Latest Posts

November 2015 night sky guide and sky chart

November 1, 2015

To help you learn about the southern night sky, Sydney Observatory provides a guide and a sky map or chart each month. This month's guide is presented by Melissa Hulbert, Sydney Observatory’s Astronomy Programs Coordinator.

Calling All Early-Birds: Dawn Planetary Gathering

October 30, 2015

November has a spectacular treat in store for all of you early-birds! During late October, Venus has been dancing in the pre-dawn sky with Jupiter and Mars. This dance continues in early November, with Venus and Mars at their closest on November 3 and 4, after which Venus slowly starts to retreat towards the east horizon.

Harry reports on AR12422, a complex Delta Group

October 12, 2015

Regular solar observer & correspondent Harry Roberts reports on active region AR12422, a complex Delta Group: AR12422: Complex Delta Group.                                                      Harry Roberts Hale’s invention of the visual magnetograph and the Hale Classification of sunspots is a heroic tale, but we can only touch on it here.

Venus hides behind Moon at dawn, Friday Oct 9, 2015

October 8, 2015

  This Friday, October 9, at dawn the Moon will move in front of Venus and hide, or occult, it. These occultations of Venus are visible from Earth once or twice per year, yet from any one location, such as Sydney, it can be about 5 to 10 years between occurrences.

October 2015 night sky guide and sky chart

October 1, 2015

Orionids meteor shower expected to peak on 21 October To help you learn about the southern night sky, Sydney Observatory provides a written guide and a sky map or chart each month. This month's guide is presented by Dr Andrew Jacob (pictured, right), Curator of Astronomy at Sydney Observatory.

August 2015 night sky guide and sky chart

August 1, 2015

To help you learn about the southern night sky, Sydney Observatory provides a guide and a sky map or chart each month. This month's guide is presented by Melissa Hulbert, Sydney Observatory Astronomy Programs Coordinator.

Aroma Festival Comes to Sydney Observatory

July 24, 2015

Coffee/tea and astronomers have long had a symbiotic relationship - there is nothing like a good cuppa at 2am with still a few more hours of observing to go! With that in mind, this Sunday (26th July) is The Rocks Aroma Festival of which Sydney Observatory is a part.

See Venus, Jupiter and the crescent Moon this weekend

July 17, 2015

This weekend, 18 & 19 July 2015, the crescent Moon, Venus and Jupiter make a nice grouping in the western sky in the evening twilight. The Moon may be first visible on Friday night as a thin crescent  below both Venus and Jupiter.

Keeping up with the New Horizons Pluto flyby

July 14, 2015

And finally it's July 14 2015. The New Horizons Pluto fly-by happens today!   After we receive its last approach image at about 5:30pm* AEST New Horizons turns towards Pluto and will be out of touch for many hours.

Pluto – New Horizons images vs the 2010 “Buie” maps

July 7, 2015

In my previous post about Pluto I included three maps, not images, released in 2010 and laboriously made by a team led by Marc Buie of the Southwest Research Institute, Colorado. Fortuitously, the latest New Horizons image also shows three views of Pluto.