Point-Source Equivalents
To speed up and de-pixelize the Forward Fitting program (M. Aschwanden, 1999),
Gordon Hurford suggested we find the
"Point-Source Equivalents" for elementary extended sources.
Rationale
- Meshes well with existing simulation package, which accepts point sources as input
- Meshes well with visibility software
- Speeds up and generalizes existing Forward-Fitting code
- Permits elimination of pixelization in existing code
Examples of Elementary Extended Sources
- Gaussians
- Elliptical (flux, x_pos, y_pos, FWHM_1, FWHM_2, angle_orient)
- Orthogonal (flux, x_pos, y_pos, FWHM_1, FWHM_2)
- Circular (flux, x_pos, y_pos, FWHM)
- Segments
- Simple (flux, x_pos, y_pos, semi_len, angle_orient)
- Convolved (flux, x_pos, y_pos, semi_len, angle_orient, FWHM_1, FWHM_2)
- Arcs
- Simple (flux, x_pos, y_pos, arc_radius, arc_halfangle, angle_orient)
- Convolved (flux, x_pos, y_pos, arc_radius, arc_halfangle, angle_orient, FWHM_1, FWHM_2)
Figure 1 Source Objects
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