Interferometry and Synthesis in Radio Astronomy

Book Description

Comprehensive, authoritative coverage of interferometric techniques for radio astronomy

In this Second Edition of Interferometry and Synthesis in Radio Astronomy, three leading figures in the development of large imaging arrays, including very-long-baseline interferometry (VLBI), describe and explain the technology that provides images of the universe with an angular resolution as fine as 1/20,000 of an arcsecond.

This comprehensive volume begins with a historical review followed by detailed coverage of the theory of interferometry and synthesis imaging, analysis of interferometer response, geometrical relationships, polarimetry, antennas, and arrays. Discussion of the receiving system continues with analysis of the response to signals and noise, analog design requirements, and digital signal processing.

The authors detail special requirements of VLBI including atomic frequency standards, broadband recording systems, and antennas in orbit. Further major topics include:
* Calibration of data and synthesis of images
* Image enhancement using nonlinear algorithms
* Techniques for astrometry and geodesy
* Propagation in the neutral atmosphere and ionized media
* Radio interference
* Related techniques: intensity interferometry, moon occultations, antenna holography, and optical interferometry

Interferometry and Synthesis in Radio Astronomy, Second Edition is comprehensive in that it provides an excellent overview of most radio astronomical instrumentation and techniques.

Customer Reviews:

amazing engineering feats.......2005-03-08

You can think of this as a course in very specialised antenna design. Certainly, the broad concepts would be immediately recognisable to any engineer who has built antennas. But here the sources that are being detected are at far reaches indeed. Correspondingly, the sizes of each radio dish far exceeds your typical antenna in industrial or military use.

Of course, the book points out that radio telescopes further enhance their resolving power by positioning these dishes at precise distances from each other, and adjusting the phases of incoming signals accordingly. To someone new to radio astronomy, one of the impressive achievements is that an array of dishes can thus be combined into one large telescope, spanning several kilometers.

The book then shows how this is taken to a logical limit of VLBI. Where arrays at different locations across the globe might combine their signals, giving a telescope comparable to the size of the globe, for greater resolution. A tribute to how engineering helps drive advances in pure research.

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lake wobegon
Do not drive and listen. . .
Full of Hearty Laughs and Poignant Moments
Woe is Right
Great, just great.

Lake Wobegon USA (Lake Wobegon)
Garrison Keillor
Manufacturer: Highbridge Audio
ProductGroup: Book
Binding: Audio CD

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GPX C3948BI Ultra-Slim CD Player with 40-Second Anti-Shock Protection and Car Kit

ASIN: 1565110080

Book Description

Lake Wobegon U.S.A. is the eagerly anticipated successor to News From Lake Wobegon (one of the bestselling spoken-word audio ever) and More News From Lake Wobegon. This collection contains 17 touching, exquisitely funny monologues from Garrison Keillor recorded during American Radio Company broadcasts from tour stops all over the country. The tales, says Keillor, are about "the luxury of rhubarb pie, the perils of prophecy, Florian and Myrtle's thrifty vacation, the vapor lights of Our Lady of Perpetual Responsibility. . . ." They are also about joy, grief, dreams, luck, and mysteries—about the extraordinary moments of wonder that illuminate our ordinary lives.

Customer Reviews:

lake wobegon .......2007-06-12

Entertaining, lets the listener get out of town for a while.

Do not drive and listen. . ........2005-02-14

Made the mistake of listening to this on a drive to New Orleans. Usually takes two hours. However, when you have to pull the car over and laugh, it can take about three or four hours. Taking out the CD and arriving quicker was not an option - as long as there is a drive-through fast food joint close to the highway. The news from Lake Wobegon has become a letter from home over the past years, and, it will erase any damage you have had from your own family!!

I cannot imagine NOT having this in your collection. It is wonderful.

Full of Hearty Laughs and Poignant Moments.......2004-07-25

If you're not familliar with Garrison Keillor's stories of small-town, Midwestern life, check to see when his program is aired on your local NPR station. His radio program (called A Prarie Home Companion) is full of esoteric music, old fashioned comic sketches, and amusing interviews, but the real treats are his delightfull and insightfull Lake Wobegon yarns, which is what these tapes are full of. If I could give this 4 tape set 6 stars I would, but 5 will have to do. Included is a story about a Sunday school teacher's husband, who gets roped into managing the Christmas pagent at the last minute and must deal with debates over allowing live animals into the church, children with stage fright, and conspiracies to keep local Lutherans from getting into the Catholic church to watch the spectacle. Another favorite is The Six Labors of Father Wilmer, in which a battle between a priest and a parishoner leads to a cleric, in his pajamas, on a 20 foot ladder, at 3 am, trying to rid the church of the evil" of mecury lighting. Of course there's Sweet Corn, in which we learn about the secret aphrodisiac of the Midwest. Another good story is Blue Devils, in which we witness the progress of an overly competitive, all-girl's basketball team through the eyes of anxious parents, who try to make sense of sweet, blonde, little girls--who kiss mothers before joining the game, but are soon seen elbowing enemies to the floor and uttering words that have never been allowed in the house. All in all, there are 17 monologues and some music between stories...making about 5 hours of good, old-fashioned-but-liberal-minded entertainment. If you're looking for another good (probably better!) Keillor set, go for Life These Days. I guarentee you'll crack up.

