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acr_astro

Natural charcoal sketch of the H alpha sun, 2019-06-14

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Posted (edited)

Dear all,

today I had a look at the GONG H alpha network monitor (http://halpha.nso.edu/) and figured out that the filaments of the past week have now reached the solar limb and at least the final one of it appeared as wonderful set of prominences. On my left/right-mirrored sketch this is the one in the lower left sector - if I consider the 5 hours difference of daytime compared with the previous sketches correctly. So, here's the sketch:

20190614_Sun_H_alpha_small.JPG.e3e27814eb9e15b9f19b341cd2c38773.JPG

 

Telescope: Lunt LS 50 THa B600 PT
Eyepiece: Celestron X-cel 10mm
Date & Time: June 14th, 2019 / 1500-1530 CEST
Location: home terrace, Dusseldorf region, Germany
Technique: natural vine charcoal on white Hahnemühle Ingres mould-made pastel paper
Size: 24x31cm

Clear (and sunny) skies!

Achim

Edited by acr_astro
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    • By MimasDeathStar
      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!)
    • 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,
      today once again, I did a charcoal sketch of our star bringing us 33°C before lunch time. The solar "north pole" is approximately at the prominence at the top of the sketch. The sketch is right-left flipped. Beside the orientation of the north pole, I figured out on the internet that the bright spot in the left area of the sketch is AR12745. The disc and parts of the prominences is done with natural charcoal. The filament and the dark areas of the prominences are done with the charcoal pen.

      Telescope: Lunt LS 50 THa B600 PT
      Eyepiece: Celestron X-cel 10mm
      Date & Time: July 23rd, 2019 / 1130-1200 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
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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
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      Technique: natural vine charcoal and Koh-i-Nor charcoal pen on white Hahnemühle Ingres mould-made pastel paper
      Size: 24x31cm
      Clear (and sunny) skies!
      Achim
       
       
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