Jul
9
7:30 pm19:30

Monthly Members Night (click for details)

Monthly Members’ Night - second Wednesday of each month except January.

Tonight - A presentation, followed by informal chat over tea or coffee. Telescope viewing possible afterwards depending on weather and availablilty of scope operators.



Tonight’s Talk

The DEpth of the Night Sky

Speaker: Jonathan Park (from Hamilton Astronomical Society)

Can you guess what these stars might be? The dots don’t represent size, just position and relative brightness from the viewing point. Here’s a clue: the lower left star is our Sun, and the upper right star is 455 light-years away from us.

When we look up at the night sky, it’s easy to imagine that all the stars are placed on a great celestial dome above us. But we know that they lie at vastly different distances, scattered across space, some near and others hundreds of light-years away. In this talk, we'll look at some familiar groups of stars, using graphics to travel away from Earth to view them from different directions. This will help you to get a feel for these distances. While on the topic of how far away these stars are, here's an interesting fact: the speed of light is exactly 299,792,458 metres per second (no additional decimal places, no uncertainty), and this means we can now define a light-year to 100% precision! You'll find out how this works tonight. We will also learn a little about some of these stars - are any binary, triple, or more? How big and hot are they? Do some of them have planets? One is a fascinating system of at least five stars orbiting each other in a very complex pattern.

This talk includes a selection of familiar stars visible to the naked eye, and is suitable for all ages and levels of astronomy knowledge. It may even change how you think about the stars you see at night.

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Aug
13
7:00 pm19:00

HAS AGM

This is the Hamilton Astronomical Society Annual General Meeting. We hope as many HAS members as possible will come along. We will begin the formal meeting at 7:00 pm. After the meeting we have a guest speaker.

Date:
Wednesday 13th August 2025

Time: 
AGM starts at 7:00 pm.

Location:
Hamilton Astronomical Society, 183 Brymer Road, Hamilton, NZ

Guest Speaker:
Moon Landing Conspiracies
Dr. Alista Fow (from the University of Waikato)

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Sept
10
7:30 pm19:30

Monthly Members Night (click for details)

  • Hamilton Astronomical Society (map)
  • Google Calendar ICS

Monthly Members’ Night - second Wednesday of each month except January.

Tonight - A presentation, followed by informal chat over tea or coffee. Telescope viewing possible afterwards depending on weather and availablilty of scope operators.


Tonight’s Talk

Stellar & Exoplanetary Spectroscopy

Speaker: Dr Chris Benton (from Auckland Astronomical Society)

Tonight, you will learn how astronomers read the light from stars to measure their temperature, composition, rotation and much more, plus the atmospheres of distant exoplanets.

We start by explaining how and why atoms absorb and emit light at specific wavelengths before discussing how a prism splits light into its various colours to determine a star’s many properties. This will include a demonstration of a prism and calculating our Sun’s surface temperature, plus images and step-by-step analysis of spectra taken with a local amateur spectrograph. Our discussions will then delve deeper into measuring magnetic fields and surface gravity of stars using this simple technique, before discussing the process and frustrations with analysing the atmospheres of planets beyond our solar system.

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Jun
20
5:30 am05:30

Matariki - Morning Viewing - CANCELLED

Matariki Morning Viewings Cancelled This Year

Unfortunately, due to poor weather, we are cancelling all of our morning Matariki viewings this year - Friday 20th and Saturday  21st (the backup morning). Looking at the forecast, it seems unlikely we’ll be able to see much on either morning, so we hope for good weather in 2026.

The evening lecture has now been moved to Wednesday, July 2nd (our July public night), starting at 7:30 pm. The lecture is on the history and astronomy of Matariki and will be delivered by Richard Croy (committee member of the Hamilton Astronomical Society).

For more details about our public nights, including entry fees, please click here.

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Jun
11
7:30 pm19:30

Monthly Members Night (click for details)

Monthly Members’ Night - second Wednesday of each month except January.

Tonight - A presentation, followed by informal chat over tea or coffee. Telescope viewing possible afterwards depending on weather and availablilty of scope operators.



Tonight’s Talk

The Search for Earth 2.0
Origins, Conditions & Signatures of Life

Speaker: Chris Benton (from Auckland Astronomical Society)

In this follow-up lecture on exoplanets, Chris Benton will focus on the exciting quest for extraterrestrial life on planets beyond our Solar System. We will discuss what life is, what conditions life requires, and how and where life may have started and evolved on Earth before reviewing what types of exoplanets could potentially harbour life and the biosignatures of life in their atmospheres. Come along and join in discussing these and other stimulating questions of astrobiology!

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May
27
7:30 pm19:30

Special Presentation for Members

We are excited to annouce that Professor Rene Breton will present “Cosmic Fireworks” to the members. Please check your emails for information about this event (date, time and location).

“Cosmic Fireworks”

Even though most objects in our Universe – planets, stars, galaxies, etc. – evolve over millions if not billions of years, space is populated with bright phenomena which can take place on very fast time scales, ranging from months all the way down to milliseconds. This talk will explore the world of astronomical transients, which include the cataclysmic supernovae and intriguing fast radio bursts. It will describe how technology enabling the study of time-variable phenomena is reshaping our understanding of the Universe.


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May
26
7:30 pm19:30

Public Lecture: Artificial Intelligence in Astronomy

2025 Beatrice Hill Tinsley Lecture, with Professor Anna Scaife

Monday, 26 May, starting at 7:30 pm, at the University of Waikato.

How Artificial Intelligence is changing the way we do astronomy -
and why that's not necessarily a bad thing.

Entry is open to everyone and is FREE; however, REGISTRATION IS REQUIRED. If you’re interested in attending or would like more information,

please click here to learn more and register your seat(s).

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May
14
7:30 pm19:30

Monthly Members Night (click for details)

Monthly Members’ Night - second Wednesday of each month except January.

Tonight - A presentation, followed by informal chat over tea or coffee. Telescope viewing possible afterwards depending on weather and availablilty of scope operators.


Tonight’s Talk

The Search for Earth 2.0
Part 1: Discovering Exoplanets

Speaker: Chris Benton (from Auckland Astronomical Society)

With over 5,000 planets beyond our Solar System discovered to date, astronomers are unveiling a vast array of “other worlds.” Chris will delve into the methods used to detect these planets, from the transit method to direct imaging, and explore how scientists gather data on their size, composition, and potential for supporting life. He will also discuss the concept of “Earth 2.0” – the search for exoplanets that closely resemble our home planet and could potentially support life. We look forward to seeing you all there for this informative and stimulating discussion.

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