More robus init for galaxy

[codecov[bot]]

Codecov Report

Merging #138 (53e81e7) into dev (88e9703) will increase coverage by 0.38%. Report is 16 commits behind head on dev. The diff coverage is 83.96%.

@@            Coverage Diff             @@
##              dev     #138      +/-   ##
==========================================
+ Coverage   78.12%   78.51%   +0.38%     
==========================================
  Files          80       80              
  Lines        6999     7098      +99     
==========================================
+ Hits         5468     5573     +105     
+ Misses       1531     1525       -6     

Files	Coverage Δ
astrophot/__init__.py	20.45% <100.00%> (ø)
astrophot/models/_shared_methods.py	88.07% <100.00%> (+1.47%)	:arrow_up:
astrophot/models/galaxy_model_object.py	93.84% <100.00%> (+1.11%)	:arrow_up:
astrophot/utils/angle_operations.py	100.00% <100.00%> (ø)
astrophot/utils/initialize/__init__.py	100.00% <100.00%> (ø)
astrophot/utils/operations.py	95.94% <ø> (ø)
astrophot/models/core_model.py	76.19% <50.00%> (-0.47%)	:arrow_down:
astrophot/fit/lm.py	86.86% <25.00%> (+2.84%)	:arrow_up:
astrophot/models/group_model_object.py	73.41% <69.23%> (-0.38%)	:arrow_down:
astrophot/plots/image.py	73.05% <71.42%> (+0.44%)	:arrow_up:
... and 1 more

... and 1 file with indirect coverage changes

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