U.S.-European-Japanese Workshop on Space Cooperation Summary Report (1999) / Chapter Skim
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E: Perspectives on Yohkoh
E: Perspectives on Yohkoh
Pages 33-50
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Appendix E Perspectives on YoLkoh 33
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Many leading Japanese solar physicists had been regular visitors to the United States and had developed collaborative research, Dequently exchanging data as well as ideas. The collaboration drastically expanded when ISAS and NASA simultaneously and independently planned the Solar Maximum Mission (SMM)
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. On-board Instruments HXT ISAS University of Tokyo NAOJ Japan Japan Japan SXT ISAS Japan NAOJ Japan University of Tokyo Japan Lockheed Palo Alto Research Laboratory United States NASA/MSFC United States WBS ISAS Japan Rikkyo University Japan NAOJ Japan BCS ISAS Japan NAOJ Japan Mullard Space Science Laboratory United Kingdom Rutherford Appleton Laboratory United Kingdom National Institute of Standards and Technology United States E.O.
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It is noteworthy here that NASA's AO creaky stated, in accordance with the agreement with ISAS, that U.S. scientists selected Trough this AO process would be designated as co-investigators on Yohkoh by ISAS and would join Me overall Yohkoh mission science team headed by a Japanese project manager and project scientist and Cat some of We U.S.
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partner provided the telescope optics including the CCD camera and its hont-end controller, while the Japanese side was responsible for observation control and on-board data processing software for optimizing the data volume within the limited capacity of the on-board data recorder. 3.2 Mission Operations In the sense that Yohkoh is a Sun-pointing satellite and that all the instruments on board cover the full Sun without any satellite attitude maneuvers, the Yohkoh mission operations are simple in comparison with those of other X-ray astronomy satellites of ISAS.
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In addition to NSSDC, the Solar Data Analysis Center at NASA's Goddard Space Flight Center (NASAJGSFC) has played an important role for making the Yohkoh data easily accessible by those who are not familiar with Yohkoh.
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~ believe this open-data policy has been effective in Online the number of Yohkoh data users beyond the Yohkoh team. This brief paper is not intended to describe fully all aspects of the Yohkoh program.
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and Solar Maximum Mission (SMM) / (Lockheed/Mullard Space Science Laboratory (MSSL)
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Many European groups have used the Yohkoh Data Archive Centre at MSSL. 1.3 Politics The main parties for implementation of the Yohkoh mission were ISAS and NASA.
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Expertise in the use of the Yohkoh instruments is also available at these sites. The "mission science" approach to Yohkoh data exploitation has allowed the broadly based development of appropriate analysis software and its resulting wide availability.
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· Can we learn from the TRACE mission experience on operations in Sun-synchronous orbit? · Can the science team approach remain effective in the more complex Solar-B mission with its greater diversity of instruments?
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NASA provides extensive downlink telemetry coverage via Wallops and Deep Space Network packing stations, but uplink is solely through ISAS's Kagoshima Space Center in Kyushu. The Yohkoh data continue to be valuable, in spite of the ' Oda was one of the pioneers of X-ray astronomy and returned from the Massachusetts Institute of Technology to foster this new branch of astronomy in Japan.
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For those interested, a weekly Web journal written by the SXT2 observers routinely documents the science operations (for example, many of the weekly pages describe aspects of the coronal mass ejection-predict~ng sigmoid patterns discovered with Yohkoh observations)
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A consortium, led by L Cubans of Mullard Space Science Laboratory (MSSL)
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The lack of a guest investigator program probably exacerbated this feeling. In fact, the broad circulation of data analysis software and the wise decision to archive essentially raw data rather than "data products" 3 The BCS observes selected narrow spectral bands in He regions of strong soft X-ray emission lines of S XV, Ca XIX, Fe XXV, and Fe XXVI.
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Within the I-year exclusion rule, the Yohkoh data have been broadly distributed from ISAS, from the Solar Data Analysis Center at NASA Goddard Space Flight Center, and from the European center at MSSL (United Kingdom)
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Second, the movie of routine images itself, but even more so the special data sets covering flares and other activity, form the basis for a great deal of unique Yohkoh research. In the sense that science is fundamentally international and no one nation's property, the solar community worldwide benefits a great deal from the existence of the Yohkoh data.
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