Abstract
The Solar X-ray Imager (SXI) was launched 23 July 2001 on NOAA’s GOES-12 satellite and completed post-launch testing 20 December 2001. Beginning 22 January 2003 it has provided nearly uninterrupted, full-disk, soft X-ray solar images, with a continuous frame rate significantly exceeding that for previous similar instruments. The SXI provides images with a 1 min cadence and a single-image (adjustable) dynamic range near 100. A set of metallic thin-film filters provides temperature discrimination in the 0.6 – 6.0 nm bandpass. The spatial resolution of approximately 10 arcsec FWHM is sampled with 5 arcsec pixels. Three instrument degradations have occurred since launch, two affecting entrance filters and one affecting the detector high-voltage system. This work presents the SXI instrument, its operations, and its data processing, including the impacts of the instrument degradations. A companion paper (Pizzo et al., this issue) presents SXI performance prior to an instrument degradation that occurred on 5 November 2003 and thus applies to more than 420000 soft X-ray images of the Sun.
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GOES I-M Data Book: 1996, NASA Goddard Space Flight Center, Greenbelt, MD, U.S.A., p. 196.
National Centers for Environmental Prediction Year End Review, pp. 18, National Centers for Environmental Prediction, Camp Springs, Maryland, 2002.
Bornmann, P. L., Speich, D., Hirman, J., Matheson, L., Grubb, R., Garcia, H., and Viereck, R.: 1996a, Proceeding of SPIE on GOES-8 and Beyond, Vol. 2812, pp. 291–298.
Bornmann, P. L., Speich, D., Hirman, J., Pizzo, V., Grubb, R. N., Balch, C., and Heckman, G.: 1996b, in Proceedings of SPIE on GOES-8 and Beyond, Vol. 2812, pp. 309–319.
Bornmann, P. L., Pizzo, V. J., Speich, D., Cauffman, S., Hooker, R., Russell, K., Wallace, S., Davis, J., Buschmann, S., and Beranek, R.: 1997, AAS Solar Physics Division Meeting.
Cessna, J. R., Hoover, R. B., Grubb, R. N., Orswell, P. L., and Taylor, J. H.: 1983, The GOES X-ray Imager Feasibility Demonstration, NOAA/SEL, Boulder, Colorado, p. 83.
Corder, E. L.: 1994, Proceeding of SPIE on Space Instrumentation and Dual-Use Technology, Vol. 2214, 294.
Davis, J., Bagdigian, D., Buschmann, S., Russell, K., and Wallace, K.: 1994, AIAA Space Programs and Technologies Conference, Huntsville, AL, U.S.A.
Delaboudiniere, J.-P., Artzner, G. E., Brunaud, J., Gabriel, A. H., Hochedez, J. F., Millier, F., Song, X. Y., Au, B., Dere, K. P., Howard, R. A., Kreplin, R., Michels, D. J., Moses, J. D., Defise, J. M., Jamar, C., Rochus, P., Chauvineau, J. P., Marioge, J. P., Catura, R. C., Lemen, J. R., Shing, L., Stern, R. A., Gurman, J. B., Neupert, W. M., Maucherat, A., Clette, F., Cugnon, P., and van Dessel, E. L.: 1995, Solar Phys. 162, 291.
Freeland, S. L. and Handy, B. N.: 1998, Solar Phys. 182, 497.
Gallagher, P. T., Moon, Y.-J., and Wang, H.: 2002, Solar Phys. 209, 171.
Krieger, A., Paolini, F., Vaiana, G. S., and Webb, D.: 1972, Solar Phys. 22, 150.
Martens, P. C. H. and Cauffman, D.: 2002, Multi-Wavelength Observations of Coronal Structure and Dynamics: Yohkoh 10th Anniversary Meeting, Elsevier.
Mewe, R., Gronenschild, E. H. B. M., and Oord, G. H. J. v. d.: 1985, Astron. Astrophys. Suppl. Ser. 62, 197.
Onsager, T., Grubb, R., Kunches, J., Matheson, L., Speich, D., Zwickl, R. W., and Sauer, H.: 1996, Proceedings of SPIE on GOES-8 and Beyond, 2812, 281.
Poppe, B. B.: 2000, EOS Transactions, AGU, p. 322.
Powell, F. R., Keski-Kuha, R. A., Zombeck, M. V., Goddard, R. E., Chartas, G., Townsley, L. K., Moebius, E., Davis, J. M., and Mason, G. M.: 1997, Proceedings of SPIE on Grazing Incidence and Multilayer X-Ray Optical Systems, 3113, 432.
Russell, K., Briscoe, J., Corder, E., Wallace, S., and Chappell, J. H.: 1996, Proceedings of SPIE on GOES-8 and Beyond, 2812, 638.
Singer, H., Matheson, L., Grubb, R.N., A., and Bouwer, D.: 1996, Proceedings of SPIE on GOES-8 and Beyond, 2812, 299.
Smithers, M. E. and Zissa, D. E.: 1996, SPIE 2805, 115.
Tsuneta, S., Acton, L., Bruner, M., Lemen, J., Brown, W., Caravalho, R., Catura, R., Freeland, S., Jurcevich, B., and Owens, J.: 1991, Solar Phys. 136, 37.
Underwood, J. H. and McKenzie, D. L.: 1978, Solar Phys. 60, 311.
Vaiana, G. S. and Rosner, R.: 1978, Annu. Rev. Astron. Astrophys. 16, 393.
Vaiana, G. S., Krieger, A. S., and Timothy, A. F.: 1973, Solar Phys. 32, 81.
Wallace, K. S. and Freestone, K.: 2001, Solar X-Ray Imager (SXI) Operators Handbook, NASA Marshall Space Flight Center, Huntsville, Alabama, p. 497.
Wallace, K. S., Brown, T. A., and Freestone, K. A.: 1998, 17th Digital Avioncis Conference, Seattle, Washington.
Watanabe, T., Kosugi, T., and Sterling, A. C.: 1998, Observational Plasma Astrophysics: Five Years of Yohkoh and Beyond, Klewer Academic Publishers, Dordrecht, Boston, MA.
Zimmermann, F., Zwirn, G., and Davis, M. A.: 2004, Proceedings of SPIE on Telescopes and Instrumentation for Solar Astrophysics, 5171, p. 326.
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Hill, S.M., Pizzo, V.J., Balch, C.C. et al. The NOAA Goes-12 Solar X-Ray Imager (SXI) 1. Instrument, Operations, and Data. Sol Phys 226, 255–281 (2005). https://doi.org/10.1007/s11207-005-7416-x
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DOI: https://doi.org/10.1007/s11207-005-7416-x