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PICTURE OF THE DAY

Spiral galaxy M101 in the constellation Ursa Major the Great Bear was one of the first objects cataloged as a “spiral nebula.

M101

Spiral galaxy M101 in the constellation Ursa Major the Great Bear was one of the first objects cataloged as a “spiral nebula.” William Parsons, the Third Earl of Rosse, put this object in his second list of spiral or curvilinear nebulae, in 1851. (12-inch Astronomy Technologies Astro-Tech Ritchey-Chrétien astrograph with an Astro-Physics 2.7 focal reducer for f/6, QHYCCD QHY12 CCD camera, RGB image with 250 minutes of exposures, stacked)

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