2.7 m (107") Harlan J. Smith Telescope

harlan j. smith telescope

Memo to Observers

June 7, 2004 [pdf]

See:
Observing Support: 2.7 m Telescope

Instruments

Cassegrain f/8.8 Ritchey-Chretien focus

DIAFI

VIRUS-P

CCD WHT Camera

Imaging Grism Instrument (IGI)

Coudé f/32.5 focus

Robert G. Tull Coudé Spectrographs

Tull Spectrograph (TS1)

Two foci available

Cross-Dispersed Echelle Spectrograph (TS2)

Two foci available

TCS

107" TCS Manual

107" TCS Quick Start

107" TCS Troubleshooting

Optical

Primary Mirror
Diameter 2.72 m (107")
Focal length 10.68 m (35')
F-ratio 3.93
Cassegrain f/8.8
Ritchey-Chretien focus
Focal length 23.91 m (78.4')
F-ratio 8.8
Field of view 61.5 arcmin
Plate scale 8.62 arcsec/mm
Cassegrain f/17.7 focus
Focal length 47.98 m (157.4')
F-ratio 17.65
Field of view 31 arcmin
Plate scale 4.29 arcsec/mm
Coudé f/32.5 focus
Focal length 88.43 m (290.1')
F-ratio 32.54
Field of view 6 arcmin
Plate scale 2.32 arcsec/mm

Mechanical

Primary Mirror
Weight 3540 kg (7800 lbs)
Thickness 31.8 cm (12.5")
Material fused silica
Telescope Tube
Diameter 3.66 m (12')
Length 9.75 m (32')
Telescope
Weight 145 t (190 tons)
Bearings
Polar axis pressurized oil and radial thrust bearings
Dec axis preloaded ball bearings
Dome
Diameter 23 m (76')
Weight 200 t (220 tons)

Historical

Construction
Started April 1966
Completed October 1968
Contractor
Design Charles Jones, Inc.
Telescope Westinghouse
Dome C.H. Lovell Construction Co.
Optics Davidson Optronics

2.7 m (107") Harlan J. Smith Telescope

Cassegrain f/8.8 Ritchey-Chretien focus

IGRINS

DIAFI

GCMS (VIRUS-P)

VIRUS-W

Coudé f/32.5 focus

Robert G. Tull Coudé Spectrographs

Tull Spectrograph (TS1)

Cross-Dispersed Echelle Spectrograph (TS2)

2.7 m (107") Harlan J. Smith Telescope

Cassegrain f/8.8 Ritchey-Chretien focus

IGRINS

DIAFI

GCMS (VIRUS-P)

VIRUS-W

Coudé f/32.5 focus

Robert G. Tull Coudé Spectrographs

Tull Spectrograph (TS1)

Cross-Dispersed Echelle Spectrograph (TS2)

19 May 2016
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