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首页> 外文期刊>Applied optics >Intercalibration of SUMER and CDS on SOHO. II. SUMER detectors A and B and CDS NIS
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Intercalibration of SUMER and CDS on SOHO. II. SUMER detectors A and B and CDS NIS

机译：SUHO和CDS在SOHO上的相互校准。二。 SUMER探测器A和B以及CDS NIS

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摘要

Results of an intercalibration between the extreme-ultraviolet spectrometers Coronal Diagnostic Spectrometer (CDS) and Solar Ultraviolet Measurements of Emitted Radiation (SUMER) on board the Solar and Heliospheric Observatory (SOHO) are reported. The results of the joint observing program Intercal_01 are described, and intercalibration results up to July 2000 of both SUMER detectors A and B and of the CDS Normal Incidence Spectrometer (NIS) are presented. The instruments simultaneously observed radiance of emission lines at the center of the Sun, and three lines have been chosen for intercomparison: He I 584 A, Mg x 609 A, and Mg x 624 A. Initially the same area was observed by both instruments, but, after restrictions were imposed by the scanning mechanism of SUMER in November 1996, the instruments viewed areas of different sizes. Nevertheless, the temporal correlation between the two instruments remained good through June 1998, when contact with the SOHO spacecraft was lost. Until then the CDS instrument measured (33±5)% and (38±7)% (±1σ) higher intensity than SUMER in the He I 584-A line on average for detectors A and B, respectively. Data from SUMER detector B agreed well for Mg x 609 A and Mg x 624 A with the CDS intensities, showing offsets of (2±10)% and (9±15)%, much less than the data of detector A with offsets of (7±8)% and (16±7)% for the two lines, respectively, relative to CDS. Finally, the intercalibration measurements after the loss and recovery of the SOHO spacecraft are analyzed. The data for observations from November 1998 to July 2000 are compared, and it is shown that, although the responses of the instruments have changed, the CDS and the SUMER still perform well, and their temporal correlation is good.
机译：据报道，太阳和日球天文台（SOHO）上的极紫外光谱仪日冕诊断光谱仪（CDS）和太阳紫外线发射辐射测量（SUMER）之间的相互校准结果。描述了联合观测程序Intercal_01的结果，并给出了截至2000年7月SUMER探测器A和B以及CDS正常入射光谱仪（NIS）的相互校准结果。这些仪器同时观察了太阳中心处的发射线的辐射，并且已选择了三条线进行比对：He I 584 A，Mg x 609 A和Mg x 624A。最初，两种仪器都观察到了相同的区域，但是，在1996年11月SUMER的扫描机制施加限制之后，这些仪器可以看到不同大小的区域。然而，直到1998年6月，当与SOHO航天器失去联系时，两种仪器之间的时间相关性仍然保持良好。在此之前，CDS仪器在He I 584-A线中分别平均检测到探测器A和B的强度比SUMER高（33±5）％和（38±7）％（±1σ）。 SUMER检测器B的数据对于CDS强度的Mg x 609 A和Mg x 624 A非常吻合，其偏移为（2±10）％和（9±15）％，远小于检测器A的偏移为相对于CDS，两条线分别为（7±8）％和（16±7）％。最后，分析了SOHO航天器损失和恢复后的相互校准测量。比较了1998年11月至2000年7月的观测数据，结果表明，尽管仪器的响应发生了变化，但CDS和SUMER仍然表现良好，并且它们的时间相关性很好。

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