Subsections

• OBE_MODE
• Parameters
• Description
• Last Update
• Author

SETUPFIELD

OBE_MODE

IMAG

IMAG_VGW

SPEC

Parameters

Parameter	Default Value
	IMAG	IMAG_VGW	SPEC
OBJECT	DUMMY	DUMMY	"FIELDCHECK"
RA	!STATS.RA	!STATS.RA	DUMMY
DEC	!STATS.DEC	!STATS.DEC	DUMMY
EQUINOX	2000.0	2000.0	DUMMY
PA	0.0	0.0	-
AG_SELECT	-	MANUAL	-
I_BOTTOM	-	2200	-
DATASET_ID	-	-	"DS0000"
EXPTIME	-	-	NOP
FILTER	-	-	NOP
SLITX	-	-	NOP
SLITY	-	-	NOP
DX	-	-	0.0
DY	-	-	50.0

Description

This command points the telescope to RA and DEC and sets the position angle to PA$^{\circ}$. It also pulls out the AG-probe to $r=90.0$ if $r<90.0$.

• [IMAG]
  Nothing else.
• [IMAG_VGW]
  Also, it chooses AG star in VGW and starts auto-guiding if AG_SELECT parameter set to AUTO/SEMIAUTO. Default is AG_SELECT=MANUAL, and you have to do it manually. You can set the bottom threshold for AG by I_BOTTOM. Please set this value larger when the background is high.
• [SPEC]
  This is different from above two, which introduce the target onto the slit of OHS/CISCO using the frames obtained by OHS/CISCO.
  It
  1. sets slit of CISCO to SLITX$\times$SLITY, nods the telescope along RA and DEC direction DX, DY respectively, obtain one frame with exposure time EXPTIME and filter FILTER. This will be a sky-frame.
  2. next points the telescope to the initial position and take another frame. This will be an object-frame.
  3. then displays (object-frame - sky-frame) in the skycat of QDAS. You specify the position of the object and the slit in this image, and the object will be introduced to the postion you specified as that of the slit.

  Auto-guiding should be activated when you execute this command. Be sure you have run the following commands.
  SETUPFIELD OBE_MODE=IMAG_VGW
  AGCENTER OBE_MODE=CISCO
  

  However, this command requires a lot of overhead time, and not used anymore. We recommend you to use the combination of
  SETUPFIELD OBE_MODE=IMAG_VGW
  AGCENTER OBE_MODE=CISCO
  PROBEOFFSETBYQDAS OBE_MODE=CISCO
  AGOFFSETBYQDAS OBE_MODE=CISCO
  instead.

Last Update

2002/03/04

Author

George Kosugi, Fumihide Iwamuro, Kentaro Motohara