List of Figures

• South-Eastern New South Wales
• The Coonabarabran area
• Siding Spring Observatory
• Average fraction of clear time per month
• Fraction of clear time per year for 1976-90
• AAT seeing measurements over a five-year period
• Location of the AAO Epping Lab and nearby accommodation
• The Sydney area
• Optical configurations for the AAT
• The telescope structure, viewed from the east and from the south
• The optical configurations and field sizes of the three existing prime focus correctors, drawn to the same scale. The figure of the aspheric plate has been exaggerated in this diagram.
• Spot diagrams for the doublet corrector, with the axes labelled in mm. Image quality is good well beyond the spectral range indicated here.
• Spot diagrams for the triplet corrector. Images are usable for guiding at all the wavelengths illustrated here, even at the edge of the 1 field.
• Prime focus camera: area covered by probes
• Prime focus camera mounting plate for special instruments
• Nominal optical data for Cassegrain foci
• Spot diagrams for Cassegrain foci. The bottom pair of images shows the effect of moving away from the nominal focus, as discussed in § 2.3.5.
• Cassegrain acquisition and guiding assembly
• Cassegrain A&G unit: vignetting of and by probes
• Cassegrain cage: underside view of the instrument support trusses
• Cassegrain cage: approximate dimensions (in mm)
• Plan of AAT coudé room 2 (coudé west)
• Range of attainable azimuth angles for coudé beam
• Spot diagrams for coudé focus
• Field rotation at coudé
• Hour angle limits for the AAT. Shaded areas mark the region where sources can be observed either above or below the pole.
• Parallactic angle
• The AAT building
• The Schmidt Telescope
• Optical system for the 2dF
• 2dF top end
• The RGO spectrograph
• UCLES optical path
• The Faint Object Red Spectrograph (FORS)
• Overall throughput of FORS as a function of wavelength
• CONFIGURE display for AUTOFIB
• IPCS: schematic diagram
• Detective quantum efficiency of a typical IPCS image tube
• Quantum efficiency of CCDs currently available at the AAT
• IRIS assembly
• IRIS optical configurations