SDAS Sky Guide 2010
Download the SDAS Sky Guide 2010
South Dublin Astronomy
Astronomy as it should be
Current Moon Phase
Waning Crescent Moon The moon is 25 days old
Distance: 57 earth radii
Ecliptic latitude: -1 degrees
Ecliptic longitude: 106 degrees
IrishAstronomy.org- Subject: Meade F3.3 Focal Reducer FOR SALE - by: michaeloconnell September 4, 2010
- Subject: Oh no......not another image of Jupiter. - by: tony h September 4, 2010
- Subject: Blackrock Castle Observatory - First Fridays - by: dmcdona September 4, 2010
- Subject: Burren Starparty next Weekend - Who's going? - by: skynotes September 4, 2010
- Subject: An almost Full Moon from last February - by: tony h September 4, 2010
NASA Image of the Day
A Chameleon Sky
The sands of time are running out for the central star of this the Hourglass Nebula. With its nuclear fuel exhausted, this brief, spectacular, closing phase of a sun-like star's life occurs as its outer layers are ejected and its core becomes a cooling, fading white dwarf. In 1995, astronomers used the Hubble Space Telescope to make a series of images of planetary nebulae, including the one above. Here, delicate rings of colorful glowing gas (nitrogen-red, hydrogen-green, and oxygen-blue) outline the tenuous walls of the 'hourglass.' The unprecedented sharpness of Hubble's images revealed surprising details of the nebula ejection process and may resolve the outstanding mystery of the variety of complex shapes and symmetries of planetary nebulae. Image Credit: NASA, WFPC2, HST, R. Sahai and J. Trauger (JPL)
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