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Nick goes observing at Linden

November 20, 2006

Bob Evans with his telescope_Nick Lomb Reverend Bob Evans with his telescope at Linden Observatory - picture Nick Lomb Last weekend Nick together with a Sydney Observatory colleague and with the president of Sydney City Skywatchers had a rare opportunity to get away from Sydney's bright sky at Linden Observatory in the Blue Mountains.

Alan sees a new star forming – Z CMa – and wants more observers

May 20, 2009

alan_plummer The light curve of Z CMa from the AAVSO international data base, including the observations of the VSS RASNZ, and the ASAS. The latter is in green. In the constellation of Canis Major, close in the sky to Sirius but far beyond, a so called ‘young stellar object’ (YSO) is brightening.

Alan has an important new role and is looking for keen observers

February 19, 2009

aavso-light-curve-of-the-star-r-carinae Some of these data points could be your contribution to science. The AAVSO light curve of the star R Carinae, observable from light polluted skies with binoculars. This year marks the founding of Variable Stars South (VSS); an organization dedicated to instigating observing and research projects for the benefit of the world wide astronomical community.

Alan observes the outbursting variable star BV Cen and uncovers a mystery

January 10, 2009

beardmore An artists' conception of a dwarf nova system. Matter is transferred from the secondary - a main sequence dwarf star - to the white dwarf primary, forming an accretion disk. Image credit: A. Beardmore, University of Leicester, UK, courtesy AAVSO I am continually surprised at the contributions that an amateur astronomer can make with a cheap telescope, publicly available archived data, and curiosity.

Alan ponders on what kind of star is our Sun?

August 22, 2008

The front of the Sydney Observatory A recent prominence on the Sun photographed by Monty Leventhal. Monty comments: "this is a typical type of prominence during solar minimum. This one reached a height of 61,000 km and was faint as usual with this type."

Gerry sees the beautiful edge on spiral galaxy NGC4565

May 27, 2008

ngc4565_gerry-aarts2 Edge on spiral galaxy NGC4565, image Gerry Aarts Gerry Aarts, the president of Western Sydney Amateur Astronomy Group, WSAAG, reports: Imaged this beautiful edge on spiral galaxy after Bob Evans (Supernova Hunter) showed it to me through the big 30 inch Dobsonian Telescope at the Linden Observatory.

Gerry sees a magnificent galaxy – the Sculptor Galaxy

January 9, 2008

The front of the Sydney Observatory The Sculptor Galaxy from Linden Observatory, image by Gerry Aarts Recently Gerry Aarts, the president of the Western Sydney Amateur Astronomy Group (WSAAG), acquired a new lens for his Celestron GPS11 telescope.

The Helix Nebula

November 23, 2007

The front of the Sydney Observatory Helix Nebula, image by Gerry Aarts at Linden Observatory on 16 September 2007 The colourful Helix Nebula is the closest example in the sky of a planetary nebula. These are somewhat misleadingly named as they have little to do with planets.

Gerry finds a horse’s head in Orion

November 16, 2007

The front of the Sydney Observatory The Horsehead Nebula in Orion, image by Gerry Aarts, WSAAG, Linden Observatory 14 October 2007 Recently Gerry Aarts, the president of the Western Sydney Amateur Astronomy Group (WSAAG), acquired a new lens for his Celestron GPS11 telescope.

Fomalhaut: a Lesson in World Building

October 11, 2007

The front of the Sydney Observatory The brightest star in the constellation of Piscis Australis (the Southern Fish), Fomalhaut can be easily found with the Australian Sky Guide. Fomalhaut image from the Aladin Sky Atlas Several nearby stars have been found to have disks of stuff around them: Fomalhaut, Vega, Beta Pictoris, and AU Microscopii among them.

Famous supernova hunter Bob Evans bags his 41st!!!!

September 18, 2007

The front of the Sydney Observatory NGC 5530. The star on the center of the galaxy is a foreground star; the indicated star is the far-distant supernova. Image courtesy of Gerry Aarts of the Western Sydney Amateur Astronomical Group During the evening of Thursday the 13th of September Bob Evans of Hazelbrook in the Blue Mountains discovered his 41st supernova.

Alan sees a Rabbit in the sky and reflects on Australian history

September 6, 2007

The front of the Sydney Observatory Lepus the Rabbit, drawn by Alan Plummer The 2nd century Roman author Hyginus told a story that could have changed Australian history. According to his book Poetic Astronomy: “At one time there were no hares on the island of Leros, until one man bought in a pregnant female.