Tag Archives: Miras

R Dra past max

Posted on January 5, 2016 by Gustav Holmberg

The current R Dra maximum was, as noted earlier, comparatively bright. My brightest observation was at 6.2 on December 13. Here are the latest six maxima as reported by Swedish observers:

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Lightcurve: T Cep

Posted on June 3, 2014 by Gustav Holmberg

First in the series of posts on lightcurves is T Cep, which has become one of my favorite variables. It is circumpolar, which is always a nice thing – no season gaps in the light curve. Also, it clears the … Continue reading →

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Miras in the Kepler field

Posted on May 1, 2012 by Gustav Holmberg

We run a programme of studying 50 neglected miras in the Swedish variable star community. After having found out, by chance, that one of the stars was in the Kepler field, I decided to check out if more of our … Continue reading →

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Neglected miras

Posted on April 17, 2012 by Gustav Holmberg

Here is a status report (in Swedish) for the project on 50 neglected miras observed by SAAF/SVO observers. Update: Thomas Karlsson has made a page that gives an overview of the observations in SAAF V/SVO programme of neglected Miras.

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KK Aurigae

Posted on April 9, 2012 by Gustav Holmberg

I’ve been observing KK Aurigae for some six weeks or so. It is situated close to YY Aurigae, a star I am observing for a programme on neglected Miras together with some fellow Swedish amateurs, and sometimes it ends up … Continue reading →

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The companion of W Aurigae

Posted on November 20, 2011 by Gustav Holmberg

Looking up W Aurigae in the Simbad database, we find that it is a double star, Cou 1725. Paul Couteau discovered the double star nature of W Aur in 1979, when he measured the star on three nights. The stars … Continue reading →

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W Aur

Posted on November 17, 2011 by Gustav Holmberg

Lydia Ceraski discovered 219 variable stars (or 180 – the literature disagrees somewhat). Among them are important ones such as SU UMa, RV Tauri and T UMi. Despite that, not much is known about her. She graduated from the Petersburg … 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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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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