Among the most widespread astronomical instruments are the 60mm refractors and the popular "115/900" reflectors.
This book is particularly intended for the owners of this type of telescope.
The book consist of deep-sky observation techniques, which will enable the reader to use the description of more than 250 celestial objects, classified by constellation.
Features : 368 pages, 15 X 25 cm, offset NB
Price in France: 17 Euros
Yes, unfortunately, this book is in the French language...
Nevertheless, if you are interested, write to me.
(click on the cover to have an enlarged image)