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	<title>PMAS/PPAK - 版本历史</title>
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	<updated>2026-04-19T16:46:02Z</updated>
	<subtitle>本wiki上该页面的版本历史</subtitle>
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		<id>http://202.127.29.3/~shen/wiki/index.php?title=PMAS/PPAK&amp;diff=2107&amp;oldid=prev</id>
		<title>Shen：​创建页面，内容为“==PMAS== * The potsdam multi-aperture spectrophotometer * PMAS is a unique spectrophotometer, covering a wide wavelength range from 350 nm to 900 nm, its standard IF...”</title>
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		<updated>2016-02-27T03:57:50Z</updated>

		<summary type="html">&lt;p&gt;创建页面，内容为“==PMAS== * The potsdam multi-aperture spectrophotometer * PMAS is a unique spectrophotometer, covering a wide wavelength range from 350 nm to 900 nm, its standard IF...”&lt;/p&gt;
&lt;p&gt;&lt;b&gt;新页面&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==PMAS==&lt;br /&gt;
* The potsdam multi-aperture spectrophotometer&lt;br /&gt;
* PMAS is a unique spectrophotometer, covering a wide wavelength range from 350 nm to 900 nm, its standard IFU, a&lt;br /&gt;
fiber-coupled lens-array, provides 256 spectra and is limit ed to a maximum integral field-of-view of 16×16 arcseconds on the&lt;br /&gt;
sky.&lt;br /&gt;
&lt;br /&gt;
==PPAK==&lt;br /&gt;
*opts for rather large fibers, that can not properly sample the (seeing-limited) image, but collect more flux and allow for wide fields.  * The PPak system consists of a fiber bundle with 331 object, 36 sky and 15 calibration fibers. The object and&lt;br /&gt;
sky fibers collect the light from the focal plane behind a focal reducer lens. The object fibers of PPak, each 2.7 arc-&lt;br /&gt;
seconds in diameter, provide a contiguous hexagonal field-of-view of 74×64 arcseconds on the sky, with a filling&lt;br /&gt;
factor of 60%. The operational wavelength range is from 400 to 900 nm. T&lt;/div&gt;</summary>
		<author><name>Shen</name></author>
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