Coudé f/32.5 focus

Robert G. Tull Coudé Spectrograph

Tull Spectrograph (TS1)

Scientist

Dr. Phillip MacQueen
(512) 471-1470

pjm@astro.as.utexas.edu

Two separate foci are available

TS11 (6-foot camera) — A moderate-to high-resolution spectrometer which can be used with TK4 as the detector. Maximum resolving power is about 200,000. The plate scale is 10 arcsec/mm (0.24 arcsec/pixel with TK4). Five gratings and two echelles are available for a variety of resolutions. Noiseless co-addition on-chip is available for lower spectral and spatial resolutions. Autoguiding is available.

TS12 (Long focus camera) — A moderate to very-high resolution spectrometer has been used with TK4 CCD as the detector. The maximum demonstrated resolving power is 400,000. The plate scale is 2.3 arcsec/mm. Five gratings and two echelles are available to provide a variety of resolutions and wavelength coverage from 0.3 to 1.2 microns. Noiseless co-addition on-chip is available for lower spectral and spatial resolutions. Autoguiding is available.

2.7 m (107") Harlan J. Smith Telescope

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)

Cross-Dispersed Echelle Spectrograph (TS2)