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主題: GRAVITY Instrument拍銀河中心 作者: peter 於 2016-01-22 21:20:21 GRAVITY Instrument拍銀河中心 == 獵戶座 M42 四合星 Trapezium 內發現 雙星 2016 新發現 http://scitechdaily.com/gravity-instrument-reveals-a-new-double-star/ (http://scitechdaily.com/images/GRAVITY-Discovers-New-Double-Star-in-Orion-Trapezium-Cluster.jpg) http://scitechdaily.com/gravity-instrument-reveals-a-new-double-star/ GRAVITY Instrument Reveals a New Double Star (http://scitechdaily.com/images/GRAVITY.jpg) GRAVITY is an adaptive optics assisted Beam Combiner for the second generation VLTI VLTI 甚大望遠鏡干涉方式調適光學 調適光學 （Adaptive optics，縮寫為AO）是一項使用可變形鏡面矯正因大氣抖動造成光波波前發生畸變，從而改進光學系統性能的技術 2009 先前發現 http://www.space.com/6532-close-shows-binary-stars-orions-heart.html (http://i.space.com/images/i/000/004/152/i02/090402-orion-doublestarB-02.jpg?1292268485) M42 恆星蛋 http://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=18474.0 http://www.shoalhavenastronomers.asn.au/constellations/orion/ 主題: 回覆： 獵戶座 M42 四合星 Trapezium 內發現 雙星 作者: peter 於 2016-01-22 21:25:42 F 星
主題: 回覆： GRAVITY Instrument拍銀河中心 作者: peter 於 2016-06-24 08:13:47 GRAVITY Instrument拍銀河中心
http://astronomynow.com/2016/06/23/successful-first-observations-of-galactic-centre-with-gravity-instrument/ (http://astronomynow.com/wp-content/uploads/2016/06/galactic_centre_s2_1280x1041.jpg) Image of the galactic centre. For the interferometric GRAVITY observations the star IRS 16C was used as a reference star, the actual target was the star S2. The position of the centre, which harbours the (invisible) black hole known as Sgr A*, with 4 million solar masses, is marked by the orange cross. Image credit: ESO/MPE/S. Gillessen et al. |