humidity at times.
27 Sep0.00.00.0Scheduled maintenance.
26 Sep0.00.00.0Scheduled maintenance.
25 Sep0.00.00.0Scheduled maintenance.
24 Sep0.00.00.0Scheduled maintenance.
23 Sep0.09.30.0High humidity all night.
22 Sep0.09.20.0High humidity all night.
21 Sep0.09.20.0Thick cloud.
20 Sep8.60.00.6Non-photometric. AZM node reboot.
19 Sep8.70.00.5Non-photometric. 2 x ALT node reboot.
18 Sep0.09.10.0High humidity.
17 Sep5.63.50.0Non-photometric. High humidity at end of night.
16 Sep0.00.00.0Scheduled Maintenance (primary mirror wash).
15 Sep0.00.00.0Scheduled Maintenance (primary mirror wash).
14 Sep0.09.00.0Cloud and rain.
13 Sep5.82.90.3Non-photometric. Cas node reboot. Cloud and high humidity later.
12 Sep8.90.00.0Non-photometric.
11 Sep8.50.00.4Photometric. Amn node reboot.
10 Sep8.60.00.3Photometric. Alt node reboot.
9 Sep8.50.00.3Photometric. Alt node reboot.
8 Sep8.80.00.0Photometric.
7 Sep8.80.00.0Photometric.
6 Sep5.73.00.0Non-photometric. Thick cloud at times.
5 Sep3.75.00.0Non-photometric. Thick cloud at times.
4 Sep8.70.00.0Photometric.
3 Sep8.60.00.0Photometric.
2 Sep8.20.00.4Photometric. Alt node reboot.
1 Sep8.20.00.4Photometric. Alt node reboot.

August 2010

Observing: 226.8 hours
Weather Loss: 18.1 hours
Technical Loss: 4.7 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
31 Aug8.50.00.0Photometric?
30 Aug8.20.00.3Photometric? Alt Node reboot.
29 Aug7.90.00.6Photometric. Alt Node reboot x 2.
28 Aug8.10.00.3Photometric. Az Node reboot.
27 Aug8.40.00.0Photometric.
26 Aug8.40.00.0Non-photometric. ALt Node reboot.
25 Aug8.00.00.3Photometric, Cas Node reboot.
24 Aug7.60.00.7Photometric. Aux Mech reboot.
23 Aug7.90.00.3Photometric. Az ENL Apply Error, Az Node reboot.
22 Aug7.90.00.3Photometric. Alt Node reboot.
21 Aug7.90.00.3Photometric. Alt Node reboot x 2.
20 Aug8.20.00.0Photometric.
19 Aug8.20.00.0Photometric.
18 Aug8.10.00.0Photometric.
17 Aug7.50.00.6Photometric. AMN and Alt node reboot.
16 Aug8.10.00.0Non-photometric.
15 Aug5.92.20.0Non-photometric; thick cloud & high humidity.
14 Aug8.00.00.0Photometric.
13 Aug0.08.00.0High winds.
12 Aug7.30.00.6Photometric. High winds before dawn. Enclosure light activated accidentally by wind-blown equipment near light switch at 23:14UT: data affected to varying degrees.
11 Aug7.90.00.0Photometric, but some cloud in second half of night.
10 Aug0.07.90.0Cloud.
9 Aug7.80.00.0Photometric.
8 Aug7.80.00.0Photometric.
7 Aug7.40.00.4Photometric. AZ node reboot.
6 Aug7.70.00.0Photometric.
5 Aug7.70.00.0Non-photometric.
4 Aug7.60.00.0Non-photometric. Autoguider offline.
3 Aug7.60.00.0Non-photometric.
2 Aug7.60.00.0Photometric.
1 Aug7.60.00.0Photometric.

