Aina Musaeva is an astronomy guide at Sydney Observatory while an honours astronomy student with The University of Sydney. She is a keen observer and member of the Sydney City Skywatchers, regularly presenting at meetings.
While Part I reported on the early stages of this group - here we discuss its very unusual magnetic class. When AR11429 appeared at the sun’s east limb it was already a compact delta group, a blend of opposite polarities in one big penumbra (Fig.
Sunset on 29 August 2005 from Sydney Observatory. At the equinox the Sun sets much further to the left or south. Photo Nick Lomb There are four turning points in the year: the summer and winter solstices and the spring and autumn equinoxes.
The constellation of Orion imaged on the evening of 12 March 2012 with the main stars labelled. Image and copyright Nick Lomb ©, all rights reserved There is a lot to see in the evening sky this March 2012.
Detailed sketches of reversed sunspot group AR 11429 on 4 & 6 March 2012 (UT). Image and copyright Harry Roberts ©, all rights reserved Sunspots are fairly predictable when they first emerge on the sun and grow steadily bigger.
I visited Old Perth Observatory, located in King’s Park on Mt Eliza, a fabulous site with park and river views, in November 2011. The site is under the custodianship of the National Trust of Western Australia and the purpose of my visit was to see what remained of the Old Perth Observatory and look for evidence of the Astrographic Catalogue work as part of broader doctoral research for The University of Sydney Museum Studies Department.
The visibility of the 1769 transit of Venus. Map from Transits of Venus by RA Proctor, 1874. Brian Greig collection In Transit of Venus: 1631 to the present I include a series of wonderful visibility maps of each transit of Venus from 1631 to 2012 that were originally published by the British populariser of astronomy Richard Anthony Proctor in 1874.
Your chance to enter Australia's premier astrophotography competition - The David Malin astrophotography competition Entries open on 2 April and close at midnight on Friday 15 June 2012 (AEST) The competition this year will have three sections of entry - General Section, Open Themed Section (the theme this year is 'Symmetries') and a Junior Section (18 and under).
Diagram showing the position of Venus and Jupiter from 6 to 26 March 2012 at two day intervals as seen from Sydney at 8:15 pm AEDT. Jupiter's position on 16 March is not shown. On 26 March a thin crescent Moon moves between the two planets.
6-8pm, Saturday 19 May
Hear astronomer, curator and author, Dr Nick Lomb, talk about his book, ‘The transit of Venus: 1631 to the present’. Part of the Sydney Writers’ Festival.
The paths of Mars and the Earth around the Sun with the positions of the 2012 and 2003 oppositions indicated. Drawing Nick Lomb Every two years or so the red planet Mars is at opposition, when it is on the opposite side of the Earth to the Sun.
Post by Geoffrey Wyatt Calendars are attempts to try to keep track of time by using the cycles of the Sun ad the Moon. The Sun is used via the seasons and its changing position in the sky, for example the equinoxes and solstices.
Sketches of a flare on the edge of the Sun on 12 February2012 (AEST) associated with sunspot AR11419. Image and copyright Harry Roberts ©, all rights reserved The sun is a big place, and active regions (AR) where sunspots, flares and surges occur, are quite small, often less than one thousandth of the visible disc.
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 Senior Astronomy Educator.
A particularly exciting aspect of astronomy is 'discovery'. Sitting in front of a computer, looking at telescopic data, you suddenly realise you are the first person ever to have witnessed some astronomical event.