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Ian Morison "Ian" (United Kingdom)

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TS-Optics Paragon ED 2" wide angle eyepiece 40mm for telescopes - 68 field of view - extendable eyeguard, TSED40
TS-Optics Paragon ED 2" wide angle eyepiece 40mm for telescopes - 68 field of view - extendable eyeguard, TSED40
Offered by Teleskop-Service Germany
Price: 133.00

1 of 1 people found the following review helpful
5.0 out of 5 stars A superb eyepeice, 20 Jan 2012
This is a version of the original TMB Paragon 40 mm designed by Thomas M. Back - a superb optical designer who is sadly no longer with us. It is said to be identical, so my comments related to the TMB version should be relevant. It has the widest field stop that can be fitted into a 2" barrel so will give the maximum possible field of view with a telescope.

With most scopes it will give excellent stellar images across at least four fifths of the diameter. On my Takahashi FS102 it gives edge to edge sharpness.

I believe that to improve on its performance one would need a very expensive Tele Vue eyepiece.

Highly recommended.

Pluto: Sentinel of the Outer Solar System
Pluto: Sentinel of the Outer Solar System
by Barrie W. Jones
Edition: Hardcover
Price: 25.19

4 of 4 people found the following review helpful
5.0 out of 5 stars Pluto Unveiled, 14 Feb 2011
Professor Barrie Jones is one of the UK's leading experts on the Solar System and so is ideally qualified to write about, not just Pluto as a planet, but also its place in the outer Solar System. This beautifully printed book does not disappoint. Following an introduction to the solar system there is a fascinating account of the discovery of the outer planets of the Solar System and the early attempts to find another planet beyond Neptune. We learn how Clyde Tombaugh was employed by the Lowell Observatory to search unsuccessfully for "Planet X" whose location in the sky had been predicted by Percival Lowell. He then carried his own search along the plane of the ecliptic and, in 1930, discovered the planet that became known as Pluto. Professor Jones then tells how, since then, we have learnt much about Pluto and how in 1978, James Christy discovered Pluto's moon Charon which enabled the first accurate mass for Pluto to be determined - just 0.2% that of the Earth! Problems for its status a planet began when objects of similar and, finally, one (Eris) of slightly larger size were discovered. Should these objects be given the status of a planet, or should Pluto be demoted? We are told of the heated discussions that took place at the International Astronomical Union (IAU) leading up to resolution, passed at the 2006 IAU General Assembly in Prague, that gave Pluto the status of a "Dwarf Planet" along with the newly discovered Kuiper belt Object, Eris, and Ceres, the largest of the Minor Planets. Finally, the book looks forwards to the New Horizons mission to Pluto, planned to flyby Pluto on the 14th July 2015 - perhaps Professor Jones will then be able to add another chapter to this excellent book!
Ian Morison, Gresham Professor of Astronomy.

The Search for Life Continued: Planets Around Other Stars (Springer Praxis Books / Popular Astronomy)
The Search for Life Continued: Planets Around Other Stars (Springer Praxis Books / Popular Astronomy)
by Barrie W. Jones
Edition: Paperback
Price: 19.99

5.0 out of 5 stars A superb introduction to the search for life., 7 Jan 2010
Professor Barrie W. Jones is a world expert on the orbits of extra-solar planets and of the requirements for the evolution of life, so no one could be more qualified to write a book about searching for life within our galaxy - whether it be within our own solar system or beyond. You can find the detailed contents elswhere, so it is suffice to say that book first gives a background to the Solar System and our Earth's place within it, then discusses the fundamental processes of life and its origin here. It then considers the the liklyhood of finding life elswhere in our own solar system and I was fascinated to learn how, as our Sun gets hotter and the Earth will become unsuitable for life, Mars will again become a place where life could evolve and perhaps become a "lifeboat" for the human race. Then a major part of the book gives the background to other stars and solar systems that might be capable of supporting life and the various ways in which the, now, hundreds of exoplanets have been discovered. Finally it looks at the ways that we may be able to detect, first, the presence of lifeforms on nearby planets by the analysis of their atmospheres - our Earth is unique in the solar system for showing evidence of water vapour and ozone(and hence oxygen) in our atmosphere - and secondly of advanced intelligent life through SETI - the Search for Extra-Terrestrial Intelligence - using both radio and optical searches.

Professor Jones has been involved in writing the superb course material provided by the Open University for its students so it is not surprising that the book is beautifully written in a way that makes the ideas and concepts easily understandable - greatly helped by the many excellent diagrams and colour images. Over the past few years I have had to cover much of this material for use in lectures and I only wish that I had had this book to refer to when doing so. I can think of no better book on the subject and highly commend it to you. Ian Morison, Gresham Professor of Astronomy.

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