Bibcode
                                    
                            Sanchez Almeida, J.; Martinez Pillet, V.
    Referencia bibliográfica
                                    Applied Optics (ISSN 0003-6935), vol. 32, no. 22, p. 4231-4235.
Fecha de publicación:
    
                        8
            
                        1993
            
  Número de citas
                                    14
                            Número de citas referidas
                                    12
                            Descripción
                                    We show that grazing-incidence telescopes, like those used for X-ray
imaging, present negligible instrumental polarization. This property
does not depend on the number of reflections the telescope employs to
lead light from the entrance pupil to the focal plane. The result
applies to the various mirrors of the advanced X-ray astrophysics
facility satellite. In this particular case we have quantified the
residual instrumental polarization to be between 10 exp -3 and 5 x 10
exp -5, depending on the size of the resolution elements.