July 2010

Observing: 194.2 hours
Weather Loss: 22.1 hours
Technical Loss: 7.4 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
31 Jul7.10.00.5Non-photometric, Alt node reboot.
30 Jul0.07.50.0Calima
29 Jul0.07.50.0Calima
28 Jul7.40.00.0Photometric.
27 Jul7.40.00.0Photometric.
26 Jul7.40.00.0Photometric.
25 Jul7.40.00.0Photometric.
24 Jul7.40.00.3Photometric. Alt node reboot.
23 Jul7.30.00.0Photometric. Az Apply Error, rebooted.
22 Jul7.30.00.3Photometric. Alt node reboot.
21 Jul7.00.00.3Non-photometric. Alt node reboot
20 Jul7.30.00.0Photometric
19 Jul7.20.00.0Non-photometric
18 Jul6.90.00.3Photometric. Alt node reboot
17 Jul7.20.00.0Photometric.
16 Jul6.90.00.3Photometric. Az node reboot.
15 Jul7.10.00.0Photometric. RATCam control computer went offline 22:30UT, also affecting FRODOSpec. Other instruments carried on as normal.
14 Jul7.10.00.0Photometric.
13 Jul7.10.00.0Non-photometric.
12 Jul6.70.00.4Non-photometric. Alt node reboot.
11 Jul2.10.05.0Non-photometric. Autoguider cooling failure.
10 Jul0.07.10.0Calima.
9 Jul7.00.00.0Non-photometric.
8 Jul7.00.00.0Photometric.
7 Jul7.00.00.0Photometric.
6 Jul7.00.00.0Photometric.
5 Jul7.00.00.0Photometric.
4 Jul7.00.00.0Photometric.
3 Jul7.00.00.0Non-photometric.
2 Jul7.00.00.0Photometric.
1 Jul6.90.00.0Photometric.

June 2010

Observing: 176.0 hours
Weather Loss: 27.5 hours
Technical Loss: 3.9 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
30 Jun6.90.00.0Photometric.
29 Jun6.70.00.2Photometric; Alt node reboot.
28 Jun6.60.00.3Photometric, Azm node reboot.
27 Jun6.90.00.0Photometric
26 Jun6.70.00.2Photometric, SCC reboot at start of night.
25 Jun6.90.00.0Photometric.
24 Jun6.60.00.3Photometric, Alt node reboot.
23 Jun6.50.00.4Photometric, Alt node reboot.
22 Jun6.50.00.4Photometric. Amn node reboot.
21 Jun6.50.00.4Photometric.
20 Jun6.80.00.0Photometric.
19 Jun6.80.00.0Photometric.
18 Jun6.50.00.3Photometric. Alt node reboot.
17 Jun6.90.00.0Photometric. Alt node reboot at start of night.
16 Jun6.90.00.0Photometric. Alt node reboot at start of night.
15 Jun6.90.00.0Photometric.
14 Jun6.60.00.3Photometric. Alt node reboot.
13 Jun6.90.00.0Photometric.
12 Jun6.60.00.3Photometric. Alt node reboot.
11 Jun6.90.00.0Photometric.
10 Jun6.50.00.4Photometric. ALT node reboot.
9 Jun3.63.30.0Photometric. High humdity.
8 Jun6.50.00.4Photometric. ALT node reboot.
7 Jun7.00.00.0Photometric.
6 Jun7.00.00.0Photometric. RATCam offline, other instruments not relying on RATCam OK
5 Jun7.00.00.0Photometric
4 Jun0.07.00.0Calima
3 Jun0.07.00.0Calima
2 Jun3.83.20.0Calima first half of night, observing non-photometric after midnight.
1 Jun0.07.00.0Calima

May 2010

Observing: 160.8 hours
Weather Loss: 65.4 hours
Technical Loss: 4.7 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
31 May0.07.10.0Calima.
30 May7.10.00.0Photometric.
29 May7.00.00.1Spectroscopic, minor AZM problem.
28 May3.63.50.0Spectroscopic, thick cloud later.
27 May6.70.00.4Photometric, AMN node reboot.
26 May7.20.00.0Photometric.
25 May6.90.00.3Photometric, ALT node reboot.
24 May7.30.00.0Non-photometric.
23 May7.30.00.0Photometric.
22 May5.00.02.3Devicenet Error. Photometric.
21 May7.30.00.0Photometric.
20 May7.30.00.0Photometric.
19 May7.30.00.0Photometric.
18 May7.00.00.4Photometric. AZ node reboot.
17 May7.40.00.0Photometric.
16 May7.40.00.0Photometric.
15 May1.75.70.0Photometric; high humidity
14 May6.70.00.8Photometric; Alt node reboots
13 May0.07.50.0High humidity, ice
12 May0.07.50.0High humidity
11 May0.07.60.0High humidity, ice
10 May0.07.60.0High humidity.
9 May0.07.60.0High humidity.
8 May1.46.20.0Photometric? High humidty at times.
7 May6.41.30.0Non-photometric. Thick cloud at times.
6 May3.53.80.4Photometric. High humidity. AZ node reboot.
5 May7.80.00.0Photometric.
4 May7.80.00.0Non-photometric.
3 May7.90.00.0Non-photometric.
2 May7.90.00.0Photometric.
1 May7.90.00.0Non-photometric.

