Название: The Sharpless Observing Guide Год: 2012 Автор: Reiner Vogel Издательство: Galaxy Map Формат: PDF Размер: 125 Mb Страниц: 556 Язык: Английский The first version of the Observing Atlas did not cover the Sharpless Catalog completely. Rather, it was a selection of those objects where there is at least a marginal chance of visual observation. In the meantime (2012), I expanded the atlas to 305 of the entire 313 objects. I found that many of the small, compact and (on the DSS) bright objects, that often were partly reflection nebula, were difficult to not visible, while several of those very large, dim, low contrast entries of the catalog were relatively easy.
