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\contentsline {figure}{\numberline {1.1}{\ignorespaces Schematic of 2dF, Corrector, and ADC}}{9}
\contentsline {figure}{\numberline {1.2}{\ignorespaces Labelled picture of 2dF on the telescope.}}{10}
\contentsline {figure}{\numberline {1.3}{\ignorespaces Schematic diagram of the 2dF Prime Focus corrector in cross-section. The lower two lens elements are the prismatic doublets making up the ADC; these are the first and second elements of the corrector in the light path.}}{11}
\contentsline {figure}{\numberline {1.4}{\ignorespaces Wavelength Dependence of Radial Distortion}}{12}
\contentsline {figure}{\numberline {1.5}{\ignorespaces Showing how FPI star images look for nulled, correct, and incorrect ADC settings. These images were taken with a non-standard BG1 (UV+near-IR passband) filter, which blocks the V band light.}}{13}
\contentsline {figure}{\numberline {1.6}{\ignorespaces 2dF Robot Positioner}}{14}
\contentsline {figure}{\numberline {1.7}{\ignorespaces General arrangement of tumbler unit, fieldplates and fibre retractors. Drawing not to scale; only one of 40 retractor units shown on each fieldplate for clarity.}}{15}
\contentsline {figure}{\numberline {1.8}{\ignorespaces 2dF Field Plate}}{16}
\contentsline {figure}{\numberline {1.9}{\ignorespaces Variation of Fibre Diameter with Field Radius}}{17}
\contentsline {figure}{\numberline {1.10}{\ignorespaces Diagram showing the 2dF button, and the gripper jaws. The 2dF buttons are 4mm long (1 arcmin on the sky), and 2 mm wide.}}{18}
\contentsline {figure}{\numberline {1.11}{\ignorespaces Picture of Fibres on the Fieldplate}}{19}
\contentsline {figure}{\numberline {1.12}{\ignorespaces Closeup of Fibres on the Fieldplate}}{20}
\contentsline {figure}{\numberline {1.13}{\ignorespaces Guide Bundle Layout}}{21}
\contentsline {figure}{\numberline {1.14}{\ignorespaces Spectrograph optical layout}}{22}
\contentsline {figure}{\numberline {1.15}{\ignorespaces Picture of 2dF Spectrographs}}{23}
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\contentsline {figure}{\numberline {2.1}{\ignorespaces 2df Computer Systems}}{26}
\contentsline {figure}{\numberline {2.2}{\ignorespaces Simplified Diagram of 2dF Software Structure}}{27}
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\contentsline {figure}{\numberline {5.1}{\ignorespaces Configuration Main Window after Fibre Allocation}}{37}
\contentsline {figure}{\numberline {5.2}{\ignorespaces Allocation Parameters Dialog Box}}{40}
\contentsline {figure}{\numberline {5.3}{\ignorespaces The Configuration Graphical Display, with a sample configuration.}}{43}
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\contentsline {figure}{\numberline {6.1}{\ignorespaces The Control Task Main Window - An individual control window for each of the six subsystems can be brought up by clicking on the {\bf more} buttons}}{48}
\contentsline {figure}{\numberline {6.2}{\ignorespaces The Positioner Control window --- This is obtained by clicking on the {\bf more} button in the Positioner section of the main Control Task. window}}{49}
\contentsline {figure}{\numberline {6.3}{\ignorespaces The Telescope Control window --- This is obtained by clicking on the {\bf more} button in the Telescope section of the main Control Task window}}{50}
\contentsline {figure}{\numberline {6.4}{\ignorespaces The CCD Control window --- This is obtained by clicking on the {\bf more} button in the CCD section of the main Control Task window}}{51}
\contentsline {figure}{\numberline {6.5}{\ignorespaces The ADC Control Window -- This is obtained by clicking on the {\bf more} button in the ADC section of the main Control Task window}}{53}
\contentsline {figure}{\numberline {6.6}{\ignorespaces The Spectrograph Control window --- This is obtained by clicking on the {\bf more} button in the Spectrograph section of the main Control Task window}}{54}
\contentsline {figure}{\numberline {6.7}{\ignorespaces The FPI control task window --- used for imaging stars in the focal plane of 2dF}}{55}
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\contentsline {figure}{\numberline {8.1}{\ignorespaces The 2dF data reduction system main window}}{73}
\contentsline {figure}{\numberline {8.2}{\ignorespaces Typical result from the {\bf Plot Tram Map...} option (after zooming the plot several times using the Z key). The tram lines run through the centre of the data on which they are overlaid.}}{75}
\contentsline {figure}{\numberline {8.3}{\ignorespaces Correct appearance of a reduced 2dF arc exposure. The lines run straight up the image as all fibres have been rebinned to the same wavelength scale. Compare with Figure\nobreakspace {}8.4\hbox {}.}}{76}
\contentsline {figure}{\numberline {8.4}{\ignorespaces Appearance of an incorrectly reduced 2dF arc exposure. The arc lines in different fibres do not line up. Such a result is usually caused by incorrect wavelength or grating information in the header, or (as in this example) by use of the wrong arc line list. Compare with Figure\nobreakspace {}8.3\hbox {}.}}{83}
\contentsline {figure}{\numberline {8.5}{\ignorespaces The Plot Window}}{97}
\contentsline {figure}{\numberline {8.6}{\ignorespaces Fibre spectrum contaminated by neon emission from a neon lamp on the 2dF electronics}}{100}
\contentsline {figure}{\numberline {8.7}{\ignorespaces Fibre spectrum contaminated by emission from a red light emitting diode on the 2dF electronics. The LED causes the broad emission feature at 6600\r A.}}{101}
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\contentsline {figure}{\numberline {9.1}{\ignorespaces Efficiencies for Low Dispersion Gratings}}{105}
\contentsline {figure}{\numberline {9.2}{\ignorespaces Efficiencies for Medium Dispersion Gratings}}{106}
\contentsline {figure}{\numberline {9.3}{\ignorespaces Efficiencies for High Dispersion Gratings}}{107}
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\contentsline {figure}{\numberline {10.1}{\ignorespaces Figure showing the total 2dF system efficiency as a function of wavelength, for the 300B gratings. The squares and diamonds represent broadband absolute efficiency measurements from Jan 1997 and Nov 1999, respectively, corrected to 1.0 arcsec seeing. The solid line was obtained from a relative throughput calibration using data from Jan 2001, scaled to approximately match the broadband measurements. Figure taken from Lewis et al. 2001.}}{109}