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Old 17-09-2023, 01:12 PM
John W (John Wilkinson)
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Join Date: Jan 2010
Location: Castlemaine, Victoria, Australia
Posts: 1,417
17th Sept Sun at two wavelengths

17th Sept. Better sky conditions today helped get better images.
The first images shows the sunspots (taken at 540 nm), the second image at 656 nm (Ha) shows the SW sector of the Sun with the large prominence which has lasted a few days. Both images are single exposures with a Canon 550d. The sunspots at the moment are small.
Thanks for viewing.
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