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Sun sketch July 11


MZack

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A few hours of sunshine in the UK near London this morning. Sketch of the large central group 3738. 70mm Achromatic x90 plus a full sketch of the disk x50

IMG_2107.jpeg

IMG_2108.jpeg

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6 hours ago, Gonariu said:

Sketch very beautiful. What is the focal length of your 70mm?

Thank you. It’s 900mm. A 1979 UK Irving Refractor. Achromatic lens is actually from the 1940’s

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