Woe is Right.......2003-02-06

An old, tired theme. That is what this compilation delivers, and delivers and delivers.

While Mr. Keillor's show was moderately entertaining 15 years ago, it has not kept pace with time. Thus, the stories seem to be replayed on an old, stuck phonographic record, replayed over and over.

If you are a big time Keillor fan, you will probably find this work to be an enjoyable distraction while mixing your Metamucal. However, for anyone who can still think clearly, all these staid stories will just make you run for the can.

Great, just great........2002-08-30

This is one of the best works of Mr. Keillor and I read them all. Please keep writing it.

Space Weather: Research Towards Applications in Europe (Astrophysics and Space Science Library)

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Space Weather: Research Towards Applications in Europe (Astrophysics and Space Science Library)

Manufacturer: Springer
ProductGroup: Book
Binding: Hardcover

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ASIN: 1402054459

Book Description

This book shows the state of the art in Europe on a very new discipline, Space Weather. This discipline lies at the edge between science and industry. This book reflects such a position with theoretic papers and applicative papers as well. It is divided into five chapters. Each chapter starts with a short introduction, which shows the coherence of a given domain. Then, four to five contributions written by the best specialists in Europe give detailed hints of a hot topic in space weather.

From the reading of this book, it becomes evident that space weather is a living discipline, full of promises and already full of amazing realizations. The strength of Europe is clear through the book, but it is also clear that this discipline is worldwide.

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Amateur Radio Astronomers Hand
John Potter Shields
Manufacturer: Crown
ProductGroup: Book
Binding: Hardcover

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ASIN: 0517558106
Release Date: 1986-05-04

Instrumentation and Techniques for Radio Astronomy (Ieee Press Selected Reprint Series)

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Instrumentation and Techniques for Radio Astronomy (Ieee Press Selected Reprint Series)

Manufacturer: Institute of Electrical & Electronics Enginee
ProductGroup: Book
Binding: Hardcover

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ASIN: 0879422408

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Review of Prof. John Kraus' RADIO ASTRONOMY 2nd ed.
good for physicists with engineering background

Radio Astronomy
John Daniel Kraus
Manufacturer: Cygnus-Quasar Books
ProductGroup: Book
Binding: Spiral-bound

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ASIN: 1882484002

Book Description

RADIO ASTRONOMY is the classic text and reference book which has served a generation of the world's radio astronomers, now in a much enlarged, updated edition. "Authoritative, encyclopedic, presented clearly and elegantly", Sky and Telescope. "The standard textbook on radio astronomy used by professionals and amateurs alike", Radio Astronomy Magazine. "A useful, up-to-date, clear and pedagogically often brilliant introduction to the subject", Scientific American.

Customer Reviews:

Review of Prof. John Kraus' RADIO ASTRONOMY 2nd ed........2002-03-16

Prof. Kraus' book RADIO ASTONOMY 2nd ed. is THE classic textbook
on radio astronomy. Radio astronomy is an exponentially growing
field of research through which we can gain insight into
everything from the origin of our solar system to the origin of
the Universe itself. Unlike the beginning of optical astronomy
which is lost in the midsts of time, radio astronomy can trace
its beginnings to 1931 with Karl Jansky's pioneering work at
Bell Laboratories. Dr. Kraus was also there at the beginning,
attending Jansky's first public lecture and contributing
technically, scientifically, and in education to this emerging
field ever since. This experience gives Dr. Kraus a unique
vantage point from which to write his book. In the book,
Dr. Kraus carefully and methodically covers the basics of radio
astronomy, wave polarization & propagation, radio telescope
antennas & receivers, and discusses radio observations of the
solar system, interstellar medium, pulsars, and external
galaxies. Dr. Kraus is an excellent technical writer. He provides
worked out examples and illustrations for many of the most
important problems one encounters in this field. Indeed, this
book serves as an important working reference for radio
astronomers as well as an introduction to new comers. The writing
is clear. Unlike with many textbooks, when one finishes reading a
chapter in RADIO ASTRONOMY, you will have enough practical
knowledge to actually solve real problems in radio astronomy
pertaining to the subject matter. For anyone interested in radio
astronomy as a hobby or career, I would say this book is a MUST.

