天文学是一门涉及外星观测的自然科学。该领域研究近地物体和其他天文现象,以帮助找到宇宙起源的答案,了解我们的太阳系和星系,并发现物质定律。天文学使用各种成像技术,例如太阳成像和光谱学,来研究太阳的活动和地球上方发生极光的大气层等领域。基于图像传感器和相机的成像技术在世界各地被用于望远镜中。
大型望远镜用于观测外行星和原行星系,旨在寻找生命迹象,并通过直接测量宇宙膨胀来研究暗能量的性质。
全世界许多地方均已安装了各种大型望远镜,并持续用于各种观测,例如夏威夷大岛莫纳克亚山顶的斯巴鲁望远镜、三十米望远镜 (TMT)、凯克望远镜、双子座望远镜;智利阿塔卡马沙漠的阿尔玛望远镜;加那利群岛拉帕尔马岛上的加纳利大望远镜等。
通过自适应光学方法,系统可立即校正受大气波动干扰的入射光的波前。这种大气湍流可以移动入射光(想想星星闪烁),因此使传感器上的图像模糊。自适应光学使天文学家能够校正这种情况,并在望远镜的性能范围内获得最清晰的图像。为了执行实时和高精度的波前校正,此用途中的相机必须具有高速和高分辨率。此外,由于波前校正是使用激光人工星在极暗态下执行的,因此相机还需要具备高灵敏度。
*由京都大学天文系 Kodai Yamamoto 博士友情提供
太阳对地球有很大的影响。在我们努力了解地球和太阳之间的因果关系时,对太阳活动加以成像和了解(例如研究太阳黑子和磁场运动生成耀斑的情况)变得越来越重要。为了密切跟踪太阳耀斑的内部结构及其随时间的变化,需要同时达到高分辨率、高速和高动态范围的探测器。
上层大气是 80 至 400 km 高处的大气层。该高度对应于地球大气和外太空之间的边界区域。大气的这一部分处于离子化的等离子体状态。由于等离子体与大气之间的相互作用,在南北极产生了极光。这一高度会在夜间产生微弱的大气光。高灵敏度、高分辨率和高速相机可以测量上层大气的动态。
*由名古屋大学宇宙地球环境研究所 (ISEE) Yoshizumi Miyoshi 博士友情提供
滨松光子学株式会社一直为天文领域提供各种产品,例如用于大型望远镜的图像传感器和用于天文卫星的红外探测器。以下是我们与天文学界合作的示例。
斯巴鲁望远镜是夏威夷莫纳克亚山顶的一个超大望远镜。它是世界上最强大的望远镜之一,用于测量宇宙膨胀和暗能量的发展历程,并直接观测暗物质的分布。
我们的 CCD 图像传感器用于斯巴鲁望远镜的主焦点相机。CCD 传感器具有独特的全耗尽结构,在长波长处具有高灵敏度,因此能够以高分辨率观测传统传感器无法观测到的各种微光物体。
It looks like you're in the . If this is not your location, please select the correct region or country below.
You're headed to Hamamatsu Photonics website for (Chinese). If you want to view an other country's site, the optimized information will be provided by selecting options below.
In order to use this website comfortably, we use cookies. For cookie details please see our cookie policy.
This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in this cookie policy. By closing the cookie warning banner, scrolling the page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.
Hamamatsu uses cookies in order to enhance your experience on our website and ensure that our website functions.
You can visit this page at any time to learn more about cookies, get the most up to date information on how we use cookies and manage your cookie settings. We will not use cookies for any purpose other than the ones stated, but please note that we reserve the right to update our cookies.
For modern websites to work according to visitor’s expectations, they need to collect certain basic information about visitors. To do this, a site will create small text files which are placed on visitor’s devices (computer or mobile) - these files are known as cookies when you access a website. Cookies are used in order to make websites function and work efficiently. Cookies are uniquely assigned to each visitor and can only be read by a web server in the domain that issued the cookie to the visitor. Cookies cannot be used to run programs or deliver viruses to a visitor’s device.
Cookies do various jobs which make the visitor’s experience of the internet much smoother and more interactive. For instance, cookies are used to remember the visitor’s preferences on sites they visit often, to remember language preference and to help navigate between pages more efficiently. Much, though not all, of the data collected is anonymous, though some of it is designed to detect browsing patterns and approximate geographical location to improve the visitor experience.
Certain type of cookies may require the data subject’s consent before storing them on the computer.
This website uses two types of cookies:
This website uses cookies for following purposes:
Cookies help us help you. Through the use of cookies, we learn what is important to our visitors and we develop and enhance website content and functionality to support your experience. Much of our website can be accessed if cookies are disabled, however certain website functions may not work. And, we believe your current and future visits will be enhanced if cookies are enabled.
There are two ways to manage cookie preferences.
If you don’t want to receive cookies, you can modify your browser so that it notifies you when cookies are sent to it or you can refuse cookies altogether. You can also delete cookies that have already been set.
If you wish to restrict or block web browser cookies which are set on your device then you can do this through your browser settings; the Help function within your browser should tell you how. Alternatively, you may wish to visit www.aboutcookies.org, which contains comprehensive information on how to do this on a wide variety of desktop browsers.
Occasionally, we may use internet tags (also known as action tags, single-pixel GIFs, clear GIFs, invisible GIFs and 1-by-1 GIFs) at this site and may deploy these tags/cookies through a third-party advertising partner or a web analytical service partner which may be located and store the respective information (including your IP-address) in a foreign country. These tags/cookies are placed on both online advertisements that bring users to this site and on different pages of this site. We use this technology to measure the visitors' responses to our sites and the effectiveness of our advertising campaigns (including how many times a page is opened and which information is consulted) as well as to evaluate your use of this website. The third-party partner or the web analytical service partner may be able to collect data about visitors to our and other sites because of these internet tags/cookies, may compose reports regarding the website’s activity for us and may provide further services which are related to the use of the website and the internet. They may provide such information to other parties if there is a legal requirement that they do so, or if they hire the other parties to process information on their behalf.
If you would like more information about web tags and cookies associated with on-line advertising or to opt-out of third-party collection of this information, please visit the Network Advertising Initiative website http://www.networkadvertising.org.
We use third-party cookies (such as Google Analytics) to track visitors on our website, to get reports about how visitors use the website and to inform, optimize and serve ads based on someone's past visits to our website.
You may opt-out of Google Analytics cookies by the websites provided by Google:
https://tools.google.com/dlpage/gaoptout?hl=en
As provided in this Privacy Policy (Article 5), you can learn more about opt-out cookies by the website provided by Network Advertising Initiative:
http://www.networkadvertising.org
We inform you that in such case you will not be able to wholly use all functions of our website.
Close