DiFX at KASI Jongsoo Kim and Taehyun Jung Korea Astronomy and Space Science Institute

Slides:



Advertisements
Similar presentations
Towards the e-APT Tasso Tzioumis ATNF
Advertisements

KVN Multi-frequency Phase Referencing: with the KVN and beyond R.Dodson 1,2 T.H. Jung 1, M. Rioja 2,3 KVN, Korea: ICRAR, UWA, Australia: OAN, Spain.
Computing Infrastructure
ALMA Cycle 2 Capability Jongsoo Kim ALMA EA Korea node.
Study of Magnetic Helicity Injection in the Active Region NOAA Associated with the X-class Flare of 2011 February 15 Sung-Hong Park 1, K. Cho 1,
KVN Recent Progress of Daejeon Correlator Se-Jin Oh Duk-Gyoo Roh, Jae-Hwam Yeom, ChungSik Oh, Jinseung Jung, Dong-Kyu Jung, Youngjoo Yun, A. Miyazaki,
Upgrading Plans of the Chinese SLR Network Upgrading Plans of the Chinese SLR Network Yang FuMin(1), Wu Bin(1), Zhang ZhongPing(1), Guo TangYong(2), Zhao.
Status and future plan of VERA project H.Kobayashi Mizusawa VLBI observatory Mizusawa VLBI observatory National Astronomical Observatory of Japan 2009.July.21.
Japanese VLBI programs, East Asian VLBI Network and Space VLBI;VSOP-2 H.Kobayashi(NAOJ) 2011, Jan., 27 Future of VLBA.
ASKAP Central Processor: Design and Implementation Calibration and Imaging Workshop 2014 ASTRONOMY AND SPACE SCIENCE Ben Humphreys | ASKAP Software and.
East Asian VLBI activities VERA & JVN KVN CVN VSOP/VSOP2.
Ongoing e-VLBI Developments with K5 VLBI System Hiroshi Takeuchi, Tetsuro Kondo, Yasuhiro Koyama, and Moritaka Kimura Kashima Space Research Center/NICT.
Status of the Korean ALMA project Jongsoo Kim Korea Astronomy and Space Science Institute.
CVN software correlator development and its applications Zheng Weimin*, Zhang Juan, Tong Li, Tong Fengxian, Liu Lei, Chen Zhong, Shu Fengchun, Wang Guangli.
VLBI in Africa Michael Bietenholz Hartebeesthoek Radio Observatory.
KVN Current Status of Daejeon Correlator for EAVN Se-Jin Oh and staff of Correlator team of KASI/NAOJ 8 th East Asian VLBI Workshop, 8~10 July
Status of Korean Participation in the SKA Project Minho Choi (KASI) SKA Japan Workshop NAOJ, Mitaka.
Developments for real-time software correlation e-VLBI Y. Koyama, T. Kondo, M. Kimura, M. Sekido, M. Hirabaru, and M. Harai Kashima Space Research Center,
KVN RAS in KOREA Current status. RAFCAP 7 th meeting, Tokyo, 5 June, 2010 Final Goals for Freedom Challenge and Change - Domestic and International Activities.
Wideband Imaging and Measurements ASTRONOMY AND SPACE SCIENCE Jamie Stevens | ATCA Senior Systems Scientist / ATCA Lead Scientist 2 October 2014.
Update on LBA Technical Developments CASS Chris Phillips 11 October 2013.
上海天文台 Shanghai Astronomical Observatory e-VLBI Progress in China Zhang Xiuzhong, team of Chinese VLBI Network Shanghai Astronomical Observatory Chinese.
VLBI2010 Reference antenna for antenna deformations and site ties East Coast Geodetic VLBI Meeting Feb, 2011, Haystack Observatory Bill Petrachenko.
Intraday Variability and Images of Microquasar Cygnus X-3 † Jeong-Sook Kim 1,2 & Soon-Wook Kim 1 1.Astrophysics Research Group, KASI 2.Kyunghee University.
SKA Korea Industry Working Group Bong Won Sohn (KASI) SKA Korea Industry Discussion Group.
KVN RAS in KOREA Current status. KVN Basic Concepts Our DUTY Registration our RA sites  Helping peoples for Better Lives Our RIGHT protect RAS from.
2009 East Asia VLBI Workshop (2009 March 18-20, Seoul) Multi-frequency Timing and Rapid Spectral Evolution of Microquasars Soon-Wook Kim Astrophysics Research.
E-VLBI over TransPAC Masaki HirabaruDavid LapsleyYasuhiro KoyamaAlan Whitney Communications Research Laboratory, Japan MIT Haystack Observatory, USA Communications.
Design of a Software Correlator for the Phase I SKA Jongsoo Kim Cavendish Lab., Univ. of Cambridge & Korea Astronomy and Space Science Institute Collaborators:
Closing Remarks Mar , 2009 LG Convention Hall, Ewha Womans Univ.
Eleventh Synthesis Imaging Workshop Socorro, June 10-17, 2008 THE VLBA SENSITIVITY UPGRADE Craig Walker, NRAO.
1 Gbps Disk-Based VLBI Observation for Future East Asia VLBI Observations Kiyoaki Wajima 18 March 2009 동아시아 VLBI 워크샵 Yamaguchi University Introduction.
