VLT-MAN-ESO-14650-4942
P96
24.06.2015
117 of 161
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
Figure 19: The slit coordinate system and correspondence between object position in the slit and
position on the spectrum for each arm. An object at positive x (black star top panel) produces spectra
placed as illustrated in the bottom panels. NOTE: a positive offset in the x or y direction will move the
object in direction of +x and +y axis.
Note that the keyword ADA.POSANG in the header indicates the opposite of the slit angle
specified by the user. It corresponds to the rotator angle.
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