On the continuum intensity distribution of the solar photosphere

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Volume 503 / No 1 (August III 2009)

A&A, 503 1 (2009) 225-239

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Table 3:

Average contrast $\delta I_{\rm rms}$ and standard deviation of the original and the deconvolved disc-centre observations in comparison with the synthetic images.
$\delta I_{\rm rms}$	$\lambda$
$[\%]$	450.45 nm		555.00 nm		668.40 nm
observation
original	12.8	$\pm$ 0.5	8.3	$\pm$ 0.4	6.2	$\pm$ 0.2
ideal PSF	18.0	$\pm$ 0.8	12.3	$\pm$ 0.8	9.9	$\pm$ 0.4
full PSF	26.7	$\pm$ 1.3	19.4	$\pm$ 1.4	16.6	$\pm$ 0.7
simulation Ch0 (Steffen 2007)^a
original	25.0	$\pm$ 0.1	18.1	$\pm$ 0.1	13.8	$\pm$ 0.1
ideal PSF	16.7	$\pm$ 0.3	11.4	$\pm$ 0.2	8.2	$\pm$ 0.2
non-ideal PSF (1)	13.0	$\pm$ 0.3	8.6	$\pm$ 0.2	6.0	$\pm$ 0.2
non-ideal PSF (2)	11.3	$\pm$ 0.2	7.4	$\pm$ 0.2	5.1	$\pm$ 0.2
other simulations (original)^b
Ch1	25.8	$\pm$ 0.5	19.0	$\pm$ 0.5	14.6	$\pm$ 0.5
Ch2	25.5	$\pm$ 0.5	18.4	$\pm$ 0.5	13.9	$\pm$ 0.5
Cm	25.4	$\pm$ 0.1	19.0	$\pm$ 0.5	14.7	$\pm$ 0.1
SNh	25.2	$\pm$ 0.6	18.4	$\pm$ 0.4	14.0	$\pm$ 0.3
SNm	22.4	$\pm$ 0.5	16.0	$\pm$ 0.3	12.3	$\pm$ 0.2

^a The effect of the deconvolution with an ideal and a detailed PSF is specified for the model by Steffen (Ch0). The extent of the detailed PSF corresponds to (1) only the size of the model and (2) a periodic repetition of the model to a size of 110 $\hbox{$^{\prime\prime}$ }~\times~$ 110 $^{\prime\prime}$ , which is comparable to the FOV of the observations.
$^{{\rm b}}$ For comparison, the original, i.e., non-degraded contrast values for sets of CO⁵BOLD models (Ch1, Ch2, and Cm) and simulations by Stein & Nordlund (SNh and SNm) are given.

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