more flexibility in trading facility instrument funds for telescope access. (See “On the National Science Foundation's Revised Facility Instrumentation Program,” June 2, 1999, provided to AURA and NSF.) This modified payback scheme would allow the NSF to more fairly recognize and award independent observatories for their successes in obtaining private and state funds for construction and operation.

TABLE 5.13 Optical/IR Telescopes of Aperture >5 Meters Currently Accessible to U.S. Astronomers or Under Construction

Name

% U.S.

Year

Aperture(m)

Capital Cost (millions of dollars)a

Instrumentation (millions of dollars)a

Keck I

100

1993

10

94

13.5

Keck II

100

1996

10

78

28.1

HET

90

1998

9

17

3.6

MMTb

100

2000

6.5

23

26

Gemini-Northc

52

1999

8

86

11.2

Gemini-Southc

42

2001

8

86

7.6

Magellan I

90

2000

6.5

38

9

Magellan II

90

2002

6.5

36

9

LBT

50

2002

2×8.4

77

13

SALT

12

2002

10

17

 

NOTE: Acronyms are defined in Appendix H.

a Costs are the total construction and current integrated instrumentation budgets, including the U.S. share.

b The MMT capital cost is for the conversion from 4.5-meter only.

c Gemini instrumentation costs are those included in the original capital construction budget. Gemini has a separate line for new instrumentation that is included in its annual operations budget.



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