E-VLBI and End-to-End Performance Masaki HirabaruYasuhiro KoyamaTetsuro Kondo NICT KoganeiNICT Kashima
Possible Engineering Support for Dual Polarization and Ultra Wide Band Observation with EAVN N. Kawaguchi National Astronomical Observatory East Asia VLBI.
YONSEI UNIVERSITY Korea Emme Users’ Conference 21 April 2010 Prof. Jin-Hyuk Chung.
Japanese VLBI activities and East Asian VLBI Network H.Kobayashi(NAOJ)November,23, South African SKA, Postgraduate Bursary Conference.
The Progress Report for KVN Construction Seog-Tae Han and KVN staffs Korea Astronomy and Space Science Institute March18 th 2009.
Status and future of East Asia VLBI network H.Kobayashi(NAOJ) East Asia VLBI
Мulti-frequency VLA observations of M87. Observations’ parameters Test VLA observations (configuration D) of M87 (RA=12:28, Dec=12:40) took place on November.
IYA Korea ‘09 1 IYA 2009 Plan in Korea 3 March ESO Young-Soo KIM, Young Sook Ahn, DongJoo Lee, Young-Woon Kang, Seok Jae Park KASI (Korea Astronomy.
Multi-frequency Phase Referencing VLBI Observation - Phase Referenced Image - Tae Hyun Jung, Bong Won Sohn, Hideyuki Kobayashi, Tetsuo Sasao, Tomoya Hirota,
KVN V LBI E xtragalactic Co mpact R adio S ource S urvey Lee, Sang-Sung 2009EastAsiaVLBIWorkshop 2009EastAsiaVLBIWorkshop.
A Global 86 GHz VLBI Survey of Compact Radio Sources Sang-Sung Lee MPIfR In collaboration with A.P. Lobanov, T.P. Krichbaum, A. Witzel, J.A. Zensus (MPIfR,
Demonstration of 16Gbps/station broadband-RF VLBI system Alan Whitney for the VLBI2010 development team MIT Haystack Observatory 22 October st Intl.
Prof. Steven Tingay (ICRAR, Curtin University) Workshop on East-Asian Collaboration on the SKA Daejeon, Korea, November 30 – December 2, 2011 A long baseline.
Scattering and Scintillation in Radio Astronomy 1 The dual-frequency calibration of ionosphere influence in VLBA data processing Andrey Chuprikov.
E. Momjian, T. Ghosh, C. Salter, & A. Venkataraman (NAIC-Arecibo Observatory) eVLBI with the 305 m Arecibo Radio Telescope ABSTRACT Using the newly acquired.
VERA and Japan-Korea collaboration Mareki Honma Mizusawa VLBI observatory, NAOJ.
Sang Chul Kim ( 김상철, 金相哲 ) Korean Virtual Observatory Early-version of the KADC/KVO DB System 2003 Nov ( 水 - 金 ) Korea Astronomy.
Possible eVLBI connection between Eastern Asian Observatories Noriyuki KAWAGUCHI National Astronomical Observatory, Japan eVLBI Workshop
Space-VLBI Multi-frequency Capabilities A. G. Rudnitskiy, S. F. Likhachev, V. I. Kostenko A. S. Andrianov, I. A. Girin Astro Space Center of Lebedev Physical.
Shatskaya M, Abramov A., Fedorov N., Kostenko V., Likhachev S., Seliverstov S., Sichev D. Astro Space Center, P. Lebedev Physical Institute, RAS, Moscow,
VLBI Developments in Australia ASTRONOMY AND SPACE SCIENCE Chris Phillips| LBA Lead Scientist 11 November 2014.
About JVN about JVN Status Status Results Results Future plans Future plans Japanese VLBI Network (JVN): recent results and future plans for EAVN Kenta.
1 Date Uniboard Application for Korean VLBI Network (KVN) Jae-Hwan Yeom, MiYoung Jung & Bong Won Sohn.
The East-Asian VLBI Network: Synergy between FAST and EAVN W AJIMA, Kiyoaki ( 輪島 清昭, KASI) (on behalf of the EAVN Tiger Team) 2015 年 7 月 31 日 FAST 早期科学国际研讨会.
VGOS GPU Based Software Correlator Design Igor Surkis, Voytsekh Ken, Vladimir Mishin, Nadezhda Mishina, Yana Kurdubova, Violet Shantyr, Vladimir Zimovsky.
Korea Sales Performance
Korea Astronomy and Space Science Institute
EVLA Availability - or - When Can I Use It?
Study on Prototype KVN high-speed Recorder Development using FirmOS Jae-Hwan Yeom, Se-Jin Oh, Duk-Gyoo-Roh, Dong-Kyu Jung, Chungsik Oh, Hyo-Ryoung Kim,
e-VLBI Deployments with Research Internet
Radio Astronomy in Japan
Simultaneous Multi-Frequency Obs. -Phase Compensation, mm-VLBI
SKA-Related Activities in Korea
(National Astronomical Observatory of Japan)
Mareki Honma (NAOJ) On behalf of EATING VLBI collaboration
Shanghai VLBI Center Activities
K computer RIKEN Advanced Institute for Computational Science
K computer RIKEN Advanced Institute for Computational Science
Presentation transcript:

