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82 SOFI User’s Manual - 2.0 LSO-MAN-ESO-40100-0004 Parameter signature Exposure Name Number of columns Header Keyword DET.EXP.NAME DET.WIN.NX Value SOFI 1024 Number of rows DET.WIN.NY 1024 First column of window First row of window Number of exposures DET.WIN.STARTX DET.WIN.STARTY SEQ.NEXPO 1 1 1 List of DITs SEQ.DIT.LIST NODEFAULT List if NDIT SEQ.NDIT.LIST NODEFAULT Filter wheel 1 Filter wheel 2 Instrument Mode INS.FILT1.ID INS.FILT2.ID INS.IMODE NODEFAULT NODEFAULT NODEFAULT Description File name prefix Number of columns in the window Number of rows in the window First column of window First row of window Number of exposures in the sequence Detector Integration Time; individual exposure (sec) Number of DITs averaged into an individual image Filter wheel 1 position Filter wheel 2 position Instrument Mode Table C.21: SOFI img cal DomeFlats and SOFI img cal SpecialDomeFlats. unlike the other templates where the offsets are defined along the RA and Dec, here they are defined along detector rows and columns, and are entered into SEQ.OFFSETX.LIST and SEQ.OFFSETY.LIST. Offsets are in arcsec. Guiding is possible (defaulted to Star-To-Box) if SEQ.COMB.OFFSET is set to True (T) and if guiding was started before the start of the template. If SEQ.RETURN is set to True (T), the telescope slews back to its original position at the end of the template. If not, the telescope is not moved. Although it is possible to observe standard stars with any of the imaging science templates, using this one is recommended because it sets up properly the header keywords necessary for the pipeline data reduction of the standards. In the next example (Table C.23) SOFI img cal StandardStar is used to obtain 5 images: the first on the acquisition position and the others defined by the list of offsets. At the end you have an “x” pattern.