April 2010

Observing: 119.0 hours
Weather Loss: 122.7 hours
Technical Loss: 9.8 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
30 Apr0.07.90.0Calima.
29 Apr0.08.00.0Calima.
28 Apr8.00.00.0Non-photometric. Pointing model first part of night.
27 Apr7.30.00.7Non-photometric. Thick cloud at start of night.
26 Apr7.00.01.0Non-photometric. RCS problem.
25 Apr8.10.00.0Non-photometric.
24 Apr8.10.00.0Non-photometric.
23 Apr3.64.50.0Non-photometric. Thick cloud at times.
22 Apr7.70.00.4Photometric. ALT node reboot.
21 Apr7.70.00.4Non-photometric. ALT node reboot.
20 Apr0.03.15.1High winds & humidity; scheduler fault
19 Apr0.08.20.0High humidity
18 Apr0.08.20.0Overcast all night.
17 Apr0.08.30.0Ice on enclosure; no observing
16 Apr0.08.40.0High humidity, high winds, snow & ice.
15 Apr0.08.40.0High humidity, high winds, snow & ice.
14 Apr0.08.50.0High humidity, high winds, snow & ice.
13 Apr0.08.50.0High humidity & winds.
12 Apr0.08.60.0High humidity.
11 Apr6.61.60.4Photometric. AMN node reboot. High humidity.
10 Apr8.20.00.4Photometric. AMN node reboot
9 Apr8.60.00.0Non-photometric.
8 Apr2.66.00.0Non-photometric.
7 Apr1.86.90.0High cloud
6 Apr8.60.00.1ALT node reboot. Non-photometric.
5 Apr8.50.00.3CAS node reboot. Non-photometric.
4 Apr8.30.00.5ALT node reboot.
3 Apr0.08.80.0High Humidity.
2 Apr8.30.00.5Network problems caused by RINGO2.Non-photometric, poor seeing
1 Apr0.08.80.0Thick High Cloud

March 2010

Observing: 133.5 hours
Weather Loss: 59.1 hours
Technical Loss: 49.3 hours
Scheduled Maintenance: 48.3 hours

DateHours UsedComment
ObservingWeatherTechnical
31 Mar8.60.00.3Non-photometric. Alt node reboot
30 Mar8.90.00.0Non-photometric.
29 Mar9.00.00.0Photometric.
28 Mar9.00.00.0Non-photometric.
27 Mar9.10.00.0Non-photometric.
26 Mar7.80.00.6Non-photometric. Alt node reboot plus 0.7h scheduled RISE testing.
25 Mar9.10.00.0Non-photometric.
24 Mar9.20.00.0Photometric.
23 Mar8.10.00.0Non-photometric. 1.1 hours scheduled maintenance on cassegrain axis.
22 Mar8.90.00.3Non-photometric. Primary mirror cover problem.
21 Mar9.20.00.0Non-photometric.
20 Mar9.30.00.0Photometric.
19 Mar0.00.00.0Scheduled Maintenance.
18 Mar0.00.00.0Scheduled Maintenance.
17 Mar0.00.00.0Scheduled Maintenance.
16 Mar0.00.00.0Scheduled Maintenance.
15 Mar0.00.00.0Scheduled Maintenance.
14 Mar0.00.09.4Altitude computer fault.
13 Mar0.00.09.4Altitude computer fault.
12 Mar9.40.00.0Non-photometric.
11 Mar0.00.09.5Altitude control computer fault
10 Mar0.00.09.5Altitude control computer fault
9 Mar0.00.09.6Altitude control computer fault
8 Mar8.10.80.7Non-photometric. Brief rain. RCS fault.
7 Mar0.09.60.0High humidity, wind.
6 Mar0.09.70.0High humidity, wind.
5 Mar0.09.70.0High humidity, wimd.
4 Mar0.09.70.0High humidity & winds.
3 Mar9.80.00.0Non-Photometric.
2 Mar0.09.80.0High humidity & winds.
1 Mar0.09.80.0High humidity & winds.

