Analysis by isophotes of comet C/2007 W1

Analysis by isophotes of coma of comet C/2007 W1 , this image this based in preliminar image processed CCD from "Observatorio Astronomico Vega del Thader"
MPC-J70
El Palmar , Murcia , Spain , your author is J.P.Navarro Pina , the image calculate the velocity expansion of coma based in distances of lines of contours , and calculate column density grains of dust in the coma of the comet C/2007 W1 , the next publication of results for this work .