“An imperfect account of a comet…”

to quote Caroline Herschel. There’s a buzz in the media over the rare green comet that’s whizzing past us right now. It’s fuelled in part by the colour (almost certainly not visible to the eye (especially from light polluted regions)), and in part by spectacular images from big telescopes. I like comets, and try to …

Angular resolution of the dome of Planetarium of Majorca from Palma

WOW – what a clickbait title that is… Back from having spent a few days between Christmas and New Year in Palma, Majorca. On the last day there I noticed I could just see the dome of the Planetarium of Majorca (or the telescope dome, I’m not sure which) from the hotel terrace. Seeing conditions …