Mercury Transit for Stray Light Evaluation: IPM-THEMIS Case

Mainella, G.; Ceppatelli, G.; Mattig, W.; Briand, C.
Referencia bibliográfica

Solar Physics, Volume 234, Issue 1, pp.187-201

Fecha de publicación:
3
2006
Revista
Número de autores
4
Número de autores del IAC
1
Número de citas
6
Número de citas referidas
6
Descripción
Mercury's transit on the solar disk offers ideal conditions to determine the stray light level of instruments. We present here the results on the stray light level deduced from the observation of the Mercury transit on 2003 May 7th at the secondary focus of the THEMIS telescope with the broad-band and spectral channels of the IPM instrument. The scattered light in the broad-band channel is about 17% and about 25% in the spectral channel. The spread function was deduced for the two channels taking into account the observations on the limb and on Mercury's disk.