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!
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!
! SDDL Name: QAAPERTURES.SDDL
!
! Purpose: This SDDL file defines the qaapertures relation.
!
! Modification History:
!
! Date OPR Who Reason
! -------- ------- --- -------------------------------------------------
! 11/15/94 27329 SSS Original implementation
! 03/31/96 30900 MRB Add C output
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!
LANGUAGE C, FORTRAN, SQL
INCLUDE ZSPSS_USER_TYPES.SDDL
RECORD QAAPER_TYPE
DESCRIPTION "This relation defines the size, shape, and location
of the science instrument apertures. Three fundamental
cartesian coordinate systems are used. The first of
these systems is the V1-V2-V3 system. It is the three
dimensional 'vehicle' coordinate system. The V2-V3
plane defines the 'aperture' plane. The other two
fundamental coordinate systems are defined in the
aperture plane relative to the V1,V2,V3 frame.
The Science Instrument Coordinate System (SICS) is
actually a set of coordinate systems; one or more for
each science instrument. Coordinates are expressed
in arcseconds. Generally there is one SICS defined
for each aperture.
The Science Aperture Coordinate System (SIAS) is
similar to the SICS except the coordinates are
expressed in units appropriate for the instrument
(i.e. pixels). SIAS is not used in SPSS.
In addition to defining the size, shape, and location
of each aperture, this relation also defines the
conversion factors needed to transform coordinates
expressed in one coordinate system to another. See
the SPSS Algorithms document (SE-06-02 Appendix B) for
a complete discussion of these transformations.
A 'macro' aperture is defined to be the region around
a scientific instrument where it is necessary to avoid
bright objects for instrument safety. The region is
usually circular or rectangular, and it includes a
number of real apertures. Both macro and real
apertures are defined in this relation."
FIELD coord_id
TYPE C10
DESCRIPTION "This is the aperture coordinate system ID. It is the
name of the aperture coordinate system used to specify
the location of the target within the aperture."
FORM
NAME "APR"
LABEL "APERTURE COORDINATE SYSTEM ID"
END_FORM
END_FIELD
FIELD source
TYPE C1
DESCRIPTION "This field specifies the source of the record
(aperture) in this relation. The possible
choices are 'U' and 'S'. 'U' implies the aperture
is user defined. 'S' implies the aperture is
'system' defined."
FORM
NAME "APR"
LABEL "SOURCE OF THIS RECORD (U/S)"
END_FORM
DISCRETE "S", "U"
END_FIELD
FIELD macro_ap_flg
TYPE YES_NO_FLAG_TYPE
DESCRIPTION "This flag indicates whether the aperture is a macro
aperture. 'Y' implies the aperture is a macro
aperture. 'N' or ' ' implies the aperture is not
a macro aperture."
FORM
NAME "APR"
LABEL "MACRO APERTURE (Y/N)"
END_FORM
END_FIELD
FIELD macro_apr_id
TYPE C4
DESCRIPTION "This field specifies the macro aperture ID associated
with the aperture."
FORM
NAME "APR"
LABEL "MACRO APERTURE ID"
END_FORM
END_FIELD
FIELD center_v2
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field specifies the V2 coordinate of the center
of the aperture. This defines the SICS X direction
center (Xo)."
FORM
NAME "APR"
LABEL "V2 COORDINATE (ARCSECONDS)"
END_FORM
END_FIELD
FIELD center_v3
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field specifies the V3 coordinate of the center
of the aperture. This defines the SICS Y direction
center (Yo)."
FORM
NAME "APR"
LABEL "V3 COORDINATE (ARCSECONDS)"
END_FORM
END_FIELD
FIELD aper_shape
TYPE C1
DESCRIPTION "This field specifies the geometric shape of the
aperture. The possible choices are 'P', 'C', 'Q',
or 'R'.
'P' implies a pickle shape (FGS). 'C' implies a
circular shape. 'Q' implies a quadrilateral shape.
'R' implies a rectangular shape.
FORM
NAME "APR"
LABEL "APERTURE SHAPE (P/C/Q/R)"
END_FORM
DISCRETE "C", "P", "Q", "R"
END_FIELD
FIELD radius
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for circular or pickle
shaped apertures and is defined in the SICS system.
For a circular aperture, this is the radius of the
aperture measured from the center ('center_v2',
'center_v3'). For a pickle aperture, this is the
outer radius."
FORM
NAME "APR"
LABEL "RADIUS OF APERTURE (ARCSECONDS)"
END_FORM
END_FIELD
FIELD vertex1_x
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the X coordinate of vertex 1."
FORM
NAME "APR"
LABEL "X COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex1_y
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the Y coordinate of vertex 1."
FORM
NAME "APR"
LABEL "Y COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex2_x
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the X coordinate of vertex 2."
FORM
NAME "APR"
LABEL "X COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex2_y
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the Y coordinate of vertex 2."
FORM
NAME "APR"
LABEL "Y COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex3_x
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the X coordinate of vertex 3."
FORM
NAME "APR"
LABEL "X COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex3_y
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the Y coordinate of vertex 3."
FORM
NAME "APR"
LABEL "Y COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex4_x
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the X coordinate of vertex 4."
