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acr_astro

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Everything posted by acr_astro

  1. Hello Cozzy and Ruud, thanks for watching and your kind words! Thanks to the others for waching and liking the sketch! Clear skies Achim
  2. 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
  3. acr_astro

    Martini 10" f/5

    my Martini 10" f/5 truss tube dobsonian
  4. From the album: Martini 10" f/5

    ... with truss cover cloth and sun filter
  5. From the album: Martini 10" f/5

    ... without truss cover cloth

    © acr_astro

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