Subsections

• OBE_MODE
• Parameters
• Description
• Last Update
• Author

GETOBJECT

OBE_MODE

IMAG

IMAG_2

IMAG_4

IMAG_8

IMAG_9

IMAG_4S4

IMAG_VGW

IMAG_VGW2

IMAG_VGW4

IMAG_VGW8

IMAG_VGW9

IMAG_VGW4S4

IMAG_BL64

IMAG_BL128

SPEC

SPEC_2

SPEC_4

SPEC_ABBA

SPEC_2S2

SPEC_4S4

Parameters

Parameter	Default Value
	IMAG	IMAG_2, IMAG_4, IMAG_8, IMAG_9
	IMAG_VGW	IMAG_VGW2,IMAG_VGW4,IMAG_VGW8,IMAG_VGW9
DATASET_ID	"DS0000"	"DS0000"
DITH	-	10.0
OBJECT	"OBJECT"	"OBJECT"
RA	DUMMY	DUMMY
DEC	DUMMY	DUMMY
EQUINOX	DUMMY	DUMMY
PA	(-90.0-2.0*!TSCL.INSROTPA)	(-90.0-2.0*!TSCL.INSROTPA)
EXPTIME	NOP	NOP
FILTER	NOP	NOP
SLITX	NOP	NOP
SLITY	NOP	NOP
NSAMPLE	NOP	NOP
NFRAME	6	6

Parameter	Default Value
	SPEC	SPEC_2, SPEC_4, SPEC_ABBA
DATASET_ID	"DS0000"	"DS0000"
DITH	-	10.0
OBJECT	"OBJECT"	"OBJECT"
RA	DUMMY	DUMMY
DEC	DUMMY	DUMMY
EQUINOX	DUMMY	DUMMY
PA	DUMMY	(-90.0 - 2.0 * !TSCL.INSROTPA )
EXPTIME	NOP	NOP
FILTER	NOP	NOP
SLITX	NOP	NOP
SLITY	NOP	NOP
NSAMPLE	NOP	NOP
NFRAME	3	3

Parameter	Default Value
	IMAG_4S4	SPEC_2S2
	IMAG_VGW4S4	SPEC_4S4
DATASET_ID	"DS0000"	"DS0000"
DITH	20.0	10.0
OBJECT	"OBJECT"	"OBJECT"
RA	DUMMY	DUMMY
DEC	DUMMY	DUMMY
EQUINOX	DUMMY	DUMMY
PA	(-90.0 - 2.0 * !TSCL.INSROTPA)	(-90.0 - 2.0 * !TSCL.INSROTPA)
EXPTIME	NOP	NOP
FILTER	NOP	NOP
SLITX	NOP	NOP
SLITY	NOP	NOP
NSAMPLE	NOP	NOP
NFRAME	6	3
RASEC_SKY	180.0	180.0
DECSEC_SKY	180.0	180.0

Parameter	Default Value
	IMAG_BL64
	IMAG_BL128
DATASET_ID	"DS0000"
OBJECT	"STANDARD"
RA	DUMMY
DEC	DUMMY
EQUINOX	DUMMY
PA	DUMMY
EXPTIME	NOP
FILTER	NOP
SLITX	NOP
SLITY	NOP
NSAMPLE	DUMMY
NSTEP	1

Description

Get frames by dithering the pointing of the telescope.

• [IMAG,IMAG_VGW]
  Obtain NFRAME frames with exposure time EXPTIME without nodding the telescope.
• [IMAG_2,IMAG_4,IMAG_8,IMAG_9]
  Do (2,4,8,9)-point dithering and obtain NFRAME frames at each pointing with exposure time EXPTIME.

  The dithering patterns are shown below.

• [IMAG_VGW2,IMAG_VGW4,IMAG_VGW8,IMAG_VGW9]
  Same as above, but used when auto-guiding is active .

• [IMAG_BL64, IMAG_BL128]
  Obtain high-speed partial readout frames without nodding the telescope.
  
  
  
• [SPEC]
  Obtain NFRAME frames with exposure time EXPTIME without nodding the telescope.

• [SPEC_2,SPEC_4,SPEC_ABBA]
  Do (2,4,ABBA)-point dithering along the slit of OHS/CISCO and obtain NFRAME frames at each pointing with exposure time EXPTIME and number of multi-sample NSAMPLE.

  Because the nodding is realized by CCD offset, DITH should be smaller than 20. The dithering patterns are shown below.

• [IMAG_4S4,IMAG_VGW4S4,SPEC_2S2,SPEC_4S4]
  Same as IMAG_4, IMAG_VGW4, SPEC_2, SPEC_4, except obtain sky frames by nodding
  $\Delta$RA=RASEC_SKY $^{\prime\prime}$
  $\Delta$Dec=DECSEC_SKY $^{\prime\prime}$
  before each on-source pointing.

  Expected to used for extended objects.

  

Last Update

2002/03/04

Author

George Kosugi, Fumihide Iwamuro, Kentaro Motohara