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Configuration parameters will change from time to time, usually as a result of
mechanical modifications, and additional configurations are likely to be added.
The definitive list of configurations is held in the file GSS_DIR:CONFIG.DAT,
which may be read or printed. Each configuration is defined by a block
starting with `CONFIG`. The variables defining the configuration are then
listed, in fixed order, with variable names as comments. The translation
between variable names and the symbols used earlier is given in
Table 6. Note that the variables RVEL, THVEL, XVEL and YVEL are
used only by the TAG I-task.

| | | |

Variable name | Symbol | Unit | Notes |

| | | |

| | | |

FOCLEN | F | mm | |

XY FLAG | | | F for $r\theta $; T for $xy$ systems |

PA_OFFSET | $\psi $_{0} | rad | |

FLIP | $\epsilon $ | | |

PA_COORD_SYS | | | T for moving rotator |

SCALER | $e$_{r} | mm/bit | |

SCALETH | $e$_{θ} | rad/bit | |

RADA | $a$ | | |

RADB | $b$ | | |

RADV | $c$ | | |

RADD | $d$ | | |

X0 | $x$_{0} | bits | |

Y0 | $y$_{0} | bits | |

R0 | $r$_{0} | bits | |

XMIN | $x$_{min} | bits | |

XMAX | $x$_{max} | bits | |

YMIN | $y$_{min} | bits | |

YMAX | $y$_{max} | bits | |

RMIN | $r$_{min} | bits | |

RMAX | $r$_{max} | bits | |

THMIN | $\theta $_{min} | bits | |

THMAX | $\theta $_{max} | bits | |

LAXIS | $l$ | bits | |

MAXIS | $m$ | bits | |

XMINUS | $x$_{}- | bits | |

XPLUS | $x$_{}+ | bits | |

YMINUS | $y$_{}- | bits | |

YPLUS | $y$_{}+ | bits | |

X_AP | $x$_{A} | rad | |

Y_AP | $y$_{A} | rad | |

V_MIN | V$$_{min} | mag | |

V_MAX | V$$_{max} | mag | |

MIN_SEP | | rad | Minimum separation |

NUM_STARS | | | Number of stars |

| | | |

**Table 6:** CONFIG.DAT variable names.

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Mon Mar 1 17:52:09 GMT 1999