Talk

Mon 28th
12:00-12:30
Theatre 106

Memorable Grazing Lunar Occultations and Gaia’s Impact on Astronomy

Dave Herald

CAS

A presentation in two parts: Firstly, a range of interesting and spectacular grazing occultations from Dave's extensive experience. Then, the impacts on astronomy and occultations in particular from the Gaia mission.

Mon 28th
11:30-12:00
Theatre 106

How to carry out multi-station asteroidal occultations - what is a paver mount?

David/Joan Dunham and John Broughton

David and Joan Dunham have been travelling around Australia making occultation observations.  Many of these have been multi-chord asteroidal occultations with unattended stations strategically located across predicted paths.  They have used a range of equipment including some innovative telescope mounting arrangements developed by John Broughton who has also produced some amazing observations.  This talk covers the innovative designs of their equipment and how they put them to use.

Mon 28th
10:00-10:15
Theatre 106

Update on turning your smart phone into a time source beeper box

Stephen Russell

NACAA

Stephen Russell has been wrestling with the challenge of extracting a precise and credible time signal based on NTP from a smart phone. It is very difficult to do and this talk will update us on the latest challenges and dramas.

Mon 28th
09:30-10:00
Theatre 106

Lunar Occultation Observations and Results including double star events

Brian Loader (remote by MeetCheap)

This presentation will update listeners on the current progress of lunar occultation observing and results including new double star discoveries (and debunking) .

Mon 28th
09:00-09:30
Theatre 106

Recent Asteroidal Occultations observed across Australia and New Zealand

John Talbot / Steve Kerr

This presentation reviews planetary/astroidal occultation observing across Australia and New Zealand over the past 18 months.

Sun 27th
16:30-17:00
Theatre 106

Venus Ashen Light Lunar Occultation - How dark is the dark side?

David/Joan Dunham

David and Joan Dunham in the course of their travels around Australia observed the lunar occultation reappearance of a crescent Venus under dark skies in inland Northern Territory to maximise the chance of detecting the Ashen Light.  This presentation covers their findings and observations.

Sun 27th
16:00-16:30
Theatre 106

Recent Asteroidal Occultations Highlights from Across the World

Dave Herald

A presentation of the more spectacular planetary/asteroidal occultations observed around the world over the last two years demonstrating the extraordinary science that can be derived from amateurs operating small telescopes.

Sun 27th
15:30-16:00
Theatre 106

Pluto Occultation 2015 - Amateur contributions to professional science

Bruno Sicardy / John Talbot / Steve Kerr (presenter)

The 29 June 2015 occultation of a 12th magnitude star by Pluto only two weeks out from the New Horizons spacecraft flyby presented a unique opportunity to test models of the structure of Pluto's atmosphere based on earlier occultations against actual spacecraft observations. The occultation was successfully observed across New Zealand and southeastern Australia and this presentation showcases some of the amateur results and the professional science that it supports.

Fri 25th
16:00-16:30
Theatre 106

Some Stars Do & Some Stars Don’t – Reflections on 45 Years of Variable Star Observing

Peter Williams

Sutherland Ast Society; Variable Stars South.

The author reflects on his long term involvement in amateur astronomy and many years of visual observation of variable stars. There are some memorable events during this time, some personal achievements and some results of research on specific stars.

Fri 25th
10:00-10:30
Theatre 106

The Visual Observation of some interesting Long Period Variable Stars

Andrew Pearce

AAVSO, VSS

The presentation describes the author's long term visual monitoring program of a large number of long period variables between declination 10S and 60S. It discusses the aims of the program, the simple telescopic equipment being used and some initial results and insights. It hopes to dispel the myth that long period variable stars are predictable and mundane with some examples of stars which show humps on the ascending portions of their light curves, standstills as well as the useful activity of establishing periods and amplitudes for some lesser known southern NSV stars.

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