Improving sunspot records: The observations by M. Hell revisited

Observatory

Volumn 127, Issue 1199, 2007, Pages 221-224

  Vaquero, J M ^a   Gallego, M C ^a   Sanchez Bajo F ^a  

^a UNIVERSITY OF EXTREMADURA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 34548147730     PISSN: 00297704     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Review

References (12)

1. I. G. Usoskin & G. A. Kovaltsov, Solar Phys., 224, 37, 2004.
2. J. M. Vaquero, astro-ph/0702068 [Adv. Space Res., in press].
3. D. V. Hoyt & K. H. Schatten, Solar Phys., 179, 189, 1998.
4. V. Letfus, Solar Phys., 184, 201, 1999.
5. D. H. Hathaway, R. M. Wilson & E. J. Reichmann, Solar Phys., 211, 357, 2002.
6. R. Wolf, Mitth. über die Sonnenflecken, 1, 114, 1857.
7. M. Hell, Observationes Astronomicae ab Anno 1717 ad Annum 1752 Pekini Sinarum Factae, Vindobonae, 1768.
8. I. Kegler & A. Pereira, Phil. Trans. XXXVII, 420, 179, 1733.
9. I. Kegler & A. Pereira, Memorias de Mathematica e Phisica da Academia R. das Sciencias de Lisboa, 2, 36, 1799.
10. J. M. Vaquero, Solar Phys., 219, 379, 2004.
11. J. M. Vaquero, R. M. Trigo & M. C. Gallego, Astron. Nachr., 326, 112, 2005.
12. J. M. Vaquero et al., Solar Phys., 240, 165, 2007.