good for physicists with engineering background.......2000-07-25

Perhaps referred as the BIBLE of radio-astronomy, this book has everything. Though the novice user may find it intimidating because of the technicality of the material, the book is still a reference book for many. This book has been designed as a course-work and the formal approach to teaching by means of worked out examples and exercises are clearly visible. The author is a Prof at Ohio state, has an absolute mastery of the subject and a strong historical background about the start and his involvement in this movement to boot. Though the starting of the chapters are very abrupt, this is passeable as the book is intended for graduate studies and it is implicit that one knows the basics. Ex: He directly jumps into "polarization" without explaining the term lucidly for a lay-man. Some new chapters have been added to make the book more upto date as possible.

Book Description

Advanced Array Systems, Applications and RF Technologies adopts a holistic view of arrays used in radar, electronic warfare, communications, remote sensing and radioastronomy. Radio frequency (RF) and intermediate frequency (IF) signal processing is assuming a fundamental importance, owing to its increasing ability to multiply a system's capabilities in a cost-effective manner. This book comprehensively covers the important front-end RF subsystems of active phased arrays, so offering array designers new and exciting opportunities in signal processing.

Key Features
* provides an up to date record of existing systems from different applications
* explores array systems under development
* bridges the gap between textbook coverage of idealized phased arrays and practical knowledge of working phased arrays
* recognises the significance of cost to the realization of phased arrays
* discusses future advances in the field that promise to deliver even more affordable arrays ['intelligent' or self-focussing/-cohering arrays]

Tools of Radio Astronomy: Problems and Solutions (Astronomy and Astrophysics Library)

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Tools of Radio Astronomy: Problems and Solutions (Astronomy and Astrophysics Library)
Thomas L. Wilson , and Susanne Hüttemeister
Manufacturer: Springer
ProductGroup: Book
Binding: Paperback

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ASIN: 3540668020

Book Description

Covering topics of radio astronomy, this book contains graduate-level problems with carefully presented solutions. The problems are arranged following the content of the book "Tools of Radio Astronomy" by K. Rohlfs and T.L.Wilson (also available in the this series) on a chapter-by-chapter basis. Some of these problems have been formulated to provide an extension to the material presented in "Tools of Radio Astronomy".

Radio Science Observing, Vol. 2 (Radioscience Observing)

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Pretty Good VLF to Radio Astronomy Reference
In Agreement with Robert Jones
Useful information, but watch out for errors
Useful, however...

Radio Science Observing, Vol. 2 (Radioscience Observing)
Joseph Carr
Manufacturer: Prompt (DPI - 8/01)
ProductGroup: Book
Binding: Paperback

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Radio Astronomy

ASIN: 0790611724

Book Description

Joe Carr expands on Volume 1, covering techniques and methods, hardware design and construction, more RadioScience theory, and related geoscience and planetary science activities. A CD-ROM with all new material is included.

Customer Reviews:

Pretty Good VLF to Radio Astronomy Reference.......2003-03-23

This book is a great reference book for the VLF hobbyist to professional. It explains stuff about mostly propagation, VLF to HF antennas. Also there some pretty good projects to let you
get your hands on some VLF theory. Also for extra education this book is made for the college student that needs some extra
background on the subject of radio science observing. If you can master this course you have a communications degree waiting to be hung up on the your wall with honors. Also there is Radio Science Observing Volume 2 . Please Note you must first get this volume before you can get the 2nd Volume. This book
volume 1 and 2 should grace on longwave radio, and SETI's serious hobbyist thru engineers, scientists bookshelf. Its almost like a college course that is still recommend for very radio enthusiast and serious engineer.

In Agreement with Robert Jones.......2000-03-04

I do not own either of the two RadioScience (vol 1 and vol 2) books by J. Carr, but I had the chance to browse through them at some length at a bookstore. I would pretty much agree with Robert Jones Amazon review remarks. In fact, I'd like to hear from him and have posted my e-mail address with this review.

The books contain a wide variety of information meteors, (even) telemetry, solar observations using VLF and other topics. It didn't seem to be terribly deep in the area of radio astronomy. There are plenty of circuit designs, and I may be a bit unfair here, but in the area of radio astronomy (RA), it may not have been enough. I consider RA the radio science part of things that deals with objects outside the earth, sun, planets, stars, nova, galaxies, etc.

