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M51 Galaxy. The Whirpool Galaxy

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M51 Galaxy

Description: M51 Galaxy, known as The Whirlpool Galaxy, is a bright spiral galaxy fairly close to us (7.5 Megaparsecs = 25 million light years). To the north of M51, at the top of the picture, is a companion galaxy which is being disrupted by the gravitational tidal forces of the main galaxy.
The B-band image was obtained by SAR el Príncipe de Asturias (Crown Prince of Spain) on his visit to the William Herschel Telescope the day before the first stone ceremony of the Spanish 10-m GranTeCan telescope.

Credit: Javier Méndez (ING) and Nik Szymanek.

Date: 2 June 2000.

Technical information:
Telescope: 4.2m William Herschel.
Instrument: Prime Focus Camera.
Detector: EEV 42-80.
Filters and exposure times: B, V and R. Exposure time was 300s in each band.

Available formats: JPEG (110 K) | JPEG (264 K) | TIFF (17,114 K) | PDF (with text) | PDF (poster with text)

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Last modified: 22 December 2010