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ANALytic psfs
The ANAL option allows selection of an analytic model. The names of
the option required is entered using the MASK parameter - those
currently supported are,
- TOPHAT
- Value constant out to a specified radius
- GAUSSIAN
- Specified by the FWHM of the gaussian
- TRIANGLE
- Defined by the full width at zero response
- FLAT_TRI
- Defined by the full width at zero response and the
full width at half-maximum.
- KING
- King profile, specified by core radius and index
- LORENTZ
- Specified by half-width at half maximum
The user is then prompted for the exact data required to specify the
shape of the profile using the AUX parameter - the prompt for this
parameter changes with the MASK selected. All spatial information
should be specified in terms of axis units.
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