Sources of straylight in the post-focus imaging instrumentation of the Swedish 1-m Solar Telescope

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Table 5

Scattering kernel fit results.

M	Kernel	Blue					Red
M	Kernel
		c	Kernel parameters		FWHM	χ ²	c	Kernel parameters		FWHM	χ ²

36	Gauss	99.8	σ = 8.31		196	0.0143	99.9	σ = 13.74		324	0.0595
36	Lorentz	99.6	γ = 6.61		132	0.0142	99.7	γ = 17.78		356	0.0595
36	Moffat	99.7	α = 9.03	β = 1.36	147	0.0142	99.9	α = 416.03	β = 458.67	324	0.0595
36	Voigt	99.7	σ = 3.98	γ = 4.23	147	0.0141	99.9	σ = 13.64	γ = 0.0008	321	0.0595
231	Gauss	99.8	σ = 8.77		206	0.0148	99.9	σ = 14.61		344	0.0593
231	Lorentz	99.6	γ = 7.38		148	0.0147	99.6	γ = 19.83		397	0.0593
231	Moffat	99.7	α = 11.04	β = 1.56	165	0.0147	99.9	α = 524.28	β = 644.53	344	0.0593
231	Voigt	99.7	σ = 4.59	γ = 4.26	161	0.0147	99.9	σ = 14.39	γ = 0.0008	339	0.0593

Notes. M is the max KL index used in PD. The parameters α, γ, and σ are in units of arcsec, while β is dimensionless. The c parameter is the percentage of the intensity that is not contained within the far wings.

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