The default number of coefficients to be used when fitting functions to the order blaze.
The type of function to be used is set using the parameter BLZFIT (default is POLY for polynomial).
When BLZFIT=POLY then the number of coefficients should be set to degree of polynomial + 1.
When BLZFIT=SPLINE the number of coefficients should be set to (number of knots + 7) * 2.
When BLZFIT=MEDIAN the number of coefficients should be set to the number of pixels over which a local median value of the blaze function is to be found.
For example, setting BLZ_NPOLY to 4 would permit the fitting of polynomials of the form:
constant + a.x + b.x-squared + c.x-cubed
INITIAL SUGGESTED VALUE: 7.
Martin Clayton