Monthly Archives: July 2011

Lee Big Stopper ND Filter

A visit to Coed y Brenin and a walk around the Forest Garden, part of the Glasdir Copper Trail, gave me an opportunity to photograph with the Lee big stopper neutral density filter on a Canon 5D MkII camera. The … Continue reading

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Solar Ha Imaging

The photographs below show the sun in the Hydrogen-alpha (H-a) bandwidth using a PST Stage 2 Lyra Optic 4″ f/11 refractor modified for H-a imaging captured with DMK41 and DMK21 mono CCD cameras and sometimes a 2.5x Powermate for the … Continue reading

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