Swansea Astronomical Society Blog
Monday, September 16, 2024
The Sun in white light and Ca K-line light with a Seestar S50
Imaging the Sun in white light
A Seestar S50 was fitted with an OD 5.0 Baader solar filter.
Click on an image to get a closer view.
A 3 minute RAW AVI was captured with the brightness control turned down so that there was no saturation in the blue channel. This was a photo captured to show the appearance of the Sun.
The best 50% of the frames in the AVI were debayered and stacked with 1.5 Drizzle in Autostakkert!4
The RGB image was decomposed into the 3 colour channels. The blue channel was the brightest and contained most of the information. The image was wavelet processed in waveSharp and further processed in the Gimp 2.10.
The Sun in white light
Imaging the Sun with a SeestarS50 and a combination of an OD 5.0 Baader solar filter and a Baader stacked Ca K-line filter.
The equipment comprised a holder for the OD 5.0 Solar film kindly 3D printed for me by SAS member John Beer.
The dark blue preview
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