View Full Version here: : Large sunspot group
John W
23-04-2013, 04:04 PM
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. :)
Merlin66
23-04-2013, 04:39 PM
very nice John!
Is that AR11712 coming back into view????
http://www.raben.com/maps
Larryp
23-04-2013, 05:17 PM
Nice image, John! I observed this group this morning-certainly an impressive size.
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