Year: 2015

Greg Nicholl captures Aurora Australis from Sydney

June 23, 2015

Greg Nicholl was fine tuning equipment on his telescope near La Perouse, in the south of Sydney, early this morning, June 23 2015, when he noticed a subtle pink glow on the southern horizon. Greg takes up the story...

The Winter Solstice 2015 – long nights for winter viewing

June 19, 2015

Has it been dark lately when you arrive home from work or school? Have you noticed the nights are long and the days are cold? Its winter solstice time again! Solstice means "sun standstill", but the Sun's apparent motion doesn't stop nor does the Earth stop turning.

May 2015 night sky guide transcript and sky chart

May 1, 2015

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 Melissa Hulbert, Sydney Observatory's Astronomy Programs Coordinator.

25-04-2015 ANZAC Program : Sky over Gallipoli

April 24, 2015

On the ANZAC weekend and through to the 24th May Sydney Observatory is turning back the clock, and changing our latitude and longitude in the planetarium to recreate the sky as it appeared to the troops as they landed at Anzac Cove…

Harry sees a Great Prominence Eject

April 15, 2015

A Great Prominence Ejects, Sketch and copyright Harry Roberts ©, all rights reserved. Regular solar observer & correspondent Harry Roberts reports on the ejection of a large prominence from the Sun's limb.

Daily Cosmobite: Autumn equinox

March 22, 2015

This morning at 9:45am AEDT the Sun crossed from the southern to the northern part of the sky. On this day daytime and nighttime are almost equal at 12 hours each. Daytime though is a little longer than 12 hours due to the size of the Sun's disc and because the atmosphere bends the light from the Sun.

Dancing Curtains of Light

March 22, 2015

From the 13-17 March I was in Tromso, before heading further north for the eclipse. The 14th was the first chance of a clear night and friends and I joined an aurora chase out of Tromso into darker, hopefully clear skies.

Totality on Ice

March 21, 2015

Today dawned cold (-24 degrees), bright and clear and we headed off early on snowmobiles to a remote area away from Longyearbyen. High on the mountain at Fjordnibba, overlooking Tempelfjorden was the perfect place to observe the eclipse from.

Seeking Totality

March 20, 2015

I’m currently sitting in a well heated room, snow and ice along the window, overlooking an icy fjord. Where am I? I’m at latitude 78 degrees north on the island of Svalbard where the temperature outside is now a balmy -25 degrees.

Happy π Day!

March 14, 2015

That’s right! Today is the day that we celebrate the mathematical constant π (Pi) – 3.141592653589793232384626433… But why is today Pi Day? Because… if you write the date in the MM/DD format, today is 03/14 and 3.14 are the first three digits of the irrational number that is the ratio of a circles circumference to its diameter.

This coming Saturday: 120 Years of Astronomy Seminar

March 11, 2015

Saturday 14 March 2015, 5pm to 8:30pm. Cost: $10. Organised by Sydney City Skywatchers , the city’s astronomy club, and held at Sydney Observatory this is an opportunity to hear great speakers focus on the contributions of amateur astronomers.

March 2015 night sky guide transcript and sky chart

March 1, 2015

To help you learn about the southern night sky, Sydney Observatory provides an audio guide/podcast, transcript of that audio, and a sky map or chart each month. This month's guide is presented by Geoffrey Wyatt, Sydney Observatory's Education Program Producer.