Variable Stars: Observing Stellar Evolution

Alan Plummer,

Variable Stars South, American Association of Variable Star Observers, Linden Observatory

The observation and study of variable stars is uniquely tied to stellar evolution. Over time observers can gain a rare perspective into the lives of stars; not, as is usual, from books alone, but through the telescope. From inconstant newborn stars, to old stars ponderously shaking off their envelopes, and exotic binary systems, the observations of variable star observers are used by astronomers to probe the nature of stars.

This presentation gives some examples of real time stellar evolution, including some really spectacular events, and describes how and why to get involved in this most rewarding field.

Designing and Building a Geodesic-domed Observatory

Chris Morley,

Latrobe Valley Astronomical Society

The value of an observatory in your own backyard cannot be overestimated. Countless evenings spent taking the equipment outside and then setting it up wastes a lot of potential observing time, especially for one who lives in Southern Victoria where a period of a few hours of clear observing time is precious. This presentation initially discusses the process for the design concept, and then some of the design and construction challenges for a two-storey, circular, geodesic-domed-observatory. The simplicity, strength and cost of the geodesic dome are outlined, as is the design and construction of a solid tall pier and a freely-running turntable. For a relatively modest outlay, the finished observatory not only provides a proper home for the telescope and a spacious sheltered observing facility, but it can also look attractive in your garden. I am pleased to be able to share my experience with you so that some might feel more confident to embark on such a rewarding project and benefit from significantly more observing time.