ASCA vs Uraniborg
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ASCA
The Advanced Satellite for Cosmology and Astrophysics (ASCA), known as ASTRO-D before launch, was a Japanese X-ray astronomy satellite launched in February 1993. It was equipped with X-ray telescopes using CCD detectors, making it the first X-ray satellite to use CCD technology for imaging and spectroscopy. ASCA operated until 2000 and made significant contributions to the study of active galactic...
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Uraniborg
Built between 1576 and 1580 on Hven, then under Danish control and now part of Sweden, Uraniborg was Tycho Brahe's Renaissance observatory and research complex. It predates the astronomical telescope. Instead, Brahe used large precision instruments to measure celestial positions with the naked eye, making carefully repeated observation central to his work.
The resulting measurements were among th...
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