Skynet model manipulation

[tikk3r]

Based on behaviour observed in #113 I think there is something off about the skymodel manipulation that skynet.py currently does. For traceability I'm opening this as a separate issue. The images below show the VLASS image, the pipeline's selfcal and facetselfcal's result when given the same VLASS image:

Model differences from the same VLASS image input:
Skynet

# (Name, Type, Patch, Ra, Dec, I, Q, U, V, MajorAxis, MinorAxis, Orientation, ReferenceFrequency='144e+06', SpectralIndex='[]', LogarithmicSI) = format
, , P0, 00:00:00, +00.00.00
ME0,GAUSSIAN,P0,10:42:07.07427757,+56.20.35.11342256,0.7501937174536204,0.0,0.0,0.0,1.6648132122494166,1.2344896254335085,109.43104961290301,144e+06,[-0.7],true
ME1,GAUSSIAN,P0,10:42:06.08426152,+56.20.42.68432263,0.0933097437405896,0.0,0.0,0.0,1.6331785957898932,0.34046779089727963,136.72680994037083,144e+06,[-0.7],true

Facetselfcal

format = Name, Type, Patch, Ra, Dec, I, Q, U, V, MajorAxis, MinorAxis, Orientation, ReferenceFrequency='3.00000e+09', SpectralIndex='[]'

, , ILTJ104206.59+562039.5_vlass_patch_s0, 00:00:00, +00.00.00
ILTJ104206.59+562039.5_vlass_w0_i0_s0_g0, POINT, ILTJ104206.59+562039.5_vlass_patch_s0, 10:42:7.119336, +56.20.35.033496, 2.555e-02, 0.0, 0.0, 0.0, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.00000e+09, [-0.8]
ILTJ104206.59+562039.5_vlass_w0_i0_s0_g2, POINT, ILTJ104206.59+562039.5_vlass_patch_s0, 10:42:6.991234, +56.20.35.438892, 1.120e-02, 0.0, 0.0, 0.0, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.00000e+09, [-0.8]
ILTJ104206.59+562039.5_vlass_w0_i0_s0_g3, GAUSSIAN, ILTJ104206.59+562039.5_vlass_patch_s0, 10:42:6.768397, +56.20.35.979193, 6.761e-03, 0.0, 0.0, 0.0, 4.41003e+00, 0.00000e+00, 1.68543e+02, 3.00000e+09, [-0.8]
, , ILTJ104206.59+562039.5_vlass_patch_s1, 00:00:00, +00.00.00
ILTJ104206.59+562039.5_vlass_w0_i0_s1_g1, POINT, ILTJ104206.59+562039.5_vlass_patch_s1, 10:42:6.086021, +56.20.42.687386, 3.819e-03, 0.0, 0.0, 0.0, 0.00000e+00, 0.00000e+00, 0.00000e+00, 3.00000e+09, [-0.8]
, , ILTJ104206.59+562039.5_vlass_patch_s2, 00:00:00, +00.00.00
ILTJ104206.59+562039.5_vlass_w0_i1_s2_g4, GAUSSIAN, ILTJ104206.59+562039.5_vlass_patch_s2, 10:42:4.669273, +56.21.1.664814, 2.484e-03, 0.0, 0.0, 0.0, 2.34113e+00, 9.84720e-01, 6.75894e+01, 3.00000e+09, [-0.8]