Month: June 2007

Aussies on the Moon: Colin Gum

June 29, 2007

Moon observer extraordinaire and member of the Sydney City Skywatchers, Harry Roberts, sends the following article about a well remembered Australian astronomer who achieved much in a short life and career.

July 2007 night sky guide and podcast

June 28, 2007

To help you learn about the southern night sky, Sydney Observatory provides a night sky star map or chart for each month of the year (see the link below). We also provide an audio guide of the month’s night sky, presented by one of Sydney Observatory astronomy experts (this link also below).

Venus and Saturn have a close approach

June 27, 2007

Venus and Saturn at 6 pm on Thursday 28 June 2007, drawn by Nick Lomb Rikta asks: Hi nick, everyday above Saturn is a star? Can u tell me its name.But I know to the left of Saturn is Regulus.This star, and the planers Saturn and Venusmake a beatiful line up every night in the north-west?

Harley Wood public lecture on Monday 2 July

June 26, 2007

Dr Harley Wood in front of the astrographic telescope at Sydney Observatory in 1965, painting copyright George A Daniel On the evening of Monday 2 July 2007 Professor Matthew Bailes of Swinbourne University will present the annual Harley Wood lecture at Macquarie University.

The Milky Way – a galaxy with a bar

June 25, 2007

In 1926 Hubble published a classification of these extra-galactic nebulae, as galaxies were then known, and the two drawings reproduced above (I assume in Hubble’s own hand, as the article doesn’t say otherwise) are types Sb and Sc in the now-named Hubble Sequence of galaxy structure.

Festival of the Stars 2007

June 21, 2007

A plea from Geoff of Sydney Observatory for people to turn off the lights on July 6 and 7 in the CBD and North Sydney for the Festival of the Stars. Details of this wonderful Festival can be found on our What's On page.

The winter solstice – the shortest day

June 21, 2007

Sunset on 29 August 2005 as seen from Sydney Observatory, image Nick Lomb Melissa asks: Something that bothers me every year is this: which day actually has the shortest day and the longest night (or v-v), eg is it sundown prior to the solstice to sunup just after the solstice which is the longest night?

AR 10960: The end of solar cycle 23 postponed?

June 19, 2007

A flare at sunspot 960, drawn by Harry Roberts The Sun has an activity cycle of about 11 years. The activity cycle relates to the number of sunspots and associated phenomena such as the explosions of magnetic energy called flares as well as ejections of material from the Sun's outer layers called coronal mass ejections.

Saturn occulted by the Moon on 22 May 2007

June 15, 2007

Sketch of Saturn occultation on 22 May 2007 as seen from Ireland, courtesy Deirdre Kelleghan Many exciting astronomical events happen during a year, but only some of them can be seen from any particular place.

Congratulations to Professor Paul Davies AM

June 13, 2007

Paul Davies with a piece of a meteorite from Mars, from Paul Davies' website The Queen's Birthday honours list, announced on Monday 11 June 2007 included the cosmologist, prolific author and brilliant lecturer Professor Paul Davis.

List of blue moons from Sydney 2007 to 2050

June 8, 2007

The first quarter Moon in July 2005, image Nick Lomb As discussed in yesterday's post there will be a blue moon at the end of June. Below is the list of blue moons to 2050. Times are given in Australian Eastern Standard Time though one possible blue moon was eliminated as it will not qualify under daylight saving.

Sydney Observatory Work Experience Students June 8, 2007

June 8, 2007

Here we have Caitlin, Nicole and Packy talking about...US! They have done a wonderful job. They started late Wednesday afternoon and did all the video, editing and even made their own music! http://www.youtube.com/watch?v=ipgTKklIBsM

Blue moon in June

June 7, 2007

A picture of the Moon made to look blue, image & image fiddling Nick Lomb This month in Eastern Standard time there will be a blue moon on Saturday 30 June. In response to a question in yesterday's (6 June 2007) Column 8 in the Sydney Morning Herald, here is a brief guide.