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acr_astro

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About acr_astro

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    Star Forming

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    Male
  • Location
    Germany, Dusseldorf area

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  1. Hi all, thanks for the great feedback and all the likes! Clear skies Achim
  2. Dear all, today I did a pastel sketch of the full solar disc in H alpha. Haven't done this for quite some time. Our home star is pretty calm today - only a few small prominences and filaments: Telescope: Lunt LS50THaB600PT Eyepiece: Celestron X-Cel 10mm Date & Time: February 28th, 2021 / 1200-1230 CET Location: home terrace, Dusseldorf region, Germany Technique: reddish Koh-i-Noor Toison d'Or pastels and pastel pens on ebony-coloured Hahnemühle mould-made pastel paper Size: 24 x 31 cm Clear and sunny skies! Achim
  3. Hi all, thanks a ton for your great feedback and the wonderful dozen of likes! Clear skies! Achim
  4. Hi all, thanks for your wonderful repies and for all the likes! I really enjoy shaing my lunar sketches here! Clear skies! Achim
  5. Hi Jeremy, thanks for your reply And thanks to all the others for the likes! Clear skies! Achim
  6. Dear all, tonight I finished the weekend with a tiny sketch of the Eratosthenian-age crater Bullialdus (60km diameter) in the west of Mare Nubium. Apart from Bullialdus you can see Lubiniezky F in the North, Bullialdus A, and B south of the main crater and the tiny Bullialdus E and L in the west of it. Today I once again selected the small size of just 8x12cm for the sketch. Less chalk and less charcoal needed Telescope: Martini 10" f/5 truss-tube Dobsonian Eyepiece: Celestron 25mm eyepieces with Baader Maxbright binoviewer Date & Time: February 21st, 1940/ 2030 CET L
  7. Dear all, at the end of a fruitful astronomy evening yesterday I observed the Hesiodus ray on the floor of crater Hesiodus for the first time And I made a tiny sketch: Telescope: Martini 10" f/5 truss-tube Dobsonian Eyepiece: Explore Scientific 6.7mm/82° Date & Time: February 20th/21st, 2021 / 2345-0015 CET Location: home terrace, Dusseldorf region, Germany Technique: Koh-i-Noor charcoal, whitecoal and chalk blocks and pens on black sketching paper Size: 8x12cm Clear skies Achim
  8. Dear all, yesterday was an excellent sunny day here and an evening with just some thin clouds. So I went for a lunar sketch - this time Clavius: Telescope: Martini 10" f/5 truss-tube Dobsonian Eyepiece: Explore Scientific 6.7mm/82° Date & Time: February 20th, 2021 / 2000-2100 CET Location: home terrace, Dusseldorf region, Germany Technique: Koh-i-Noor charcoal, whitecoal and chalk blocks and pens on black Seawhite of Brighton sketching paper Size: 20x30cm Clear skies Achim
  9. ... and many thanks for the feedback and all the likes! It's a pleasure to share my sketches here! Clear skies Achim
  10. Hi all, thanks a lot for the great feedback and all the likes! Clear skies Achim
  11. Dear all, following the weather forecasts, I got up this morning quite early - even though it's Sunday - to do some lunar sketching at -3°C. I had set up the telescope already yesterday evening so it was perfectly cooled down. The target for this sketch is the strange crater pair Messier and Messier A in Mare Fecunditatis. Messier A is the westerly one with its long rays heading westwards. In contrast to that the ejecta blanket of the oval Messier is spreading more towards north and south. Both Messier and Messier A are Copernican age but most probably do not originate of the same event.
  12. Hi, when sketching the moon, I don't need complete darkness. So usually I just leave the lights on the terrace on. If observing and sketching from somewhere else. I use a light for music stands. Like this one: Clear skies! Achim
  13. Dear all, today between sunset and appearing clouds, I enjoyed half an hour of lunar sketching. This time I decided to have a look at the "Marius hills", the lunar dome area west of crater Marius. I would have appreciated to have a bit more time to add some more details but the clouds came in too fast. Anyway, this is the result: Telescope: Celestron NexStar 127 SLT Eyepiece: Explore Scientific 6.7mm/82° Date & Time: January 25th, 2021 / 1730-1800 CET Location: backyard, Dusseldorf Region, Germany Technique: Koh-i-Noor chalk, extra charcoal and whitecoal pens and pie
  14. Hi all, thanks for the great feedback and the likes! Clear skies and a great Sunday to all of you! Achim
  15. Dear all, yesterday afternoon, the forecasts for the evening were good so I set up the 10" truss-tube Dobsonian on the terrace for cooling down. Actually in the evening the sky wasn't as clear as expected but the cirrostratus luckily did not harm too much. It could have been brighter but anyway ... So I tried my new 2x focal extender with the 10 inch scope for the first time and magnified up to 370x. Seeing was okay and I really enjoyed travelling along the terminator from Plato via Copernicus down to Clavius. For the 10"er the focal extender is really an enhancement when viewing the mo
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