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tomlouden committed Mar 9, 2017
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Expand Up @@ -33,6 +33,8 @@ Or as "hotspot_t" to specify in terms of brightness temperature, in which case t

.. note:: Because there is a sharp contrast in flux levels between *spot* and *not spot* regions, this brightness model can have issues with quantisation, which produces unphysical "steps" in the lightcurve. This can be for the time being be solved by including a numerical integration step in regions with sharp contrasts with the optional paramter "grid_size"

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**grid_size**
This model has a sharp boundary, so can have quantization issues. Regions with sharp changes in brightness are for now integrated numerically instead of analytically, this sets the number of grid points to use in the integration along each direction, to the total number of additional function calls will be this value squared. Setting this too high can significantly slow the code down, however if it is too low fits may be numerically unstable. Use caution. This is a temporary fix and is intended to be removed in a future version (default: 10)

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