Night Sky Observer's Guide Volume 1: Autumn and Winter Planispheres In the field of celestial

In the field of celestial calculations

if present

452 Illustrations

and also because software applications like Excel suffer periodic alterations by their suppliers

Night Sky Observer's Guide Volume 1: Autumn and Winter Planispheres In the field of celestialBy George Robert Kepple and Glen Sanner. The original purpose of The Night Sky Observers Guide was to close the gap between observing literature and modern optics. It provided the owner of a medium or large aperture telescope with some idea of what to look for in such instruments both what objects can be seen, and what details may be seen within these objects. Now, with four volumes, it has become an indispensable resource for observing. The Night Sky