MOPEX User's Guide - IRSA

MOPEX User’s Guide
Projection: This parameter specifies the projection type of the output mosaic. The TAN and
SIN projections are implemented using the fast direct plane-to-plane coordinate
transformation. The rest of the projections in the WCS library - LIN, AZP, STG, ARC, ZPN,
ZEA, AIR, CYP, CAR, MER, CEA, COP, COD, COE, COO, BON, PCO, GLS, PAR, AIT,
MOL, CSC, QSC, TSC, NCP, DSS, PLT, TNX - are implemented as a two step plane-skyplane
projection. The default projection is TAN.
Coordinate Sys te m: The coordinate system of the output mosaic. The choices are J2000
(Equatorial), Galactic, or Ecliptic. The default is J2000.
Use average input orientation: Defines the orientation of the output mosaic. Checking this
box indicates that MOPEX should use the average of the input BCD orientations. This is the
default setting. To specify an alternative orientation, see CROTA2.
CROTA2: (float) Defines the orientation (degrees East of North) of the output mosaic.
CROTA2 = 0 indicates North up and East left. To use the average of the input BCD
orientations (the default), check the Use average input orientation box. On the command line,
set CROTA2 = A to use the average orientation.
COMMAND LINE INPUT
&FIDUCIALIMAGEFRAMEIN
Edge_Padding = 10,
Projection_Type = "TAN",
Coordinate_System = "J2000",
CROTA2 = A,
&END
In Global Parameters:
MARGIN = 0
MARGIN: (int; command line only) Specifies a margin in terms of the number of pixels
around the Fiducial Image Frame. Normally this is set to zero or a (small) positive number,
except when running the Mosaic flow, using the Mosaic Geometry module, when it should
normally be set to a negative number to avoid including input images that have only marginal
overlap with the FIF.
OUTPUT
Overlap (overlap.pl) 34
Overlap Modules