Half hours with the Telescope
PREFACE.
The object which the Author and Publisher of this
little work have proposed to themselves, has been the production,
at a moderate price, of a useful and reliable guide to the amateur
telescopist.
Among the celestial phenomena described or figured in this
treatise, by far the larger number may be profitably examined with
small telescopes, and there are none which are beyond the range of
a good 3-inch achromatic.
The work also treats of the construction of telescopes, the
nature and use of starmaps, and other subjects connected with the
requirements of amateur observers.
R.A.P.
CHAPTER I.
