Davey-T Posted June 26, 2013 Share Posted June 26, 2013 Not much activity on the DS forum so I took this last night between the clouds, not a particularly pretty double but significant as the star used by Friedrich Bessel in 1838 to measure the distance to stars using parallax and hecame up with a distance of 10 lightyears Dave Link to comment Share on other sites More sharing options...
Qualia Posted June 26, 2013 Share Posted June 26, 2013 Grreat image, Dave of Piazzi's Flying Star. I found the double quite a pleasing pair of yellow K type dwarfs. Link to comment Share on other sites More sharing options...
Astro Imp Posted June 27, 2013 Share Posted June 27, 2013 Nice capture, well done. Link to comment Share on other sites More sharing options...
cotterless45 Posted June 27, 2013 Share Posted June 27, 2013 Love these stars, always makes me think of a pair of trapeze artists ! Nice capture,Nick. Link to comment Share on other sites More sharing options...
Tiki Posted June 30, 2013 Share Posted June 30, 2013 Nice image. Bessel also discovered a function (zeroth order Bessel function) that happens to describe the pressure within a white dwarf. I have always hitherto assumed that Bessel was solely a mathematician. Link to comment Share on other sites More sharing options...
Davey-T Posted June 30, 2013 Author Share Posted June 30, 2013 Nice image. Bessel also discovered a function (zeroth order Bessel function) that happens to describe the pressure within a white dwarf. I have always hitherto assumed that Bessel was solely a mathematician.Think there was a bit of math involved as the measured parallax was less than half an arc sec. Dave Link to comment Share on other sites More sharing options...
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