peculiar rotation of, 155.
markings on, 155.
probably not habitable, 155.
Jupiter, easiest planet for amateurs, 141.
seen with 5-inch glass, 141.
satellites, swift motions of, 142.
velocity of planet's equator, 142.
how to see all sides of, 142, 143.
watching rotation of, 143.
eclipses and transits of satellites, 144, 147.
belts and clouds of, 145.
different rates of rotation, 145.
names and numbers of satellites, 146.
Saturn, next to Jupiter in attractiveness, 147.
seen with 5-inch glass, 148.
its moons and their orbits, 148, 149.
polar view of system, 149.
origin of the rings, 150.
Pickering's ninth satellite, 151.
the satellites as telescopic objects, 151.
Venus, her wonderful brilliance, 153.
her atmosphere seen, 153.
Lowell's observations, 153.
Schiaparelli's observations, 154.
her peculiar rotation, 154.
how to see, in daytime, 155.
Neptune and Uranus, 155.
The Sun, 181.
shade glasses for telescopes in viewing, 181.
solar prism, 181.
helioscope, 181.
periodicity of spots, 181.
to see, by projection, 182.
spectroscope for solar observation, 182.
The Telescope:
refractors and reflectors, 2, 8.
aberration (chromatic), 6;
achromatic telescopes, how made, 7.
object glass, 8.
magnifying 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
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 nebulæ, 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
Higher resolution versions of the star maps and lunar charts may be accessed by clicking on the images in the text.
A link to the Index has been added to the Table of Contents
Minor errors and inconsistencies in punctuation and hyphenation have been silently corrected.
The following minor corrections have also been made:
p3: "wil" corrected to "will"
p28: Σ 629, referred to, is not shown on Map No. 1. The location
of m Orionis is marked as Σ 696
p54: "for colors" corrected to "four colors"
p68: "1,065,790,250,000,000" corrected to "1,065,702,500,000,000"
p163-164: "magnical" corrected to "magical"
p179: duplicated word "and" removed
p198: "Map No. 26, 137" added after "Ursa Major"