Le 23 février 1987, deux astronomes en poste au Chili, Ian Shelton à l'Observatoire de Las Campanas et C.Madsen à La Silla, réalisaient des clichés de routine du Grand Nuage de Magellan, l'une des ...

Here are audio files related to pulsars. They were recorded at Jodrell Bank Observatory. You will find on this page recordings of QSOs worked by radio amateurs, including with ISS, the sound of ...

Choosing a mirror is very difficult, but not as difficult as giving advice on the subject. What are the criteria to choose between the large American manufacturers and their mirrors about which ...

Al decidirme a construir el observatorio la primera desición a tomar fue que tipo de observatorio quería. Principalmente tomé en cuenta dos opciones: la clásica cúpula semiesférica o un techo ...

After some years of use, if you look at the corrector plate of your catadioptric telescope in full light, you will be surprized to discover a great amount of dusts, grease, maybe sap droplets and ...