Classified IRAS90 commands

  IRAS90 applications may be classified in terms of their functions as follows:

Astrometric Utilities:

SKYALIGN:

Align images using internally stored astrometric information.

SKYBOX:

Report extent and position of a rectangular region of the sky.

SKYGRID:

Annotate a picture with a celestial coordinates grid.

SKYLINE:

Draw meridians, parallels and great circles over an image.

SKYMARK:

Draw markers over an image at specified celestial coordinates.

SKYPOS:

Transform positions between image and celestial coordinates.

SKYWRITE:

Write text over an image at specified celestial coordinates.

Examining Data:

FFIELD:

Identify the ISSA fields covering a given position.

HISTORY:

Display history from a group of NDFs.

IFIELD:

Display IRAS SKY SURVEY ATLAS plate details for a specified position.

IRASTRACE:

Display IRAS extension information from a group of NDF.

PSCONT:

Make a hard-copy contour map with sky coordinate grid.

SHOWQUAL:

Display the qualities currently defined within an NDF.

SKYPHOT:

Calculate integrated fluxes in rectangular, elliptical or polygonal regions.

TRACECRDD:

Graphically display detector data streams from a CRDD file.

Handling CRDD:

BACKCRDD:

Remove a background from a group of CRDD files.

COADDCRDD:

Coadd CRDD traces crossing specified positions.

DEGLCRDD:

Deglitch a group of CRDD files.

DESTCRDD:

Equalise detector offsets within a group of CRDD files.

FINDCRDD:

Accepts a list of sources, and prepares files specifying corresponding CRDD data to be extracted.

HISTORY:

Display history from a group of NDFs.

IRASTRACE:

Display IRAS extension information from a group of NDF.

MAPCRDD:

Map a group of CRDD files into an image.

NEWUNITS:

Change the system of units in which an NDF is stored.

POINTCRDD:

Detects point sources along the trace(s) of CRDD NDF file.

POSCRDD:

Locate the closest CRDD files to a given position.

SIMCRDD:

Generate simulated CRDD from a supplied trial sky image.

TRACECRDD:

Graphically display detector data streams from a CRDD file.

Handling Images:

COLCORR:

Create colour corrected surface brightness images.

COLTEMP:

Create colour temperature and optical depth maps.

FFIELD:

Identify the ISSA fields covering a given position.

HISTORY:

Display history from a group of NDFs.

IRASTRACE:

Display IRAS extension information from a group of NDF.

NEWUNITS:

Change the system of units in which an NDF is stored.

PREPARE:

Prepare a FITS image for use by other IRAS90 routines.

PSCONT:

Make a hard-copy contour map with sky coordinate grid.

SETIMAGE:

Assign new global properties to an IRAS90 image.

SKYALIGN:

Align images using internally stored astrometric information.

SKYBOX:

Report extent and position of a rectangular region of the sky.

SKYGRID:

Annotate a picture with a celestial coordinates grid.

SKYLINE:

Draw meridians, parallels and great circles over an image.

SKYMARK:

Draw markers over an image at specified celestial coordinates.

SKYPHOT:

Calculate integrated fluxes in rectangular, elliptical or polygonal regions.

SKYPOS:

Transform positions between image and celestial coordinates.

SKYWRITE:

Write text over an image at specified celestial coordinates.

Handling Quality:

QUALTOBAD:

Set NDF pixels bad which have a given set of qualities.

REMQUAL:

Remove the definition of pixel qualities from an NDF.

SETQUAL:

Assign a quality to a group of pixels in an NDF.

SHOWQUAL:

Display the qualities currently defined within an NDF.

Others:

I90HELP:

Display help on IRAS90.