The Sun in Ca K-line light

The Sun in Ca K-line light. Two overlapping 3000-frame AVIs were captured with AstroDMx Capture through an f/5.5 Ekinox 80mm ED refractor fitted with a Baader OD 3.7 solar filter, with an SVBONY SC432M air-cooled CMOS camera, fitted with a Baader Ca K-line filter and a 5x Balow lens alone (giving 3x increase in focal length). The best 95% of the frames in each AVI were stacked in Autostakkert!4 with 1.5 Drizzle. The two resulting images were stitched in Microsoft ICE. The image mosaic was wavelet processed in waveSharp and post processed in GIMP and ACDSee.

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Equipment used:

The Sun in Ca K-line light

Steve Wainwright and Nicola Mackin