n MNASSA : Monthly Notes of the Astronomical Society of South Africa - Solar report

Volume 64, Issue 5_6
  • ISSN : 0024-8266



Extracted from text ... mnassa vol 64 nos 5 & 6 106 solar report Solar Report by Jacques van Delft [ jjvdelft1@yahoo.com ] 2005 March - April Figure 1. South African Monthly Sunspot Number (MDF), 2003/04 - 2005/04. This giant sunspot, imaged by J J van Delft, was visible to the naked eye. Three observers submitted sunspot counts to the Section in March and April (Table 1). They are Jacques van Delft (code DEJV) from Wepener in the Freestate, Rob Blore (RBLO) from Hillcrest (Natal) and Werner Coetzee (WCOE) from Bloemfontein (Freestate). The monthly mean daily frequency (MDF) for March is 21.59 and for April is 28.68. Figure 1 shows the MDF from 2003 April to 2005 April. These South African solar observations show that the sunspot ..

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