December 2013

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New Zealand at the 7th International Olympiad on Astronomy and Astrophysics
Navodhi Delpachitra, Connor Hale, Darina Khun, Daniel Yska, Gordon Hudson

In 2013, for the first time, a team of secondary school students from New Zealand competed in the International Olympiad on Astronomy and Astrophysics. This year the 7th was held in Volos, Greece, from July 29 to August 8.
Volume 52, number 4. December 2013. P3

The First Great September Filament
R. W. EVans

During September 2013, astronomers observing the Sun in Hydrogen-alpha light witnessed the exciting activity of two long-lived filaments/prominences:- increasingly called 'filaproms' when they are observed both on the Sun's disc as dark filaments and then on its limb as bright prominences.
Volume 52, number 4. December 2013. P8

Monitoring Our Skies - How do we know if we are successful?
Steve Butler

Why should we monitor the sky? We don't know whether light pollution is getting better or worse over time. We need to establish a baseline of where we are at the moment and repeat the process in a five year cycle. Adapted from a presentation to the Royal Astronomical Society of New Zealand conference in Invercargill in May 2013.
Volume 52, number 4. December 2013. P9

Southern Constellation Names
J.F. Harper

La Caille's first catalogue gave constellation names in French (de la Caille, 1756) and his second in Latin (de la Caille, 1763), which had been for centuries the standard international language for European scholarly work. EVen now the International Astronomical Union (IAU) uses it for constellation names. This paper is about what happened after La Caille's time.
Volume 52, number 4. December 2013. P12

DVD Review - Venus: A Quest
William Tobin

Volume 52, number 4. December 2013. P14

The Second Great September Filament
Harry Roberts

Described are hydrogen-alpha observations of the Sun's second long-lived filament during September 2013.
Volume 52, number 4. December 2013. P15

Dual Maxima Mira Variable Stars
W.S.G. Walker

Amongst Mira Variable stars with periods in excess of 400 days is found a small group which show two maxima in each cycle. Two of these have shown dramatic period changes. Other Miras with period changes may once have been members of this group. Light curves, colours and other behaviour are described as well as a curious distribution in the sky.
Volume 52, number 4. December 2013. P18