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Photos

PICTURE OF THE DAY

SpottedSun

The Spotted Sun

This Hydrogen-alpha-filtered image of the Sun displays numerous sunspots across its surface. Each spot has a temperature several thousand degrees lower than the surrounding gas. (Lunt Solar Systems LS60THa/B1200CPT Hydrogen-alpha telescope, Imaging Source DMK31 CCD camera, 1 minute of exposures at 30 frames per second, each exposure lasting 5.1 milliseconds, taken July 4, 2014, between 2:09 p.m. and 2:17 p.m. CDT, from Natchez Trace State Park, Lexington, Tennessee)

IMAGING BASICS see all »

ISON_Nov15_Peach

Catch Comet ISON with your camera

Be ready to photograph this special celestial visitor with these expert tips.
The Leo Trio

2010 Astroimaging Contest: Deep-sky category entrants

Nebulae dominated the category, but the winner is a beautiful trio of galaxies.
The Milky Way

2010 Astroimaging Contest: General category entrants

Image entries ranged from star trails to solar halos, but the category winner is a stunning Milky Way composite.
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