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First results Baader AstroSolar Photographic Filter

Yesterday I tested the Baader AstroSolar Photographic Filter in combination with the Baader Kontinuum filter. This combination only lets a small part of the spectrum (540nm) get through and should give high contrast in the sunspots and granulation. Here are the first results. The images where taken with the Nikon Coolpix 4500 mounted on

the TAL 100 RS (4-inch refractor), using a 10mm Vixen Lanthanum eyepiece (100x) I did not use any other filters than the Baader Kontinuum. The first three images are stacked out of 15 originals (1600 x 1200, f 5.1, 1/500s, ISO 100) using Keiths Image Stacker. Both images where processed with image processing software (unsharp masking, contrast +15, and resizing). The fourth image was stacked out of 35 images (1600 x 1200, f 5.1, 1/30s, ISO 100).

In the first image I left the original colour (green from the Kontinuum filter), in the second image I converted the first image into greyscale. The third and fourth image are in original colour again. For a first result, they look very promising. On the first image, a hint of granulation can be seen. Also notice the sunspot on the suns limb.

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Posted by Math on 07/17 at 02:01 AM
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