Class SkyField

source code

An class for specifying the parameters and building a WCS object
    for a user-specified drizzle product.
The user may optionally modify the values for:
    psize       - size of image's pixels in arc-seconds
    orient      - value of ORIENTAT for the field
    shape       - tuple containing the sizes of the field's x/y axes
    ra,dec      - position of the center of the field
                  decimal (124.5678) or
                  sexagesimal string _in quotes_ ('hh:mm:ss.ss')
    crpix       - tuple for pixel position of reference point in
                    output image
Usage:
    To specify a new field with a fixed output size of 1024x1024:
    --> field = pydrizzle.SkyField(shape=(1024,1024))

    The 'set()' method modifies one of the parameters listed above
    without affecting the remainder of the parameters.
    --> field.set(psize=0.1,orient=0.0)
    --> field.set(ra=123.45678,dec=0.1000,crpix=(521,576))

    View the WCS or user-specified values for this object:
    --> print field