Session

The stability of the Solar system

ByNACAA Webmaster 13 January 2024

Presenter(s): Warwick Kissling

Affiliation(s): RASNZ

Session details: Saturday, 2024-03-30 03:30:00, STAR

Abstract

The stability of the Solar system is one of the ‘classical’ problems in Celestial mechanics. In this talk I’ll outline the historical development of the subject, after first explaining the concepts of chaos and stability, and how they apply in everyday life and in physics. The subject continues to develop to this day, and the most recent results may surprise people!

Biography

Warwick Kissling has been an amateur astronomer for more than 50 years. He has a PhD in Engineering/applied mathematics and works in the Earth Sciences modelling the flow of underground hot water in geothermal systems in New Zealand. He enjoys applying his mathematical modelling skills to astronomical problems.

Session

Welcome to NACAA XXXI
ByNACAA Webmaster 27 November 2023

Presenter(s): Various Session details: Saturday, 2024-03-29 22:00:00, STAR Abstract The Central West Astronomical Society and NACAA welcome you to Parkes for our 31st event. We hope you enjoy it. We would like to acknowledge the Wiradjuri people who are the traditional custodians of the land on which we are meeting. We pay our respect to…

Read More Welcome to NACAA XXXI
Session

Visual Observation of the Magellanic Clouds, Past and Present
ByNACAA Webmaster 23 November 2015

Presenter(s): Alan Plummer Affiliation(s): VSS Session details: Sunday, 2016-03-27 03:00:00, LT104 Abstract Of all the night sky, no fields are so rich or challenging to observe than the Large and Small Magellanic Clouds. What follows are some highlights of historical observations of these fields, along with recent visual variable star estimates of selected stars. The…

Read More Visual Observation of the Magellanic Clouds, Past and Present
Session

The 2013-14 Apparition of the Planet Venus
ByNACAA Webmaster 11 November 2013

Presenter(s): Barry Adcock Session details: Posters Abstract A series of photographs and drawings of the planet Venus taken during the current apparition will be presented. The observations were made using a variety of filters including ultraviolet filters taken mainly during daylight hours. Some interesting conclusions may be drawn. Biography An Electrical Engineer by profession, I…

Read More The 2013-14 Apparition of the Planet Venus
Session

Analysing a Variable Star – from observations to physical model.
ByNACAA Webmaster 18 March 2012

Affiliation(s): ASV, VSS Session details: Saturday, 2012-04-07 04:15:00, TBA Abstract Observing the changes in brightness of a variable is the essential first stage in finding out what it is like astrophysically. In this talk I will take as an example CU Hydrae, an eclipsing binary that had hardly ever been looked at since its discovery…

Read More Analysing a Variable Star – from observations to physical model.
Session

A Method for Differential CCD or DSLR Photometry Requiring No Determination of Air Mass or Extinction Coefficients
ByNACAA Webmaster 15 February 2012

Presenter(s): Roy Axelsen Affiliation(s): Astronomical Association of Queensland Session details: Saturday, 2012-04-07 06:00:00, TBA Abstract Where comparison stars and the variable star differ in colour index, and particularly when observations are made at high air mass, accurate classical differential photometry requires the determination of air mass and extinction coefficients. This paper describes a method in…

Read More A Method for Differential CCD or DSLR Photometry Requiring No Determination of Air Mass or Extinction Coefficients
Session

Registrations Open
ByNACAA Webmaster 15 March 2018

Session details: Saturday, 2018-03-30 21:30:00, MCON

Read More Registrations Open

Abstract

Biography

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