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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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Jupiter
Jupiter – 26 august 2009
Some images of the planet Jupiter taken on 26th August 2009, at 00:10 UTC in Kosice, Slovakia-EU, by me – Jozef Kozar. The viewing was not very good. The light poluution of the sky was very big. However I tried to do the best image as I was able, this is the result. I used the refractor f=800 mm and two various eyepieces, one allowed 45x and the other one 225x zoom. The refractor was on equatorial mount.. I didn’t use any filter.
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Images above: amateur observation of Jupiter. Not very good results caused by very high light pollution in the city.
Jupiter – 24 august 2009:
Look at the Jupiter seen in city, influenced by the strong light pollution. This time is the planet visible also with its small moons. The seeing throuh the 800 mm telescope with the eyepiece allowing the small 45x zoom will bring you quite good image. The filter would be helpful, but also without it could be the planet seen quite O.K..
The image taken by Olympus digital camera (only 2 mpx) behind the eyepiece of the telescope:
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