Imaginea Astronomica a Zilei

Descopera cosmosul! In fiecare zi este prezentata o noua imagine sau fotografie a universului nostru fascinant, insotita de o explicatie scurta din partea unui astronom profesionist.

2003 August 7
See Explanation.  Clicking on the picture will download
 the highest resolution version available.

Palomar at Night
Credit & Copyright: Greg Redfern (2003 JPL NASA Solar System Ambassador)

Explicatie: (Edit) What's wrong with this picture? The summer night sky is clear, and moonlight illuminates the dome of the Hale 200-inch Telescope at Palomar Observatory, northeast of San Diego, California, USA. The familiar stars of the Teapot asterism in the constellation Sagittarius shine above the dome and to the right. In fact, the only thing wrong with the picture is that the observatory dome's two massive shutters are closed tight ... on a clear night. This extremely unusual situation is a precaution prompted by the presence of airborne ash and smoke from wildfires in the area on July 17 which could have damaged the historic mirror's aluminum coating. Amateur astronomer Greg Redfern notes that this year has been a particularly bad one for observatories and wildfires, with the Mt. Stromlo Australian Observatory disaster and fires also threatening telescopes on Mount Lemmon near Tucson, Arizona.

Imaginea de maine: Blue Collisions

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