Automatic Removal of Fringes from EFOSC Images

Colin Snodgrass (1) , Benoît Carry (2)

1 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
2 IMCCE - Institut de Mécanique Céleste et de Calcul des Ephémérides

EFOSC, in common with many instruments with older CCDs, shows a fringe pattern in images taken at red wavelengths. These fringes are difficult to remove without significant manual adjustment for each individual frame, which is a time-consuming exercise, but necessary for reliable photometry of faint objects across the whole field of view. We present a simple technique to automatically remove fringes from CCD images, and provide scripts (available on the ESO website) to apply this to EFOSC data, or to any other images.

Domaines: Planétologie et astrophysique de la terre [astro-ph.EP]; Planétologie et astrophysique de la terre [astro-ph.EP]

Colin Snodgrass, Benoît Carry. Automatic Removal of Fringes from EFOSC Images. The Messenger, 2013, 152, pp. 14-16. ⟨hal-00844047⟩