February 2010

Observing: 105.4 hours
Weather Loss: 165.2 hours
Technical Loss: 13.2 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
28 Feb0.09.80.0High humidity & ice.
27 Feb0.09.80.0High winds, humidity & ice risk.
26 Feb0.09.90.0High winds & humidity.
25 Feb4.95.00.0Non-photometric. Poor seeing. High winds.
24 Feb4.92.42.6Non-photometric. AMN failure - manual reboot required. High humidity.
23 Feb9.01.00.0Non-photometric. High humidity.
22 Feb0.010.00.0High winds & humidity.
21 Feb0.010.00.0High winds & humidity.
20 Feb0.010.00.0High winds & humidity.
19 Feb0.010.00.0High winds & hunidity; snow and ice.
18 Feb0.010.10.0High winds & hunidity; snow and ice.
17 Feb0.010.10.0High winds, snow and ice.
16 Feb0.010.10.0High humidity & rain.
15 Feb0.010.10.0High humidity, rain & ice.
14 Feb0.010.10.0High humidity, rain & ice.
13 Feb0.07.13.1Non-photometric. Science fold mirror software problem. High humidity.
12 Feb5.20.05.0Non-photometric. Robotic control system problem.
11 Feb8.10.02.1Non-photometric; very cloudy most of the time. Software deployment problem at start of night.
10 Feb10.20.00.0Non-photometric. Patchy cloud after ~3hUT.
9 Feb10.30.00.0Non-photometric. SupIRCam control computer locked up (all other instruments okay).
8 Feb10.30.00.0Non-photometric.
7 Feb1.48.90.0Thick cloud at start of night. Non-photometric. High humidity.
6 Feb10.30.00.0Non-photometric.
5 Feb10.40.00.0Non-photometric.
4 Feb10.00.00.4Non-photometric. AMN node reboot.
3 Feb10.40.00.0Photometric.
2 Feb0.010.40.0High winds
1 Feb0.010.40.0High winds / high humidity.

January 2010

Observing: 196.9 hours
Weather Loss: 133.9 hours
Technical Loss: 0.6 hours
Scheduled Maintenance: 0.0 hours

DateHours UsedComment
ObservingWeatherTechnical
31 Jan0.010.50.0High humidity.
30 Jan0.010.50.0High humidity.
29 Jan0.010.50.0High humidity.
28 Jan0.010.60.0Thick clould, high humidity.
27 Jan9.01.60.0Non-photometric. High humidity.
26 Jan2.87.80.0Photometric. High humidity.
25 Jan10.60.00.0Photometric.
24 Jan10.60.00.0Photometric.
23 Jan10.60.00.0Photometric.
22 Jan4.46.20.0Non-photometric. High humidity.
21 Jan10.60.00.0Non-photometric; windy.
20 Jan10.70.00.0Non-photometric.
19 Jan10.70.00.0Photometric.
18 Jan10.70.00.0Non-photometric.
17 Jan10.70.00.0Photometric; poor seeing.
16 Jan8.12.40.2Photometric; high winds, altitude node reboot.
15 Jan10.70.00.0Non-photometric.
14 Jan10.30.00.4Non-photometric; cassegrain node reboot.
13 Jan10.70.00.0Non-photometric.
12 Jan10.70.00.0Non-photometric.
11 Jan10.70.00.0Non-photometric.
10 Jan10.80.00.0Photometric.
9 Jan0.010.80.0High humidity.
8 Jan0.010.80.0High humidity.
7 Jan9.51.30.0Non-phtometric. High humidity.
6 Jan0.010.80.0High humidity.
5 Jan0.010.80.0High humidity.
4 Jan6.84.00.0Photometric. High humidity.
3 Jan2.08.80.0Non-photometric. High humidity.
2 Jan1.59.30.0Non-photometric. High humidity.
1 Jan3.77.20.0Photometric. High winds.