I captured this image of a parhelion (sundog) on 24th February 2011 with the camera in my iPhone 3GS at Engadine. The Sun is seen shining through the eucalyptus tree at right in the frame (with a red internal reflection within the camera lens beside it).
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 audio sky guide is presented by Geoffrey Wyatt, Astronomy Educator at Sydney Observatory.
This is a transcript of a podcast of the March 2011 night sky guide presented by Geoffrey Wyatt. Download and listen to the podcast as you gaze up at the night sky. Hello, my name is Geoffrey Wyatt. I’m the Senior Astronomy Educator at Sydney Observatory.
A computer-generated 3D perspective view of the volcano Maat Mons on Venus created from radar images and altimeter data. Credit NASA/JPL As the thoughts of Australians go to the people of Christchurch and its port of Lyttleton after the devastating earthquake of 22 February 2011, let us consider why these happen and where we could go to escape them.
The sunspot group AR11158 at the western edge of the Sun drawn 20 hours apart on 19 February 2011. Image and copyright Harry Roberts ©, all rights reserved AR11158 put on a fantastic spectacle for H-alpha users – but heavy cloud foiled most attempts to see it.
Comparison between the 2005 Deep Impact image of Comet Tempel 1 and the February 2010 image from the Stardust/NExT spacecraft shows the fantastic navigation of the latter craft. Image from NASA, courtesy NASA/JPL-Caltech/University of Maryland/Cornell Comet 93P/Tempel 1 was discovered by Wilhelm Tempel on 3 April 1867 from Marseilles, France.
Sketch of the bright star Sirius and its white dwarf companion Sirius B, as seen in a four-inch (10-cm) Maksutov-type telescope. Image and copyright Harry Roberts ©, all rights reserved Sky-watchers today are having a ‘good run’ – a second transit of Venus is due soon, we’ve seen comets collide with Jupiter (more than once), supernovae have burst forth - and big ‘scopes can now be had for less than a week’s income.
Flux tube model of sunspot formation. Image and copyright Harry Roberts ©, all rights reserved “Giant Magnetic Squids!”- a scary idea, eh? Right now Readers, the giant “squids” are not scary enough!
The main stars of Hydra the female Water Snake with a few neighbours as seen from Australia looking east at about 10 pm AEDT in mid February. Image and copyright Nick Lomb ©, all rights reserved Recently on this blog we wrote about Hydrus the Male Water Snake.
The evolution of sunspots AR11147 and AR11149 over three days in January 2011. Image and copyright Harry Roberts ©, all rights reserved Given the current dearth of big sunspots AR11147 was a welcome sight as it rounded the sun’s east limb, in brief cloud gaps– a large single spot with penumbra.
The inner parts of the galaxy Messier 100 as seen by the Hubble Space Telescope. Image courtesy NASA and the Space Telescope Science Institute The definition of a planet in the solar system was settled at a meeting of the International Astronomical Union in Prague in 2006.
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 audio sky guide is presented by Melissa Hulbert, Astronomy Educator at Sydney Observatory.
This is a transcript of a podcast of the February 2011 night sky guide presented by Melissa Hulbert. Download and listen to the podcast as you gaze up at the night sky. Hello and welcome to the night sky for February.
A picture of the Moon showing colours. Image and copyright David Lloyd-Jones ©, all rights reserved An interesting question about the reality of colours shown on moon photographs was referred to Harry Roberts, who is a frequent contributor to this blog and a member of the Sydney City Skywatchers.
The main stars of Hydrus the Male Water Snake with a few neighbours. Image and copyright Nick Lomb ©, all rights reserved With floods affecting large parts of Queensland, NSW and Victoria, one of the problems faced by returning residents is that of snakes.