Hi, Pete. Thanks for your reasoned response. I happen to have the Uranometria Atlases so I do, in fact, know what preceded what. I also have a few other Wil Tirion Atlases and am completely familiar with the progression of his marvellous work. As for the Millennium being merely a copy of the Uranometria I would say that the Mill is a complete re-thinking of the Urano from the ground up. A patient reading of the preface, foreword etc. of the Millennium will prove this. And for the notation of doublestars it is absolutely NOT a copy. Urano does not indicate separation or P.A. of double stars or the number of components if multiple like the Millennium does - it merely puts a horizontal line through stars to indicate they are not single. Hardly a copy. I will continue to gush.
Clear skies, Dave