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The second amplifier released was the Phase Linear 400 with 200 watts per channel. It shared the same distinctive brushed aluminum, dual VU meters front panel style as the 700. It retailed for just under $500. [1] The next product was the Phase Linear 4000 Series Auto-correlation Pre-Amplifier introduced in 1973 and manufactured through 1978.
Gattini-IR is a survey telescope that observes in the near-infrared and started operation at the Palomar Observatory in late 2018. [1] It is planned to survey the entire accessible sky every night. [2] It has a 2048x2048 sensor, and will observe in the J band (1.25um) infrared. [2]
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The Hale Telescope is a 200-inch (5.1 m), f / 3.3 reflecting telescope at the Palomar Observatory in San Diego County, California, US, named after astronomer George Ellery Hale. With funding from the Rockefeller Foundation in 1928, he orchestrated the planning, design, and construction of the observatory, but with the project ending up taking ...
Despite retailers offering holiday discounts earlier than usual this year, US consumers did more shopping on Black Friday than the days leading up to it. In-store and online retail sales saw a 3.4 ...
In the 1930s, Schmidt noted that the corrector plate could be replaced with a simple aperture at the mirror's center of curvature for a slow (numerically high f-ratio) camera. Such a design was used to construct a working 1/8-scale model of the Palomar Schmidt, with a 5° field. [19] The retronym "lensless Schmidt" has been given to this ...
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