Double stars measurements with cheap CCD sensors (French Title: Mesures d'étoiles doubles visuelles réalisées à l'aide de capteurs dtc de grande diffusion)

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

This paper presents 262 measurements of visual binaries. They essentially come from a three years evaluation period of cheap CCD sensors coupled with either off the shelves or modified webcam electronics. The evaluation cycle and results are largely described in Bulletin n°40 de la Commission des Etoiles Doubles (Sept. 2002 - Société Astronomique de France). These devices can produce measurements as consistent as those obtained with a filar micrometer on the same 8" telescope. The most recent measurements (epoch 2004+) were obtained with an "Audine" camera shipped with a KAF400. Besides the stars visited for evaluation purpose, we present some systems of interest : 17 orbital binaries, 35 neglected systems, 15 confirmations and 2 discoveries of a third component in already known systems.

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