Slovenščina: To je prva risba sončevih peg iz observatorija Mount Wilson, ki jo je Ferdinand Ellerman narisal 4. januarja 1917.
English: This is the first drawing of sunspots from Mount Wilson Observatory by Ferdinand Ellerman, made in January 4, 1917, featuring sunspot groups 516 and 517.
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Captions
First drawing of sunspots from Mount Wilson Observatory, Ferdinand Ellerman, January 4, 1917
Prva risba sončevih peg iz observatorija Mount Wilson, Ferdinand Ellerman, 4. januar 1917