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Tuesday, August 9, 2011

Gorgeous picture of the southern Spiral Galaxy NGC 300

Gorgeous picture of the southern Spiral Galaxy NGC 300
Click on the image for full resolution (7.6 MB)

This picture of the spectacular southern spiral galaxy NGC 300 was taken using the Wide Field Imager (WFI) at ESO's La Silla Observatory in Chile. It was assembled from many individual images through a large set of different filters over many observing nights, spanning several years. The main purpose of this extensive observational campaign was to get an unusually thorough census of the stars in the galaxy, counting both the number and varieties of stars and marking regions, or even individual stars, that warrant deeper and more focussed investigation. But such a rich data collection will also have many other uses for years to come. The images were mostly taken through filters that transmit red, green or blue light. These were supplemented by images through special filters that allow through only the light from ionised hydrogen or oxygen gas and highlight the glowing clouds in the galaxy’s spiral arms. The total exposure time amounted to around 50 hours.
The full resolution image weighs 7.6 MB, so please be patient when downloading!
Credit: ESO

1 comment(s):

Steve Cohn said...

A great library, I could spend all day with these.

Thank you for sharing.

Steve

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