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Large sunspot group
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23-04-2013, 04:04 PM
John W
(John Wilkinson)
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Join Date: Jan 2010
Location: Castlemaine, Victoria, Australia
Posts: 1,419
Large sunspot group
AR11726 continues to move across the Sun and is worth imaging. I measured its size across at around 170,000 km. This image is a single shot taken with a Canon 550d camera at 1/250 sec and ISO200, thru a WO 81 mm scope with Baader wedge. Cheers all.
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