Tuesday, 5 June 2012

AR11497 - 4th June

AR11497 by Mark Townley
AR11497, a photo by Mark Townley on Flickr.

This is a nicely developed active region showing bipolar spot group - the arching magnetic field lines can be seen going between the two poles - exactly the same as iron filings and a magnet, apart from each of the single spots is about the size of Earth! The image isn't quite as sharp as I would like as I think the focus had slipped on the Tal refractor - something to fix! Taken with 100mm SS @ f16 DMK31