2.1 m (82") Otto Struve Telescope

See:
Observing Support: 2.1 m Telescope

Instruments

Prime f/3.9 focus

Argos

Cassegrain f/13.7 focus

Sandiford Cass Echelle Spectrometer (SES)

Cassegrain Spectrometer (es2)

CCD WHT Camera

Imaging Grism Instrument (IGI)

CQUEAN

Optical

Primary Mirror

Diameter

2.08 m (82")

Focal length

8.13 m (26.7')

F-ratio

3.90

Field angle

63.5 arcmin

Plate scale

25.4 arcsec/min

Cassegrain f/13.7 focus

Focal length

28.53 m (96.6')

F-ratio

13.65

Field angle

20 arcmin

Plate scale

7.25 arcsec/mm

Coudé focus - not presently in use

Focal length

47.70 m (156.5')

F-ratio

22.9

Plate scale

4.3 arcsec/mm

Mechanical

Primary Mirror

Weight

1900 kg (4200 lbs)

Thickness

29.8 cm (11.75")

Material

pyrex

Telescope Tube

Diameter

2.64 m (8'8")

Length

8.2 m (27')

Telescope

Weight

41 t (45 tons)

Bearings

Polar axis

ball radial thrust bearings

Dec axis

taped roller bearings

Dome

Diameter

19 m (62')

Weight

104 t (115 tons)

Historical

Construction

Started

1933

Completed

1939

Contractor

Design

Otto Struve

Telescope

Warner and Swasey Co.

Dome

Patterson Leitch Co.

Optics

C. Lundin

2.1 m (82") Otto Struve Telescope

Prime f/3.9 focus

Argos

Cassegrain f/13.7 focus

Sandiford Cass Echelle Spectrometer (SES)

Cassegrain Spectrometer (es2)

CCD WHT Camera

Imaging Grism Instrument (IGI)

CQUEAN