Category Archives: Uncategorized

The demoting of VW Dra

Posted on November 13, 2011 by Gustav Holmberg

I am setting up a programme of variables to observe, and when I searched through AAVSO:s observation planner two weeks ago for semiregular variables bright enough for my binoculars (and the very light-polluted sky where I live), one of the … Continue reading →

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R Ari

Posted on November 9, 2011 by Gustav Holmberg

One of the great visual surveys of the northen sky was done at Bonn by Friedrich Wilhelm Argelander with the aid of his asistants Eduard Schönfeld and Adalbert Krüger. They observed the sky north of -2 degrees declination during the … Continue reading →

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V538 Cas

Posted on November 4, 2011 by Gustav Holmberg

BD 60deg 201 is a star in Cassiopeia. Its variability was discovered by R. Weber. It was one of 75 new variables announced in 1958 after analysis of 2 068 photographic plates exposed between 1942 and 1958 using three cameras … Continue reading →

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R Dra

Posted on November 2, 2011 by Gustav Holmberg

I’m writing a series of posts on objects I observe or find interesting for other reasons. Let’s start it off with R Dra. This Mira with a period of 246 days varies between 6.7 and 13.2 visually. Its variability was … Continue reading →

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