Both books are accompanied by a CD-ROM but I couldn't find much of a description about the contents of either. Both books have very thorough indexes, which I appreciate in any technical book. I'd agree with Mr. Jones comment about the book needed an editor. The publisher is part of the Howard Sams 'empire'. I'd add that there are few books for beginners on these subjects and that they all seem to be lacking an editorial touch. That's too bad because it seems to have allowed the authors to wander a bit on the subject. In the case of the two books, it appears that it has also led to some slight difficulties in the presentation. If you are really intereested science and radio applications, it would seem that these two books, at least volume 1, would be useful way to get started. He has some good supporting authors (Mims, etc.) and has a respectable collection of references.

Useful information, but watch out for errors.......2000-01-29

The good news is, there's a lot of good information in this book. The sections on natural radio emissions, VLF receivers, and loop antennas are particularly useful. The bad news is, the editor/typesetter should be bound to the mast and flogged.

First, the level of prior knowledge assumed is a bit inconsistent, and a few bits of information seems overly elementary while other sections beg for more background. For example, the millivolt is defined (incorrectly, see pg 37), but knowledge of frequency vs. wavelength, voltage [neither volts nor microvolts were defined], current, power, resistance, capacitance, reactance, impedance and decibels are all assumed. Also, the included information sometimes seems irrelevant. For instance, the (long) section on receivers deals with characteristics of SSB, CW, RTTY and even radar receivers, even though these operating modes have little to do with natural radio emissions, the stated purpose of the book. As an extreme example, the author expends a short paragraph and a figure on the tangential sensitivity of radar receivers. That's relevant? Then, after a long (and slightly belabored) discussion of the importance of dynamic range, spurious responses, third order intercepts and the like, the author provides a number of circuits with little or no associated performance specifications. How is the reader to know what level of performance to expect from each circuit?

The sections on antennas (other than loops) seem like an incomplete cookbook, with not enough information given to build some of the examples, but also not enough background to figure out the missing details yourself. There is a program on the included CD-ROM that will calculate dimensions for several of the designs. Might have been nice to mention that in the text, however. In fact I saw no mention in the text that the CD-ROM even existed.

These complaints are minor quibbles. However, the poor typography and (lack of) editing are not. A few examples:

Pg 37 refers to a "previous calculation" that doesn't exist.

Pg 37 defines 1 mV = 1/1000 mV.

Pg 48 has the square root of the quotient 5/2.8 becoming "v5/2.8". It happens again on the same page and again on page 50. I guess that typeface doesn't have a square root.

Pg 98 calls the Earth an "oblique spheroid" when I believe it is an oblate spheroid.

Pg 157 mentions a 1972 paper describing observations of a 1979 eclipse. Time travel.

Pg 196 has the Greek letter lambda being replaced by "l" for wavelength.

Pg 201 Definition of mu (permeability) for Eq. 12-1 is wrong due to an extraneous "p".

Pg 203 Eq. 12-3 is wrong by a factor of 1/pi.

Pg 224 Fig 13-2 substitutes "Earth's service" for "Earth's surface".

Pg 342 Eq 20-1 is wrong due to an extraneous factor of 2.

There are others. There are several places where information is omitted, e.g. Chapt 10 claims to discuss direct conversion receivers but doesn't, parts lists leave out parts (L1, pg 131-132), diagrams leave out critical information (e.g. dimensions in Fig 8-3) or diagrams are missing altogether (pg 183). Units get switched (Pg 171), variables get switched (Pg 359), and algebraic signs get switched (Pg 46). A pet peeve of mine is that absolute temperature is given in degrees Kelvin instead of just Kelvins. There are other places where the discussions are incomplete. In short, where on earth was the editor in this process? The copyright page shows that the editor, typesetter, and indexer were all the same person. Surely she read the manuscript? If I could pick up the above problems with one read and no editing background, shouldn't a professional editor of technical books do at least as well?

I'm not trying to berate the author. Mr. Carr is a prolific and knowledgeable writer of both books and magazine articles. The book reads like a good draft manuscript, and any manuscript will have errors and oddities like the above. That is what the editor is for. The problem here is, the publisher, apparently thinks that being prompt equates to no editing.

Now, can I recommend this book? Yes. In spite of my whining, the book brings together information that is hard to get elsewhere and the author did a pretty good job, even if the editor didn't. If you are interested in natural radio emissions the book IS worth having, despite its editorial faults. See also Volume 2.

Useful, however..........2000-01-29

You might want to start with my review of RadioScience Observing, Volume 1 by the same author. This book is better, probably because the author states that he got some feedback from readers and tried to address their wants. Again, in my opinion the editing comes up short.

