ying power, 11.
mountings, 12.
rules for testing, 13.
image of star in, 14.
image in and out of focus, 14, 15, 17.
astigmatism, 16.

THE END

[Illustration]

1692 S. _Pleasures of the Telescope_ _GARRETT P. SERVISS_

This book says to the amateur, in effect:--"What if you have not all
advantages of clockwork and observatory equipment. You may know
something of the witchery of the heavens even with a little
telescope of three to five inches aperture!" "Pleasures of the
Telescope" is popular in style rather than technical. For setting
forth "the chief attractions of the starry heavens," a complete set
of star-maps is included, showing "all the stars visible to the
naked eye in the regions of sky represented, and in addition some
stars that can only be seen with optical aid." In six chapters these
twenty-six maps are described so plainly that the amateur can
readily find all the interesting star-groups, clusters, and nebulae,
and also the colored or double stars. In the three concluding
chapters the moon and planets receive special consideration. In the
opening chapter the amateur is told how to select and test a glass.

_Booklovers Bulletin._

Transcriber's Note

Minor errors and inconsistencies in punctuation and hyphenation have
been silently corrected.

Some illustrations have been relocated a short distance within the text.

Original page numbers have been retained in the index.

Greek letters, used to identify stars, are replaced with the full name
of the Greek letter, e.g. alpha. Upper case Greek letters are shown by
capitalising the initial letter, e.g. Sigma 1126

A caret (^) is used to represent superscripts, e.g. nu^1 and nu^2

The following minor corrections have also been made:

p3: "wil" has been corrected to "will".

p28: Sigma 629 is not shown on Map No. 1. The location of _m_ Orionis
is marked as Sigma 696. This inconsistency has not been corrected.

p54: "for colors" has been corrected to "four colors".

p68: "1,065,790,250,000,000" has been corrected to
"1,065,702,500,000,000".

p163-164: "magnical" has been corrected to "magical".

p179: A repeated "and" has been removed.

End of Project Gutenberg's Pleasures of the telescope, by Garrett Serviss

*** END OF THIS PROJECT GUTENBERG EBOOK PLEASURES OF THE TELESCOPE ***

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