Scheduled Discussion TopicsPlease note the talks start at slightly different times because they vary in length and the aim is to finish them around 9.30pm, so they will start promptly. Arrive early if you want to settle down and listen to them with a cup of tea or coffee.
Beginners guide to digital sensors, raw data and calibration17th January 2023 20:30
This talk addresses the following questions: How do digital sensors work? What is genuine raw data and what is calibration and stacking. This is an introductory talk for those who are new to astrophotography.
Von Kármán Lecture: Near Earth Objects31st January 2023 20:30
Comets and asteroids offer clues to the chemical mixture from which the planets formed some 4.6 billion years ago. If we wish to know the composition of the primordial mixture from which the planets formed, then we must determine the chemical constituents of the leftover debris from this formation process - the comets and asteroids. In this talk, we'll discuss with how Near Earth Objects are opportunities for discovery.
How to Photograph the Milky Way14th February 2023 20:30
This is an introduction on how to photograph the Milky Way with a digital camera. It looks at the equipment required, including small portable trackers, typical camera settings and introduces some of the software that can be used for processing the images.
Astrophotography6th December 2022 20:45
This is the first in a series of astrophotography lectures. What photographers call a raw file is in fact, a highly processed file. This lecture looks at how digital sensors work, and demonstrates what a true-raw camera data is and why it is important in astrophotography. It also gives an overview of image calibration, which will be discussed in more depth in following lectures.
Apollo Space Program20th December 2022 20:45
The lecture looks briefly at the Apollo space program of the late 1960's and early 1920's. To mark the eve of the 54th anniversary of the launch of Apollo 8, there is a short video showing the original footage of the 6-day mission, that for the first time took man out of Earth orbit and towards another world.
An Introduction to Deep Space DSLR Astrophotography21st June 2022 20:45
This talk is suitable for all members who would like to know how deep space images are produced. It is an introduction to DSLR deep space astrophotography. We look at the equipment, planning, data acquisition, calibration and processing. The talk is about 75 minutes long, it will start at 8.15pm and there will be a refreshment break mid-way through.
Cosmology5th July 2022 20:45
The universe began 13.8 billion years ago with the Big Bang and has been expanding ever since. We explore how light from distant galaxies reaches us, the difference between dark matter and dark energy and ask how the universe might end. The talk is about 45 minutes long. If you would like refreshments beforehand arrive about 8.30 pm.