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Thread: X-ray telescope recently launched

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    Administrator lpetrich's Avatar
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    X-ray telescope recently launched

    First Light for German X-ray Telescope EROSITA - Sky & Telescope
    eROSITA - Wolter telescope

    This X-ray astronomy satellite was launched from Baikonur on July 13, and it is now in a 6-month orbit around Lagrange point L2, about 1.5 million km (0.01 AU) further from the Sun than the Earth. It made its "first light" observations over October 17 - 19, observing the Large Magellanic Cloud. It will soon be starting its main mission: to observe the entire X-ray sky over then next 4 years.

    It uses 7 identical Wolter telescopes in a hexagonal pattern. Each one uses grazing-incidence mirrors to focus the X-rays onto a detector.

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    Quote Originally Posted by lpetrich View Post
    First Light for German X-ray Telescope EROSITA - Sky & Telescope
    eROSITA - Wolter telescope

    This X-ray astronomy satellite was launched from Baikonur on July 13, and it is now in a 6-month orbit around Lagrange point L2, about 1.5 million km (0.01 AU) further from the Sun than the Earth. It made its "first light" observations over October 17 - 19, observing the Large Magellanic Cloud. It will soon be starting its main mission: to observe the entire X-ray sky over then next 4 years.

    It uses 7 identical Wolter telescopes in a hexagonal pattern. Each one uses grazing-incidence mirrors to focus the X-rays onto a detector.
    For the idiots out there, like me... here is a link for Lagrange Points.

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    I wonder why they do not use pinhole cameras for X-rays instead. They can use many small ones that all point in slightly different directions.

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    Administrator lpetrich's Avatar
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    Quote Originally Posted by rjh01 View Post
    I wonder why they do not use pinhole cameras for X-rays instead. They can use many small ones that all point in slightly different directions.
    That has indeed been done: Coded aperture

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