INVESTIGADORES
LARES HARBIN LATORRE marcelo
congresos y reuniones científicas
Título:
Tratamiento formal de imágenes astronómicas con PSF espacialmente variable
Autor/es:
SÁNCHEZ, BRUNO; DOMINGUEZ, MARIANO; LARES, MARCELO
Lugar:
San Juan
Reunión:
Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2016
Institución organizadora:
Instituto de Ciencias Astronómicas de la Tierra y del Espacio
Resumen:
We present a python implementation of a method for PSF determination in the context of optimal subtraction of astronomical images. We introduce an expansion of the spatially variant point spread function (PSF) in terms of the Karhunen Loève basis. The advantage of this approach is that the basis is able to naturally adapt to the data, instead of imposing a fixed ad-hoc analytic form. Simulated image reconstruction was analyzed, by using the measured PSF, with good agreement in terms of sky background level between the reconstructed and original images. The technique is simple enough to be implemented on more sophisticated image subtraction methods, since it improves its results without extra computational cost in a spatially variant PSF environment.