DiFX at KASI Jongsoo Kim and Taehyun Jung Korea Astronomy and Space Science Institute

YonseiUlsanTamna Korean VLBI Network  3 × 21m Antennas  Maximum Baseline : 480 km  4 Channel (22/43/86/129 GHz), LCP/RCP  Simultaneous Observing System  Multi-Frequency Phase Referencing  Correlators: Daejeon(HW), DiFX(SW )

22/43/86/129 GHz Receivers - 3 -

Performance tests East Sea Korea : KVN antenna Yonsei (Seoul), Ulsan, Tanma (Jeju) Japan : VERA antenna Mizusawa, Ishigaki, Iriki,Ogasawara

Improved image (22GHz) of M87 by KVN+VERA Total flux : 1.18 Jy Peak flux : 1.04 Jy/beam Image rms : 4 mJy/beam Total flux : 1.55 Jy Peak flux : 1.08 Jy/beam Image rms : 2 mJy/beam

Daejeon

DiFX system one difx server: 16 cores (E5-2690), 64GB memory, CentOS 6.3 Storage: 120TB+80TB RAID 6, direct attached to server Mark5 unit: Mark 5B+(SDK8.3), 5C(SDK9.2), direct connection to server with 1GE

Operations Just started normal operations for KVN only following standard procedure –Fuse or mk5cp –vex2difx –calcif2 –mpifxcorr –difx2mark4, fourfit –difx2fits

Example

Performance mk5cp: ~ 0.51 Gbit/sec mpifxcorr with 16 cores: ~24 hours correlation time for a 12 hour 1Gbps observation with 3 KVN antennas

Future Plan “native” Mark5 correlation infiniband upgrade Correlation for KVN+VERA –Require copy of VERA 2000 tape to Mark 5 diskpack or storage

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.