FORM
NAME "APR"
LABEL "X COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex4_y
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
SICS system. These apertures are defined in counter-
clockwise order from vertex 1 to vertex 4. This is
the Y coordinate of vertex 4."
FORM
NAME "APR"
LABEL "Y COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex1_v2
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V2 coordinate of vertex 1."
FORM
NAME "APR"
LABEL "V2 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex1_v3
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V3 coordinate of vertex 1."
FORM
NAME "APR"
LABEL "V3 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex2_v2
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V2 coordinate of vertex 2."
FORM
NAME "APR"
LABEL "V2 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex2_v3
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V3 coordinate of vertex 2."
FORM
NAME "APR"
LABEL "V3 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex3_v2
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V2 coordinate of vertex 3."
FORM
NAME "APR"
LABEL "V2 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex3_v3
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V3 coordinate of vertex 3."
FORM
NAME "APR"
LABEL "V3 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex4_v2
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V2 coordinate of vertex 4."
FORM
NAME "APR"
LABEL "V2 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD vertex4_v3
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for quadrilateral or
rectangular shaped apertures and is defined in the
V2-V3 system. These apertures are defined in
counter-clockwise order from vertex 1 to vertex 4.
This is the V3 coordinate of vertex 4."
FORM
NAME "APR"
LABEL "V3 COORD"
END_FORM
RANGE "0 .. 3600"
END_FIELD
FIELD aper_ref_ang
TYPE R*8
UNITS "DEGREES"
DESCRIPTION "This is the aperture reference angle (Ta). It
specifies the rotation angle needed to transform
from SICS to V2V3 coordinate systems. The angle is
measured counter-clockwise as viewed looking along
the +V1-axis from the V3-axis to the positive side
of the aperture's major axis."
FORM
NAME "APR"
LABEL "SI APERTURE REFERENCE ANGLE (degrees)"
END_FORM
RANGE "0 .. 360"
END_FIELD
FIELD parity
TYPE I*2
DESCRIPTION "This is the parity value required to transform from
SICS to V2V3 coordinate systems. This field is -1
for left-handed SICS and +1 for right-handed SICS."
FORM
NAME "APR"
LABEL "PARITY VALUE USED IN TRANSFORMATION"
END_FORM
END_FIELD
FIELD polynomial
TYPE I*2
DESCRIPTION "This field indicates the degree of the polynomial
used in the transformation from SIAS to SICS. The
maximum value is 5."
FORM
NAME "APR"
LABEL "POLYNOMIAL"
END_FORM
END_FIELD
FIELD x_sic_center
TYPE R*8
DESCRIPTION "This is the x coordinate (in pixels) of the origin
of the SICS system expressed in the SIAS system. "
END_FIELD
FIELD y_sic_center
TYPE R*8
DESCRIPTION "This is the y coordinate (in lines) of the origin
of the SICS system expressed in the SIAS system."
END_FIELD
FIELD x_sia_center
TYPE R*8
DESCRIPTION "This is the x coordinate of the origin of the SIAS
system expressed in the SICS system."
FORM
NAME "APR"
LABEL "X COORD CENTER"
END_FORM
END_FIELD
FIELD y_sia_center
TYPE R*8
DESCRIPTION "This is the y coordinate of the origin of the SIAS
system expressed in the SICS system."
FORM
NAME "APR"
LABEL "Y COORD CENTER"
END_FORM
END_FIELD
FIELD inner_radius
TYPE R*8
UNITS "ARCSECONDS"
DESCRIPTION "This field is only significant for pickle shaped
apertures and is defined in the SICS system.
This is the inner radius of a pickle aperture."
END_FIELD
FIELD inner_orient
TYPE R*8
UNITS "DEGREES"
DESCRIPTION "This is the inner radius orientation angle of a pickle
aperture. The angle is measured counterclockwise
as viewed looking along the positive V1-axis from the
V3-axis to the center of the inner radius."
END_FIELD
FIELD inner_extent
TYPE R*8
UNITS "DEGREES"
DESCRIPTION "This is the angular extent of the inner radius of a
pickle aperture. The angle is measured from the
center of the inner radius."
END_FIELD
FIELD outer_orient
TYPE R*8
UNITS "DEGREES"
DESCRIPTION "This is the outer radius orientation angle of a pickle
aperture. The angle is measured counterclockwise as
viewed looking along the positive V1-axis from the
V3-axis to the center of the outer radius."
END_FIELD
FIELD outer_extent
TYPE R*8
UNITS "DEGREES"
DESCRIPTION "This is the angular extent of the outer radius of a
pickle aperture. The angle is measured from the center
of the outer radius."
END_FIELD
END_RECORD
RELATION qaapertures
TYPE QAAPER_TYPE
DESCRIPTION "Science Instrument Aperture Data Relation"
SUBSYSTEM_USING "SPSS"
FORM
NAME "APR"
END_FORM
INDEX qaapertures_1
TYPE unique, clustered
FIELDS coord_id
END_INDEX
END_RELATION
INSTANCE qaapertures
GLOBAL
TYPE QAAPER_TYPE
END_INSTANCE
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