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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">美国宇航局红外天文台开始对宇宙星系进行观测 </h1> <p class="xg1"> 时间：2016-2-23 10:14<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(2028)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4056&idtype=aid" title="查看全部评论"><em id="_commentnum">6</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>美国宇航局SOFIA项目科学家帕梅拉-马坎称循环4计划将超过550小时的飞行观测时间，我们将研究各种天体，包括小行星、行星、太阳系中的彗星等</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div>据国外媒体报道，美国宇航局同温层红外线天文台（SOFIA）从加州起飞，开始对行星、小行星、恒星以及宇宙星系进行观测。</div><div style="text-align: center;"><p><a href="data/attachment/portal/201602/23/102759lu3yxmuf3ffuqr34.jpg" target="_blank"><img src="data/attachment/portal/201602/23/102759lu3yxmuf3ffuqr34.jpg"></a></p></div><div><br></div><div><div>同温层红外线天文台 （SOFIA）是NASA、德国航空太空中心（DLR, Deutsches Zentrum für Luft- und Raumfahrt e.V.）和大学太空研究协会（URSA）共同合作，在1996年由NASA授权优先发展的计划。此次<span style="line-height: 25.2px;">项目，将天文台安装在波音客机上，在同温层飞行对宇宙进行研究。</span></div><div><br></div><div>波音客机是改造的机型，<span style="line-height: 1.8em;">是由一架曾在泛美航空和联合航空的商业航线上服务过的波音747SP 改装上2.5 米直径反射望远镜，在41,000英尺（约12,496米）的高空进行红外线天文学研究的飞机。S</span>OFIA在2004年8月18日至19日进行了在地面上的<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>，观察了北极星的影像。<span style="line-height: 25.2px;">这架波音747SP在今年2月3日开始第四次科学航班，这个阶段被命名为循环4，观测时间长达1年。</span></div><div><span style="line-height: 1.8em;"><br></span></div><div><span style="line-height: 1.8em;">他的能力使它几乎能在地球大气层内所有的水蒸气之上飞行（能够观察到一些被大气层拦阻不能被地基设备观察到的红外波长），并且飞行至地球表面上的任何一点进行观测。从外面看，这架望远镜像是在机身的机尾附近的大门，初期将装置九套观测仪器，进行在红外线天文学波长1-655微米，和在波长0.3制1.1微米的高速光学天文学观测。</span></div></div><div><br></div><div>改装上的2.5米的反射望远镜，使用的镜片是与多数的红外望远镜相同，超大的2.7米的主镜。虽然是安置在飞机上最大的望远镜，但相较于地基研究用的望远镜，它仍然只是中型的尺寸。这个计划在莫菲特联邦机场（Moffett Federal Airfield）有自己的<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">镀膜</a>设备，可以快速的重新镀镜。DLR负责整架望远镜的组装（NASA负责飞机），望远镜的制造被转包给欧洲的产业界（德国制造望远镜，法国制造主镜，副镜则是瑞士制造）。每一次的任务都可以更换与望远镜连结的科学仪器。有两组是一般目的通用的仪器，另外也能未特别的研究设计和建造专用的仪器。望远镜将安置在一个天窗内，暴露于高速动荡的风中；另一方面，飞机的振动和运动也都会增加观测上的困难。在飞机起飞之前必须先预冷望远镜所在的货舱，以便能与外面的温度相同（避免温度造成的变形）。为了避免湿气和结露，在冷却之前货舱还必须灌满氮气。</div><div><br></div><div>美国宇航局SOFIA项目科学家帕梅拉-马坎称循环4计划将超过550小时的飞行观测时间，我们将研究各种天体，包括小行星、行星、太阳系中的彗星等，太阳系之外的天体包括系外行星系统的演化、星际介质和星际化学、银河系中心区域以及活动星系核等。目前同温层红外线天文台主要对红外波段进行观测，还有可见光、X射线、无线电波等。太空中许多天体比如新生恒星会发出除了可见光、红外等其他波段的光。</div><div><br></div><div>SOFIA科学任务运营总监埃里克-扬称我们还发现了在1.7亿光年外隐藏在浓密尘埃云背后的超大质量黑洞，来自亚利桑那大学、德克萨斯大学、圣安东尼奥大学的研究人员以及位于巴尔的摩太空望远镜的科学家小组参与了本次观测。</div><div><p style="text-align: center;"><a href="data/attachment/portal/201602/23/101457q9bv8w8c8vsp8ysv.jpg" target="_blank"><img src="data/attachment/portal/201602/23/101457q9bv8w8c8vsp8ysv.jpg"></a></p><p class="MsoNormal" style="text-align: center;"><span style="mso-spacerun:'yes';font-family:宋体;font-size:10.5000pt;mso-font-kerning:0.0000pt;">欢迎关注光电<a 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type="hidden" name="referer" value="portal.php?mod=view&aid=4056#comment" /> <input type="hidden" name="id" value="0" /> <input type="hidden" name="idtype" value="" /> <input type="hidden" name="aid" value="4056"> <input type="hidden" name="formhash" value="234d4a1a"> <input type="hidden" name="replysubmit" value="true"> <input type="hidden" name="commentsubmit" value="true" /> <p class="ptn"><button type="submit" name="commentsubmit_btn" id="commentsubmit_btn" value="true" class="pn"><strong>评论</strong></button></p> </form> <a name="comment_anchor_4466"></a> <dl id="comment_4466_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(4466, '4056');">引用</a> </span> <a href="http://club.oecr.com/space-uid-162419.html" class="xi2 xw1" c="1">24122650</a> <span class="xg1 xw0">2016-2-28 18:04</span> </dt> <dd>转发微博</dd> </dl><a name="comment_anchor_4264"></a> <dl id="comment_4264_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(4264, '4056');">引用</a> </span> <a href="http://club.oecr.com/space-uid-54470.html" class="xi2 xw1" c="1">3geboy</a> <span class="xg1 xw0">2016-2-23 13:30</span> </dt> <dd>前排支持下了哦~</dd> </dl><a name="comment_anchor_4262"></a> <dl id="comment_4262_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(4262, '4056');">引用</a> </span> <a href="http://club.oecr.com/space-uid-97441.html" class="xi2 xw1" c="1">hzw0305</a> <span class="xg1 xw0">2016-2-23 12:30</span> </dt> <dd>这里评论可以刷光电贝吗？</dd> </dl><a name="comment_anchor_4261"></a> <dl id="comment_4261_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(4261, '4056');">引用</a> </span> <a href="http://club.oecr.com/space-uid-42254.html" class="xi2 xw1" c="1">heroic20</a> <span class="xg1 xw0">2016-2-23 12:00</span> </dt> <dd>我记得好像是2001年开始搞的吧。</dd> </dl><a name="comment_anchor_4259"></a> <dl id="comment_4259_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(4259, '4056');">引用</a> </span> <a href="http://club.oecr.com/space-uid-98982.html" class="xi2 xw1" c="1">zengbo66</a> <span class="xg1 xw0">2016-2-23 11:00</span> </dt> <dd>来这里学知识，交朋友，卖产品，真的挺好。</dd> </dl><a name="comment_anchor_4258"></a> <dl id="comment_4258_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(4258, '4056');">引用</a> </span> <a href="http://club.oecr.com/space-uid-67947.html" class="xi2 xw1" c="1">光学采购网</a> <span class="xg1 xw0">2016-2-23 10:30</span> </dt> <dd>谢谢分享这么好的文章。</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div 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