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Sunspot Records by Antonio Colla Just After the Dalton Minimum
Solar Physics ( IF 2.8 ) Pub Date : 2020-08-01 , DOI: 10.1007/s11207-020-01678-0
V. M. S. Carrasco , C. Bertolin , F. Domínguez-Castro , L. de Ferri , M. C. Gallego , J. M. Vaquero

Antonio Colla was a meteorologist and astronomer who made sunspot observations at the Meteorological Observatory of the Parma University (Italy). He carried out his sunspot observations from 1830 to 1843, just after the Dalton Minimum. We have recovered 71 observation days for this observer. Unfortunately, many of these records are qualitative and we could only obtain the number of sunspot groups and/or single sunspots from 25 observations. However, we highlight the importance of these records because Colla is not included in the sunspot group database as an observer and, therefore, neither are his sunspot observations. With regards to the number of groups, the sunspot observations made by Colla are similar to those of several observers of his time. For common observation days, only Stark recorded significantly more groups than Colla. Moreover, we have calculated the sunspot areas and positions from Colla’s sunspot drawings concluding that both areas and positions recorded by this observer seem unreal. Therefore, Colla’s drawings can be interpreted such as sketches showing reliable information on the number of groups but the information on sunspot areas and positions should not be used for scientific purposes.

中文翻译:

安东尼奥·科拉的太阳黑子记录就在道尔顿最小值

安东尼奥·科拉 (Antonio Colla) 是一名气象学家和天文学家,曾在帕尔马大学(意大利)气象台进行太阳黑子观测。他在 1830 年至 1843 年期间进行了他的太阳黑子观测,就在道尔顿极小期之后。我们已经为该观察者恢复了 71 个观察日。不幸的是,这些记录中有许多是定性的,我们只能从 25 次观测中获得太阳黑子群和/或单个太阳黑子的数量。然而,我们强调了这些记录的重要性,因为 Colla 没有作为观察者被包括在太阳黑子组数据库中,因此,他的太阳黑子观测也没有。从群体的数量来看,科拉对太阳黑子的观测与他同时代的几个观测者的观测相似。对于常见的观察日,只有 Stark 记录的组数明显多于 Colla。而且,我们已经根据 Colla 的太阳黑子图计算了太阳黑子的面积和位置,得出的结论是,这位观察者记录的面积和位置似乎都不真实。因此,Colla 的图纸可以解释为草图,显示有关组数的可靠信息,但有关太阳黑子区域和位置的信息不应用于科学目的。
更新日期:2020-08-01
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