I mentioned this to the OAS, but I forgot to post about this on Utah-Astronomy. I think this is a great deal that might not last much longer. In the Nov/Dec issue of Astronomy Technology Today there is an article about "The Great Atlas of the Sky" (also known as the world's largest printed atlas of the sky). As the article states, "the atlas consists of 296 maps printed on the front and back of 148 pages measuring 17 by 24 inches". Each map covers 15 degrees x 10 degrees, 1.38 inches/degree. It includes 2.4 million stars down to mag. 12. All the reviews I've seen are very positive. It includes a leatherette zip up binder that is 14.5 inches x 19 inches. There is an internal front pocket to hold accessories and a clear plastic sleeve to hold an individual page so you can use it in the field. The atlas weighs in at about 14 pounds. I ordered it from the publisher at www.greatskyatlas.com<http://www.greatskyatlas.com/> for $99 (including shipping) and it took two months to arrive from Poland. It just arrived yesterday and it was well worth the wait. It definitely is a *big* atlas. You can also order it from Agena AstroProducts at http://agenaastro.com/catalogsearch/result/?q=Great+Atlas+of+the+Sky for $139 (including shipping). That is probably the way to get it if you want to have any chance of getting it for the Messier Marathon. I think they are trying to close these out because I believe they used to sell for about $260. Clear skies, Dale.