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Sun on Dec 28
Dec 28. I have been following AR2473 as it move across the sun's disc. Two images are shown here - yellow one is thru a WO 81 mm refractor with herschel wedge at 540 nm; second one is a Ha shot with a Lunt 100. Both single exposures with a Canon 550d. Thanks for viewing. John W.
Last edited by John W; 28-12-2015 at 03:14 PM.
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