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Posted (edited)

Dear all,

these days we have a sunny and hot summer over here. Today I tried to capture the "aura" of the sun caused by some dust in our atmosphere when doing the pastel sketch of the H alpha solar disc. I spent almost half an hour with the solar disc and its aura and then just 15 minutes for the proms and filaments. So here's the result:

20190626_Sun_H_alpha_small.JPG.022143f5d644a98e3996cc4b33fb064c.JPG

 

Telescope: Lunt LS50THaB600PT
Eyepiece: Celestron X-cel 10mm
Date & Time: June 26th, 2019 /1030-1115 CEST
Location: home terrace, Dusseldorf region, Germany
Technique: red and orange Koh-i-Noor pastels and pastel pens on black Canson Mi-Teintes pastel paper
Size: 24 x 32 cm

Clear (and sunny) skies!

Achim

Edited by acr_astro
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Great sketch, thanks for sharing.

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    • By JackCooke
      A quick sketch from the 1st September (sorry - date is wrong on the image). 
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    • By acr_astro
      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
      Location: home terrace, Dusseldorf region, Germany
      Technique: reddish Koh-i-Noor Toison d'Or pastels and pastel pens on yellowish Canson Mi-Teintes pastel paper
      Clear and sunny skies!
      Achim
    • By acr_astro
      Dear all,
      these days we have a sunny and hot summer over here. Today I tried to capture the "aura" of the sun caused by some dust in our atmosphere when doing the pastel sketch of the H alpha solar disc. I spent almost half an hour with the solar disc and its aura and then just 15 minutes for the proms and filaments. So here's the result:

       
      Telescope: Lunt LS50THaB600PT
      Eyepiece: Celestron X-cel 10mm
      Date & Time: June 26th, 2019 /1030-1115 CEST
      Location: home terrace, Dusseldorf region, Germany
      Technique: red and orange Koh-i-Noor pastels and pastel pens on black Canson Mi-Teintes pastel paper
      Size: 24 x 32 cm
      Clear (and sunny) skies!
      Achim
    • By acr_astro
      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:

      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:

      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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