Joint Astronomy Centre

JAC Home
JCMT
UKIRT
Contact info
JAC Divisions
OMP
Outreach
Seminars
Staff-only Wiki
Weather
Web Cameras

____________________

JCMT home

Observing at JCMT
OMP Observation Manager

Telescope
Spectral Line Observing
Continuum Observing

Schedule
Data Archive

Future Developments
Legacy Surveys
Newsletter & Publications

Weather and Fault Statistics for Semester 94A

Introduction

The following tables present the weather loss and fault loss for semester 94A. Full details are stored on database at the JAC and interested readers are referred there for further information.

Graeme Watt, ROE

Iain Coulson, JAC

Month Avail Extend Primary % Backup %

Hrs Hrs Loss Loss

February 448.0 12.6 165.5 36.9 6.0 1.3

March 496.0 41.7 163.5 33.0 1.5 0.3

April 449.0 27.6 40.3 9.0 0.0 0.0

May 488.0 22.8 58.0 11.9 0.0 0.0

June 480.0 36.3 68.0 14.2 0.0 0.0

July 496.0 28.9 180.8 36.4 12.0 2.4

Total 2857.0 169.9 676.1 23.7 19.5 0.7

Table 1: JCMT weather statistics for semester 94A.

Month Avail Total ANT INS COMP SOFT CAR OTH

February 448.0 24.4 5.3 11.7 0.3 7.0 0.0 0.1

March 496.0 2.6 0.0 1.5 0.0 0.0 0.0 1.1

April 449.0 8.3 1.2 3.3 0.0 0. 0.0 3.3

May 488.0 35.5 24.5 9.2 0.3 1.3 0.0 0.0

June 480.0 7.4 0.0 2.3 2.7 0.2 0.0 2.2

July 496.0 20.1 0.3 10.8 6.6 0.6 0.0 2.0

P(hrs) 2857.0 98.3 31.3 38.8 9.9 9.6 0.3 8.7

P(%) 4.5 3.4 1.1 1.4 0.3 0.3 0.0 0.3

B(hrs) 8.9 0.0 6.2 1.4 0.0 0.0 1.3

Table 2: JCMT fault statistics for semester 94A. Wherever possible the faults are categorised into ANT = antenna; INS = instrument; COMP = computer hardware; SOFT = software; CAR = carousel; with the remainder going to OTH = other. The figures in the table may not appear to add up correctly due to rounding in the original program. P defines the time lost from Primary projects. The category B is the time lost to Backup projects. The total clear time lost (including backup time) for semester 94A is 4.5%.

Contact: Jonathan Kemp. Updated: Tue Aug 17 17:32:12 HST 2004

Return to top ^