Keyword Position Type Description
------- -------- ---- -----------
FRAME 1 INTEGER Coordinate frame
1 = RA/DEC
Default = 1 2 = Ecliptic
3 = Galactic
4 = axis coordinates
5 = pixel coordinates
RA1 2 CHAR RA of first point
DEC1 3 CHAR DEC " "
RA2 4 CHAR RA of second point
DEC2 5 CHAR DEC " "
ELON1 - DOUBLE Ecliptic longitude (dec. deg.)
ELAT1 - DOUBLE Ecliptic latitude " "
ELON2 - DOUBLE Ecliptic longitude (dec. deg.)
ELAT2 - DOUBLE Ecliptic latitude " "
L1 - DOUBLE Galactic longitude of first point.
B1 - DOUBLE Galactic latitude " " "
L2 - DOUBLE Galactic longitude of second point.
B2 - DOUBLE Galactic latitude " " "
X1 - REAL X-coord of first point.
Y1 - REAL Y-coord " " "
X2 - REAL X-coord of second point.
Y2 - REAL Y-coord " " "
XPIX1 - REAL X-pixel of first point.
YPIX1 - REAL Y-pixel " " "
XPIX2 - REAL X-pixel of second point.
YPIX2 - REAL Y-pixel " " "