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Calibration Access and Data Handbook

Description

It contains columns for CCDID, nodeID and reference pixel location. Their distance from the camera reference position in x,y and z are given in mm, while the rotation of each CCD is in radians. A second extension provides the description of the active field of view in the form of region expressions.

The CCF contains the following tables:

LINCORD :

Table with data driving coordinate conversion routines; all geometry-related data about the camera system are in the CCF; this CCF is not EPN-specific The table is used/accessed by:

• CAL_rawXY2mm()
• CAL_pixCoord0ToPixCoord1()
• CAL_pixCoord1ToChipCoord()
• CAL_chipCoordToPixCoord1()
• CAL_chipCoordToCamCoord1()
• CAL_camCoord1ToChipCoord()
• CAL_camCoord1ToCamCoord2()
• CAL_camCoord2ToCamCoord1()
• CAL_camCoord2ToSacCoord()
• CAL_sacCoordToCamCoord2()
• CAL_sacCoordToRowCoord()
• CAL_rowCoordToSacCoord()
• CAL_camCoord2ToTelCoord()
• CAL_telCoordToCamCoord2()

Attributes:

MM_PX_X:

[mm] pixel size in X

MM_PX_Y:

[mm] pixel size in Y

MM_PX_LY:

[mm] Y-size of last pixel row

CC12_TX:

[mm] CAMCOORD1$->$2 translation in X

CC12_TY:

[mm] CAMCOORD1$->$2 translation in Y

CC12_TZ:

[mm] CAMCOORD1$->$2 translation in Z

R_CHIP_T:

[K] reference chip temperature

R_CAM_T:

[K] reference camera temperature

EXP_CHIP:

[1/K] therm. expansion coeff. for chip (Si)

EXP_CAM:

[1/K] therm. expansion coeff. for camera (Si)

CC2_TX:

[mm] CAMCOORD2 origin in SACCOORD - X

CC2_TY:

[mm] CAMCOORD2 origin in SACCOORD - Y

CC2_TZ:

[mm] CAMCOORD2 origin in SACCOORD - Z

CC2_RPH:

[deg] CAMCOORD2 orien. in SACCORD - PHI

CC2_RTH:

[deg] CAMCOORD2 orien. in SACCCORD - THETA

CC2_RPS:

[deg] CAMCOORD2 orien. in SACCCORD - PSI

ARC_MM_X:

[arcsec/mm] plate scale in X

ARC_MM_Y:

[arcsec/mm] plate scale in Y

MM_TX:

[mm] origin of telescope frame in SACCOORD - X

MM_TY:

[mm] origin of telescope frame in SACCOORD - Y

MM_TZ:

[mm] origin of telescope frame in SACCOORD - Z

Columns:

CCD_ID:

CCD number [1, 12]

NODE_ID:

node id [0, 1]; always 0 for EPN

X0:

X-coordinate of center of PIXCOORD1 pixel (RAWX0/RAWY0) in CAMCOORD1 system

Y0:

Y-coordinate of center of PIXCOORD1 pixel (RAWX0/RAWY0) in CAMCOORD1 system

Z0:

Z-coordinate of center of PIXCOORD1 pixel (RAWX0/RAWY0) in CAMCOORD1 system

DX0:

absolute uncertainty associated with X0 (currently unused)

DY0:

absolute uncertainty associated with X0 (currently unused)

DZ0:

absolute uncertainty associated with X0 (currently unused)

EULER_PHI:

first angle (in 3-1-3 Euler rotation sequence) to align PIXCOORD1 with CAMCOORD1 frame

EULER_THETA:

second angle (in 3-1-3 Euler rotation sequence) to align PIXCOORD1 with CAMCOORD1 frame

EULER_PSI:

third angle (in 3-1-3 Euler rotation sequence) to align PIXCOORD1 with CAMCOORD1 frame

D_EULER_PHI:

absolute uncertainty associated with EULER_PHI (currently unused)

D_EULER_THETA:

absolute uncertainty associated with EULER_THETA (currently unused)

D_EULER_PSI:

absolute uncertainty associated with EULER_PSI (currently unused)

RAWX0:

PIXCOORD1 X-coordinate of reference pixel whose coordinates are given in (X0,Y0,Z0)

RAWY0:

PIXCOORD1 Y-coordinate of reference pixel whose coordinates are given in (X0,Y0,Z0)

FOV

The table is used/accessed by: CAL_getFOVmap() Table with parameters defining the Field-Of-View

Attributes:

None.

Columns:

CCD_ID:

CCD number [1, 12]

REGION:

valid selectlib expression defining the FOV in the CHIPCOORD system