Setup of Spectrograph

The setup parameters of the spectrograph determined in Section  are given by an abstract command 'SetupOBE' from OBS. The parameters of this command and the ranges of the parameters are given in Table . The parameters are given in the command for the part which observers may wish to change - note that the previous setup is kept if one does not supply a parameter. Also, it should be noted that upper-case and lower-case letters are not distinguished in abstract commands.

ex.1) for slit width= 200 μm, filter= SQ, and inclination angle of cross disperser = 18000 asec;

SetupOBE OBE_ID=HDS SlitWidth=200 Filter1=SQ CrossScan=18000

ex.2) for the standard setup StdRa (see Table );

SetupOBE OBE_ID=HDS Filter_1=Free Filter_2=SC-46 Cross=Red CrossScan=18584 Collimator=Red

Table 9: Parameters of SetupOBE command

parameter	meaning	range/value
Slit_Width	slit width	10-2,000 μm
Slit_Length	slit length	1,000-30,000 μm
Filter_1	filter(turret 1)	ND1 / ND2 / SQ / OG530/ KV408
Filter_2	filter(turret 2)	SC-46 / SC-42 / KV389 / KV370 / GG495
Collimator	collimator	BLUE / RED
Cross	cross disperser	BLUE / RED / MIRROR
Crros_Scan	cross disperser angle	14,000 to 26,000 sec
Echelle	echelle grating angle	-3,600 to 3,600 sec
Cam_Rotate	rotation angle of detectors	-7,200 to 7,200 sec