AR2712 in Hα (Brent Newton)

Contains: Solar system body or event

AR2712 in Hα

I had the fortune of using a friend's 90mm Cornado scope this past weekend. I had peered into smaller Coronado scopes before and had been relatively unimpressed. Squinting enough to see the faint prominences on the sides of the sun is always difficult for me, but I was interested in seeing how imaging would work.

Another friend and I took 2 sets of data, one using multiple exposures amounts using a DSLR (as we did not know if an HDR would be required, and one with an ASI224, which required 6 panels to complete a mosaic. This offered more detail, but suffered from uneven gradients sue to the nature of the scope and the fact that we had to move the FoV around to complete the mosaic, resulting in intersecting bright and dark patches on the completed mosaic.

Processing involved trashing the B channel, using the G channel for generous amounts of Unsharp Mask, Smart Sharpen, Local Contrast Enhancement (Caroboni), and some experimenting with inverted Luminosity and Multiply blending. Mostly followed the tutorial found here: https://www.youtube.com/watch?v=GIhicqcytvI

Original
Final
B

B

Description: Reprocess using the blue channel from each panel as it was the only properly exposed part of the histogram and more careful panel alignment and PixInsight tools for sharpening. False color applied in PS

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Central USA

Solar

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AR2712 in Hα

AR2712 in Hα

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AR2712 in Hα

AR2712 in Hα

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