Guide to Observing Deep-Sky Objects: A Complete Global Resource for Astronomers - ISBN:0387728503

Guide to Observing Deep-Sky Objects: A Complete Global Resource for Astronomers

Date: 30 April 2011, 10:29

Free register and download UseNet downloader, then you can FREE Download from UseNet.

Download without Limit " Guide to Observing Deep-Sky Objects: A Complete Global Resource for Astronomers " from UseNet for FREE!

Note: CD-ROM is not included.
Guide to Observing Deep-Sky Objects is a reference book for amateur astronomers. It contains, for each constellation, a star chart showing the Bayer labels, a table for many of the stars in the constellation, along with their positions and magnitudes, and a table of the deep-sky objects in the constellation, with relevant observational data. Facing pages provide unique year-long graphs that show when the constellation is visible in the sky, allowing the user to quickly determine whether a given constellation can be seen, and when the best time to see it will be.
A major feature is an included CD-ROM containing a PC program [unique as far as we can determine] that produces a list of what deep-sky objects are visible in the sky at a user-determined time and place, for any location on the Earth. It produces a convenient and (disposable!) list that the user can take to the telescope for an observing session.
When is the best time to see the Andromeda Galaxy, known also as M31? What about M42, the Great Nebula in Orion? That depends on several factors. First, where you are on the planet Earth, second, what time of year it is, and third, when you like to do your observing. The best time to see anything through our atmosphere is when the sky object is near the meridian, the imaginary line that runs through the North Pole point in the sky, through the zenith (the point directly overhead), and through the South Pole point in the sky (which will be below the horizon for Northern Hemispherians). Let's examine these three factors individually.
Since the Earth is roughly spherical, and since we have divided it up into roughly 24 time zones to match the 24 hour clock we use, where you are on the Earth is important. You will see a different sky if you were standing on the North Pole than if you were standing on the South Pole. Also, since the Earth rotates in a continuous fashion and the time zones are quantized, this also creates a problem. For example, say you were twenty feet east of the imaginary line which divides two time zones, and you had a partner with whom you were in contact that was forty feet west of you, so that they were twenty feet west of the time zone line. Hence, their clock would measure one hour earlier than yours, so that when a certain star crossed the meridian, they would record it an hour earlier than you did, even though the two of you saw this passage at virtually the same instant. Likewise, if you were on the far eastern edge of a time zone and you had a partner on the far western edge of the same time zone, you would record the meridian passage of a star nearly an hour earlier than your partner. So, it matters where on the Earth you stand.

Download Links:

Download Link (High Speed Download)

Download Link 1 (http://www.uploading.com/...)

Download Link 2 (http://mihd.net/...3eilrc)

DISCLAIMER:

This site does not store Guide to Observing Deep-Sky Objects: A Complete Global Resource for Astronomers on its server. We only index and link to Guide to Observing Deep-Sky Objects: A Complete Global Resource for Astronomers provided by other sites. Please contact the content providers to delete Guide to Observing Deep-Sky Objects: A Complete Global Resource for Astronomers if any and email us, we'll remove relevant links or contents immediately.