Bibcode
Martinez Pillet, V.
Bibliographical reference
Solar Physics (ISSN 0038-0938), vol. 140, no. 2, Aug. 1992, p. 207-237. Research supported by DGICYT.
Advertised on:
8
1992
Citations
42
Refereed citations
38
Description
A description of the stray-light problem based on a radiative transfer
approach is presented. The 2D convolution that describes the effect of
the stray-light is recovered in this formalism. The controversy raised
by the old normalization condition is satisfactorily eliminated within
the present description. The present formalism is applied to aureole
observations and derived the spread function parameters. These
parameters are similar to the ones used in the standard approach but now
a new quantity appears. It is derived consistently within the present
formalism and it allows a description of different atmospheric quality
conditions without changing the actual shape of the spread function. It
is shown how, for large spots, the contamination of stray-light can be
considered as an added constant level of light throughout the umbra.