The hardware sections of this book are in general very good, and the sections describing specific circuits tend to be well-written and useful. In a few places, I thought he included information that didn't add much, for example the UHF stripline mixer circuits. Not many hobbyists will get UHF stripline circuits working. The author does give an excellent, detailed treatment of a universal IF strip that could be the basis for a lot of useful receivers. I wish that there had been a set of converters for ELF - HF and some good local oscillator designs to go with it that were described as completely. There was also no real discussion of local oscillators. This is a significant omission to someone wanting to build a receiver. Another subject needing more coverage is detectors.

The chapter on magnetometer sensors was well done, with a couple of minor quibbles. One, the author states "the sensor should be pointed towards the source". Since magnets are dipoles (or a larger even number of poles) "source" has little meaning. For maximum sensitivity, the sensor should be aligned with the field lines, which in many cases mean that the sensor is arranged at some angle (or even perpendicular) to, not pointed at, the "source". The other gripe is with undefined terms. He puts a conversion for Gauss and Tesla in a table of conversion factors (it's backwards, but at least it's there), then describes most of the fields in Oersteds (in air, if H = 1 Oe, B = 1 Gauss = 10e-4 Tesla). He also uses gamma without definition (1 gamma = 10e-9 Tesla). A brief discussion of H vs. B and the appropriate units would have helped. Squawking aside, there is more truly useful information on instruments for measuring static magnetic fields in this one chapter than the rest of the recent "hobbyist" literature combined. Good stuff.

The invited chapter on measuring solar UV by Forrest Mims III is excellent. Perhaps because this information had been previously published in Scientific American, it has the editorial polish that that magazine is known for, and didn't suffer from the inattention of this book's editor (more on that below). More likely, based on the other Mims work that I have seen over the years, he self-edits to the point of polish.

The other invited hardware chapter, Allan Coleman's description how to lengthen the period of seismometers, was also good, with the exception that he neglected to mention why anyone would want to do such a thing! An invited chapter on SETI by Dr. Paul Shuch was similar to one included in Vol 1, both being well-written invitations to get involved in amateur SETI.

On to the bad news. Why is it that Prompt Publications can't seem to do a decent job of editing? A few examples:

Table of Contents: "receiver" is misspelled in the entry for chapter 3.

Pg 7 states units will be either CGS or MKS. Table 1-2 uses neither system, instead gives length as meters, mass as grams and time as seconds. MGS?

Pg 8: Fig 1-2, Extraneous "1 second" label for a sinusoid of supposedly arbitrary frequency.

Pg 8: Eq 1-2 wrong due to extraneous factor of zero (!)

Pg 8: Eq 1-3 wrong due to algebraic or typo error.

Pg 13: Table 1-4 conversion between Gauss and Tesla wrong (backwards).

Pg 36: text refers to wrong figure.

Pg 37: typo (1,4500 kHz instead of 1455 kHz)

Pg 55: Text has wrong component ID (fig 3-20 has correct number).

Pg 88 states that lightning generates up to 15,000,000 volts. Vol 1 (pg 120) says 250,000,000 volts. Big difference, which is right?

Pg 88 paragraph 2 says that lightning travels at 100,000,000 ft/sec. Paragraph 4 (same page!) says that lightning travels at the speed of light (almost 1 billion ft/sec).

Pg 108: use of archaic "200 mmV" (milli-millivolt) instead of 200 microvolts.

Pg 179: 1 dB switch and 9 dB switch is 10 dB of attenuation, not 3 dB.

Pg 320: Eq 15-5 missing term(s).

Pg 335: Section heading incorrect.

Pg 378: Table 1 (cable specs) missing.

General gripes: The fundamentals in Chapter 1 of this volume belonged in Volume 1, BEFORE all the detailed discussions based on that information.

Book Description

Extragalactic radio sources are among the most unusual and spectacular objects in the universe, with sizes in excess of millions of light years, radiated energies over ten times those of normal galaxies, and a unique morphology. They reveal some of the most dramatic physical events ever seen and provide essential clues to the basic evolutionary tracks followed by all galaxies and groups of galaxies.

In The Physics of Extragalactic Radio Sources, David De Young provides a clearly written overview of what is currently known about these objects. A unique feature of the book is De Young's emphasis on the physical processes associated with extragalactic radio sources: their evolution, their environment, and their use as probes to solve other astrophysical problems. He also makes extensive use of the large amount of data now available from observations at x-ray, optical, and radio wavelengths to illustrate his main points.
The Physics of Extragalactic Radio Sources will be a comprehensive introduction to the field for graduate students and a useful summary for astrophysicists.

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