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acr_astro

Yet another pastel sketch of H alpha solar disc with filaments

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Dear all,

two days after the previous sketch, I made another pastel sketch of the H alpha sun showing quite well, how the sun rotated and how the filaments and prominences have changed in two days:

20190609_Sun_H_alpha_filaments_01.JPG.1d6ad75f0289e9af948b233d562cccd4.JPG

Telescope: Lunt LS 50 THa B600 PT
Eyepiece: Celestron X-cel 10mm
Date & Time: June 7th, 2019 / 1000-1030 CEST
Location: home terrace, Dusseldorf region, Germany
Technique: reddish and black Koh-i-Noor soft pastels and pastel pens on light-grey Hahnemühle Ingres mould-made pastel paper
Size: 24x31cm

Here's the direct comparison:

201906_07_to_09_Filaments_01.JPG.080328d9440ec755dbb2c9f8c0903dbf.JPG

I struggled a bit with the white balance on the smart phone camera when taking the pictures of the sketches. Both are done on the same light-grey paper.

Clear and sunny skies!

Achim

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Great sketches, Achim. Thanks!

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      I heard the sun wasn't very active at the moment. Is it still active when you look through H-Alpha? (I don't really understand the difference!)
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      Dear all,
      now the summer heat seems to be gone. It's still sunny but not that hot anymore. Perfect weather for sketching for the H alpha sun:

      Telescope: Lunt LS50THaB600PT
      Eyepiece: Celestron X-Cel 10mm
      Date & Time: August 30th, 2019 / 1230-1300 CEST
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      Telescope: Lunt LS 50 THa B600 PT
      Eyepiece: Celestron X-cel 10mm
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    • By acr_astro
      Dear all,
      as usual, I couldn't resist to create yet another charcoal sketch of the H alpha sun. It is relaxing for me to observe the proms and filaments and to try to catch them "as they are" on the paper. At first glance, the sun looks pretty similar - just at second glance and comparison with my other sketches, I have seen that it looks similar but always a bit different. The disc and the prominences are done with natural charcoal, just for the filaments, I needed a Koh-i-Noor artificial charcoal pen since it's darker.

      Telescope: Lunt LS 50 THa B600 PT
      Eyepiece: Celestron X-cel 10mm
      Date & Time: July 1st, 2019 / 1015-1045 CEST
      Location: home terrace, Dusseldorf region, Germany
      Technique: natural vine charcoal and Koh-i-Nor charcoal pen on white Hahnemühle Ingres mould-made pastel paper
      Size: 24x31cm
      Clear (and sunny) skies!
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