Kedi Gözü Nebula Uzaklığının Hesaplanması

Abstract

Distance to the CAT'S Eye Nebula Nebula images are taken from Hubble Telescope- ESA/ESO by Reed et al 1999 between dates of 18 September 1994 - 17 August 1997.Calculations are done in two methods on minor axis of E25 one of them is the Magnification Method ;the image treatment subtracts one image from the other ,the resulting image is called the residual on a computer program and Vt=16,4km/s co=(F-1)d/t are used D=Vt /co and as result of the calculations distance is foundD=977pc age is T=114.106year and the other one is the Radial Fitting Method;the resulting (!)' s from careful fitting of radial profiles along the lines in milli-arcseconds/year and distance is found D=922,85 pc age is T = 112.106 year .