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image sun-h-alpha-1290mm-r5-2021-12-18-4C3A1880+63.e-0.5xs.jpg is Copyrighted by Roger N. Clark, www.clarkvision.com

The Sun in Hydrogen-Alpha Emission, December 18, 2021

The Sun shines at many wavelengths from many processes. This image shows the light emitted at a wavelength of 656.3 nm using a narrow band filter. This wavelength shows fine structure on the solar disk as well as solar prominences, which can only be seen with such narrow band filters and during a total solar eclipse.

Technical. The image was obtained with a stock Canon EOS R5 Mirrorless Digital Camera and Canon 100-400 L IS zoom lens at 300mm plus a Daystar Camera Quark Hydrogen Alpha Chromosphere filter plus an energy rejection filter (for safety). Exposure: 1/320 second at ISO 320. The filter includes a 4.2x teleconverter, so the focal length was about 1300 mm. A second image at 1/200 second for the prominences was combined with the solar disk for this composite to show both, The image here is shown at full scale.

To learn how to obtain stunning images like this, please visit my Extensive Articles on Photography .


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Image ID: sun-h-alpha-1290mm-r5-2021-12-18-4C3A1880+63.e-0.5xs.jpg

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Last updated August 01, 2022