CRIRES User Manual
Doc. Number: ESO-254264
Doc. Version: P109.4
Issued on:
2021-12-01
Page:
70 of 99
Document Classification: ESO Internal Use [Confidential for Non-ESO Staff]
·
Number of exposures on each position
(TSF:
SEQ.NEXPO
): gives the number of
exposures per offset position
Figure 41: Illustration showing the apparent locations of the target relative to the slit centre,
as seen from the SV detector for the given parameters, for the case of DETECTOR
coordinate offsets. Offsets in X are perpendicular to the slit, while offsets in Y are always
parallel to the slit. All motions are made in detector coordinates in pixel units (keep in mind
that the pixel scale of the SV detector is 0.0373 arcsec / px).
Figure 42: Illustration showing the apparent locations of the targets relative to the slit centre,
as seen on the SV detector for the given parameters in the SKY coordinate offsets in arcsec
units. If the telescope moves North, the target moves South relative to the slit centre.
