A Beginner's Star-Book; An Easy Guide to the Stars And to the Astronomical Uses of the Opera-Glass, the Field-Glass And the Telescope
A Beginner's Star-Book; An Easy Guide to the Stars And to the Astronomical Uses of the Opera-Glass, the Field-Glass And the Telescope
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In our eReader you can find the full English version of the book. Read A Beginner's Star-Book; An Easy Guide to the Stars And to the Astronomical Uses of the Opera-Glass, the Field-Glass And the Telescope Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Beginner's Star-Book; An Easy Guide to the Stars And to the Astronomical Uses of the Opera-Glass, the Field-Glass And the Telescope
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This piece of soft leather or cloth may be held by a few stitches or by a couple of tight rubber bands.
This type of telescope is usually made in sections or joints, the smaller sliding down into the larger when the instrument is closed. The instrument must, of course, be extended or drawn out for use in observation — hence the name "draw-telescope" is often applied to it.
A three-draw telescope or a four-draw telescope is one having three or four, as the case may be, of these several sections.... The focusing is accomplished by sliding in or out the Unstrumcntci of ©btjcrvation loi section containing the eyepiece. Telescopes of this type will not, of course, give the satisfaction afforded by instruments regularly mounted on tripod stands and provided with one or more regular astronomical eyepieces, but they are inexpensive, easily carried about, and capable — within their range — of giving a great deal of pleasure to the beginner.
Their prices range from $5 to $50 according to quality and size.
What to read after A Beginner's Star-Book; An Easy Guide to the Stars And to the Astronomical Uses of the Opera-Glass, the Field-Glass And the Telescope?
You can find similar books in the "Read Also" column, or choose other free books by Murphy, Edgar Gardner, 1869-1913 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This piece of soft leather or cloth may be held by a few stitches or by a couple of tight rubber bands.
This type of telescope is usually made in sections or joints, the smaller sliding down into the larger when the instrument is closed. The instrument must, of course, be extended or drawn out for use in observation — hence the name "draw-telescope" is often applied to it.
A three-draw telescope or a four-draw telescope is one having three or four, as the case may be, of these several sections.... The focusing is accomplished by sliding in or out the Unstrumcntci of ©btjcrvation loi section containing the eyepiece. Telescopes of this type will not, of course, give the satisfaction afforded by instruments regularly mounted on tripod stands and provided with one or more regular astronomical eyepieces, but they are inexpensive, easily carried about, and capable — within their range — of giving a great deal of pleasure to the beginner.
Their prices range from $5 to $50 according to quality and size.
What to read after A Beginner's Star-Book; An Easy Guide to the Stars And to the Astronomical Uses of the Opera-Glass, the Field-Glass And the Telescope?
You can find similar books in the "Read Also" column, or choose other free books by Murphy, Edgar Gardner, 1869-1913 to read onlineMoreLess
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