上海天文台 Shanghai Astronomical Observatory Recent VLBI Activities in China Zhi-Qiang Shen (Shanghai Astronomical Observatory) 2009 East Asia VLBI Workshop.

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Presentation transcript:

上海天文台 Shanghai Astronomical Observatory Recent VLBI Activities in China Zhi-Qiang Shen (Shanghai Astronomical Observatory) 2009 East Asia VLBI Workshop March 2009, LG Convention Hall of International Education Building at the Ewha Woman's University, Seoul, Republic of Korea

上海天文台 Shanghai Astronomical Observatory CVN (4 stations+ soft-/hard-ware correlator) 1993(25m) 1987(25m) 2006(50m) 2006(40m) 2006(correlator)

上海天文台 Shanghai Astronomical Observatory Diameter: 25m Band: L, S/X, C, K Recording system: MK2, S2, MK3, MK4, MK5A CVN—Shanghai station (1987)

上海天文台 Shanghai Astronomical Observatory CVN—Urumqi station (1993) Diameter:25m Band: P, L, S/X, C, K ， (also 30 and 49 cm) Recording system: MK2, MK3, MK4, MK5A, K-4 ， K-5

上海天文台 Shanghai Astronomical Observatory CVN—Kunming station (2006) Diameter; 40m (central 25m:full panel; m: mesh) Band : S/X Recording system: MK5A

上海天文台 Shanghai Astronomical Observatory CVN—Beijing station (2006) Diameter:50m (central 30m: full panel; m: mesh) Band: S/X Recording system: MK5A

上海天文台 Shanghai Astronomical Observatory Mobile VLBI—Yunnan (2000) A Mobile VLBI System with 3m antenna was constructed by ShAO for the Xi’an Surveying and Mapping Institute in 2000 which is located in the Yunnan Astronomical Observatory. S/X

上海天文台 Shanghai Astronomical Observatory CVN -VLBI data processing center Hardware correlator (5 stations) Software correlator (4 stations) Output data: CE-1 format FITS format (available?) Software for CE-1 data processing (near real time, in 5 min.)

上海天文台 Shanghai Astronomical Observatory CVN - Application to CE-1 16hX2 48hX1 24hX3 6d 12h 3.5h 2h 调相轨道段地月转移轨道段月球捕获轨道段环月轨道段 Orbit determination: USB+VLBI VLBI tracking distance > 20000km elevation > 5 degree output data: delay, delay rate, angular position output delay time: < 5 minutes

上海天文台 Shanghai Astronomical Observatory VLBI Corrlator Post-data processing Angular position calculations O.D. delayDelay rate VLBI Center Control center in Beijing <5 minutes later VLBI center in Shanghai Dec.R.A.

上海天文台 Shanghai Astronomical Observatory Chang’E National project 回 :returning 绕 :Orbiting CE-1:Oct 2007 (482d/494d) CE-2: ~2010 绕 :Orbiting CE-1:Oct 2007 (482d/494d) CE-2: ~2010 落 :Landing CE-3:~2012 落 :Landing CE-3:~2012

上海天文台 Shanghai Astronomical Observatory Ending of CE-1: March 1, 2009

上海天文台 Shanghai Astronomical Observatory e-VLBI 28 August 2007: Shanghai –Australia & Europe (256Mbps) 17 June 2008: Shanghai –Australia & Japan (512Mbps) 6 January 2009: Shanghai-Urumqi (256Mbps) January 2009: IYA marathon obs. (Asia, Australia, Europe, America)

上海天文台 Shanghai Astronomical Observatory FAST- Five-hundred-meter Aperture Spherical Telescope Unique Karst depression as the site Active main reflector Cable - parallel robot feed support Approved in Nov 2005; Start full construction in 2009; 9 bands from 70MHz to 3 GHz (Expected) 2014

上海天文台 Shanghai Astronomical Observatory New 65m telescope in Shanghai Specs: 8 bands (1.4–43 GHz); active surface; operational at S/X bands before the end of 2012 … (refer to the talk by Bin Li for details)

上海天文台 Shanghai Astronomical Observatory CVN by 2014 Thanks!