EOS P96 - 3.3.2 Blind offset acquisition

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Issue
Date
Page
VLT-MAN-ESO-14650-4942
P96
24.06.2015
73 of 161
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
3.3.2 Blind offset acquisition
It is important to note that the offsets in all templates are offsets on sky as in other Paranal
instruments. They are computed as follows:
the “offset RA” corresponds to (delta RA)xcos(DEC),
and the “offset DEC” is the difference delta DEC.
BLIND OFFSET ACQUISITION
Specify here in arcsec the blind offsets
from the reference/acquisition star to
the science target. Here movements
from the acquisition star of 35.6” to the
west and 20.5” to the north.
Positive value in RA moves the slit to
the east.
Positive value in DEC moves the slit to
the north.
Of course this corresponds to sky
offsets.