Use of Observing Time and Scientific Productivity

• Technical Note No. 129, "ING Bibliography 2000-2001".
• Technical Note No. 124, "ING Bibliography 1999"
• Technical Note No. 121, "ING Bibliography 1998"
• Technical Note No. 112, "ING Bibliography 1997"
• Technical Note No. 109, "ING Bibliography 1996"
• Technical Note No. 101, "ING Bibliography 1995"
• Technical Note No. 97, "ING Bibliography 1994"
• Technical Note No. 94, "ING Bibliography 1993"
• Technical Note No. 89, "ING Bibliography 1992"
• Technical Note No. 83, "ING Bibliography 1991"
• Technical Note No. 80, "ING Bibliography 1990"
• Technical Note No. 77, "ING Bibliography 1989"
• Technical Note No. 66, "ING Bibliography 1988"
• Technical Note No. 62, "ING Bibliography 1984-87"

Paper selections

• Papers using data obtained with the ING Service Programme.
• List of Nature and Science papers.

Cumulative number of research papers based on ING data published in journals Nature and Science per year. [ PNG | TIFF ]

Analysis

Paper counts

Number of refereed published papers per year from every telescope's first light. [ PNG | TIFF ]

Cumulative number of refereed published papers per year and telescope. [ PNG | TIFF ]

Use of observing time and scientific productivity

• 2006-2007
• 2004-2005
• 2002-2003
• 2000-2001
• 1999
• 1998 (telescope performance only)

WHT only data:

• WHT publications and oversubscription statistics (1992-...).

Telescope Performance

Technical downtime per semester. [ PNG | TIFF ]

Weather downtime:

Weather downtime per year. [ PNG | TIFF ]

Monthly weather downtime:

WHT's monthly weather downtime 1989-2010. [ PNG | TIFF ]

Number of proposals and oversubscription rates

WHT number of proposal per community. [ PNG | TIFF ]

Number of INT proposals:

INT number of proposal per community. [ PNG | TIFF ]

WHT oversubscription factors:

WHT oversubscription factors (time demand divided by time available) per community and semester. [ PNG | TIFF ]

INT oversubscription factors:

INT oversubscription factors (time demand divided by time available) per community and semester. [ PNG | TIFF ]

Telescope time allocation and paper authorship

WHT's allocated nights. UK PATT: United Kingdom's Panel for the Allocation of Telescope Time; NL PC: Netherlands' Programme Committee; SP CAT: Spain's Comité de Asignación de Tiempos; ITP: International Time Programme; GT: Instrument Builders’ Guaranteed Time; TNG share: Time share programme with Telescopio Nazionale Galileo; S: Service time, including UK, NL and SP service allocations; D: Discretionary time, used for major maintenance activities, enhancements, calibration, quality control tests, etc., and partly for astronomy, for example, as compensation for breakdowns or for observations of targets of opportunity; Comm: Commissioning instrument time; Std: Standown; DDT: Director's Discretionary Time; SP SAT: Spanish Additional Time. SP CAT includes CAT DDT and SP SAT time. Override and target-of-opportunity telescope time allocations are excluded. [ PNG | TIFF ] [ PNG | TIFF ]

INT nights per type of allocation:

INT's allocated nights. UK PATT: United Kingdom's Panel for the Allocation of Telescope Time; NL PC: Netherlands' Programme Committee; SP CAT: Spain's Comité de Asignación de Tiempos; ITP: International Time Programme; S: Service time, including UK, NL and SP service allocations; D: Discretionary time, used for major maintenance activities, enhancements, calibration, quality control tests, etc., and partly for astronomy, for example, as compensation for breakdowns or for observations of targets of opportunity; Comm: Commissioning instrument time; Std: Standown; DDT: Director's Discretionary Time; SP SAT: Spanish Additional Time; INO: Iranian National Observatory´s telescope time. SP CAT includes: CAT DDT, SP SAT, and from 2004, CAT Service as well. Override and target-of-opportunity telescope time allocations are excluded. [ PNG | TIFF ] [ PNG | TIFF ]

Paper authorship per nationality:

Instrument time allocation and paper use

Allocated nights per instrument on the WHT. Only science nights are considered. All private includes INTEGRAL. INGRID refers to when it was used without adaptive optics. NAOMI includes all adaptive-optics observations. Other ING includes AUX. [ PNG | TIFF ]

WHT papers per instrument:

Use of instrument data in WHT's refereed papers (papers are counted as many times as used instruments). All private includes INTEGRAL. Archives means papers that use data retrieved from the ING Archive, and not included in the other categories. INGRID refers to when it was used without adaptive optics. NAOMI includes INGRID, OASIS and OSCA in combination with adaptive optics. [ PNG | TIFF ]

Same as above, but excluding the archival papers and those from other ING's instruments listed individually. [ PNG | TIFF ]

INT nights per instrument:

Allocated nights per instrument on the INT. Only science nights are considered. Service nights are excluded. [ PNG | TIFF ]

INT papers per instrument:

Use of instrument data in INT's refereed papers (papers are counted as many times as used instruments). The archival papers mostly use data from the WFC. All private includes the private instruments. Other ING includes other common-user instruments not listed individually. [ PNG | TIFF ]

ING archive requests:

All data taken with the ING telescopes is archived in the UK, at the Institute of Astronomy, Cambridge. The data archive is managed by the Cambridge Astronomy Survey Unit. The total amount of (compressed) data stored has passed the 26 Tb mark. Archival data from the ING telescopes is made available to anyone upon request, after a one-year proprietary period. [ PNG | TIFF ]

User feedback

WHT and INT user satisfaction rating 1999-2007 (weather corrected). Users of ING facilities leave with a positive impression of their experience; 88% rate their level of satisfaction as either ‘good’ or ‘excellent’. [ PNG | TIFF ]

Comparison with other telescopes

• Scientific impact of large telescopes 1991-1998.

  Number of Nature papers generated 1989-98 by ground-based optical telescopes with mirror diameter >3.5m (for comparison, figures for the 2.5-m INT and Nordic Optical Telescope are also included). [ JPEG | TIFF ]

• The WHT one of the most scientifically productive telescopes in the world: C Benn and S Sánchez, 2001, "Scientific Impact of Large Telescopes", ING Newsl, 4, 15.