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acr_astro

Solar disc after the thunderstorm

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Posted (edited)

Dear all,

this morning, I woke up because of lightning and thunder here in Dusseldorf area.  After the thunderstorm had moved away towards northeast- and before the next bunch of clouds appeared, I enjoyed the sunshine on the home terrace. To maximize my joy, I set up the H-alpha-telescope to have a look at the solar "weather". 

This time I once again chose natural vine charcoal which is made of the very same atoms than the solar nucleus: carbon. The prominence on the top limb of my sketch was pretty tricky to sketch its set of needle-sharp "rays" in front of the foggy background. Let me share this sketch here as my second contribution to the solar imaging challenge:

20190603_Natural_Charcoal_Sun_H_alpha_small.JPG.f6cb498b5b4392bc6213e4ef81aded3c.JPG

Telescope: Lunt LS 50 THa B600 PT
Eyepiece: Celestron X-cel 10mm
Date & Time: June 3rd, 2019 / 1000-1030 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 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
      Size: 24x31cm
      Clear (and sunny) skies!
      Achim
    • 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!
      Achim
       
       
    • By acr_astro
      Dear all,
      today morning I had a look at the GONG network images on the internet and set up my telescope to have a look at that awesome large prominence on the southeastern limb of our home star. First I concentrated on a sketch of just that wonderful prominence. After that, I created - as usual - a sketch of the full solar disc. I noticed that the prominence already had changed during my sketching time.

       

      Telescope: Lunt LS 50 THa B600 PT
      Eyepiece: TS HR Planetary 7mm
      Date & Time: June 28th, 2019 / 1045-1145 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
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