NAME

coe2eq -- convert a pixel position on a COE projection image section to RA,Dec

USAGE

coe2eq xpix ypix

PARAMETERS

image = "" [file name template]

The names of the input image which must have an appropriate header containing the "conic equal-area" (COE) projection information. Normally this is an output from the EIS drizzle task.

xpix = 0.0 [real]

The pixel position in X for coordinate conversion.

ypix = 0.0 [real]

The pixel position in X for coordinate conversion.

DESCRIPTION

coe2eq converts a pixel position on a output image from the EIS drizzle task in conic equal area (COE) projection into an equatorial position (RA,Dec). The necessary transformation parameters are obtained from the header.

EXAMPLE

coe2eq test.hhh 1000 1000

This command will give the RA,Dec of pixel (1000,1000) on image test.hhh.

TIMINGS

It takes practically no time at all.

BUGS

This task assumes COE projection and doesn't check that this is appropriate.

SEE ALSO

eq2coe,drizzle,parapredriz,stsdas.toolbox.imgtools.xy2rd