H alpha image of solar prominences (1 Jan 2022) (rdk_CA)

Contains: Solar system body or event

H alpha image of solar prominences (1 Jan 2022)

Acquisition type: Lucky imaging

H alpha image of solar prominences (1 Jan 2022)

Acquisition type: Lucky imaging

We had a brief break in the clouds on New Year's Day, and after checking the NSO/GONG H-alpha Network Monitor I noticed three rather bright prominences visible on the sun's limb. The structure in these prominences was quite impressive. Even though seeing was not ideal, I could not resist the temptation to try to capture an image of them. I was able to obtain a high resolution image of this region using my 120 mm refractor and Quark solar filter.

As with my other solar images, this is a composite image constructed from two 30 s exposures (one for the chromosphere and one for the prominences). Settings for the prominences were:

ROI: 3096x2080
exp: 10.00ms
gain: 386 (75%)
frames captured: 650
pixel depth: 8 bit/pixel
fps: 30.86

For the chromosphere, I used essentially the same settings, except with a lower gain setting (222). The images were stacked using AutoStakkert! 3 and I used the wavelets feature in Registax to sharpen the image. Final adjustments (including adding the yellowish artificial color) were done in Photoshop.

Happy New Year to all of you -- I hope the new year brings us good luck for astronomy!

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H alpha image of solar prominences (1 Jan 2022)

H alpha image of solar prominences (1 Jan 2022)

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Image Index:

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H alpha image of solar prominences (1 Jan 2022)

H alpha image of solar prominences (1 Jan 2022)

Equipment

Acquisition details

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