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  #1  
Old 03-03-2012, 10:19 PM
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hickny (Peter)
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Thumbs up Transit of Venus

Read Nick Lomb's book "Transit of Venus 1631 To The Present" from cover to cover in two sittings. Simply couldn't put it down.

Detailed information on transits from when Kepler first predicted the 1631 transit.

Jeremiah Horrocks and William Crabtree the first know observers of a transit.

Edmond Halley devising a method to use the transit to measure the distance from Earth to Sun and hence have the ability to measure the size of the Solar System.

Interesting reading about the pitfalls of travelling to far off locations over land and see to observe transits and being at the mercy of the weather. The discovery of new phenonema including black drop, shadowy envelope, and polar light patches. Cooks "Voyage of Discovery" and the development of photographic techniques and later a detailed history of observations in the new colony. The wonderful work of Australian astronomers Henry Russell, John Tebbutt commerated on the paper $100 note and later the destruction of the Great Melbourne Telescope in the Mt. Stromlo bushfire of 18th January 2003.

Lomb mentions the subsequent decline in interest and then the rawakening in 2004, the first observations from space using NASA's Transition Region and Coronal Explorer (TRACE) and the newly built land based Swedish 1m Solar Telescope.

Lomb gives an explanation of NASA's Kepler spacecraft's discovery of a star known as Kepler-11 with at least six planets orbiting it, discovered using transit techniques.

The final pages include tables of details to assist in observing the transit from different locations in Australia, USA, Europe and Asia with an exlanation on safe viewing.

Hardcover 226 pages. Published by NewSouth Publishing.

ISBN: 9 781 74223 269 0

Available for $49.95 from the Australian Museum shop.

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  #2  
Old 04-03-2012, 08:08 AM
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iceman (Mike)
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I agree, it was a great book. I did a review here:
http://www.iceinspace.com.au/46-662-0-0-1-0.html
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Old 04-03-2012, 09:10 AM
mikerr (Michael)
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Does the book go into any detail about Sir Edmond Halley's observations of the transit of Mercury from St Helena in 1677?

Michael.
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Old 04-03-2012, 09:24 AM
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hotspur (Chris)
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Sounds great,might have to get this one.This area of astronomy is my most favourite.When is the transit this year? (I have not got around to getting a 'Astronomy 2012' yet?)

cheers
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Old 04-03-2012, 09:28 AM
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hickny (Peter)
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Thumbs up Transit of Venus

Quote:
Originally Posted by mikerr View Post
Does the book go into any detail about Sir Edmond Halley's observations of the transit of Mercury from St Helena in 1677?

Michael.
It is mentioned on page 42 and according to the text was the impetus for suggesting that similar observations of the transit of venus would enable astronomers to calculate the distance to the Sun. Halley fully developed the idea with practical detail unlike Scottish mathematician James Gregory who hinted at the idea but didn't develop it further.
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Old 04-03-2012, 09:32 AM
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Thumbs up Transit of Venus

Quote:
Originally Posted by hotspur View Post
Sounds great,might have to get this one.This area of astronomy is my most favourite.When is the transit this year? (I have not got around to getting a 'Astronomy 2012' yet?)

cheers
6th June, 2012 visible from Eastern states of Australia in its entirety. From Sydney...
First contact around 8:16 a.m.
Second contact around 8:34 a.m.
Third contact around 2:26 p.m.
Fourth contact around 2:44 p.m.
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  #7  
Old 04-03-2012, 10:55 AM
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iceman (Mike)
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Everything you need to know about the Transit of Venus:
http://www.iceinspace.com.au/63-658-0-0-1-0.html

And you can buy your eclipse glasses (for viewing the transit naked eye) here:
http://shop.iceinspace.com.au/
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  #8  
Old 04-03-2012, 02:02 PM
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Looking forward to this event, You dont miss an opportunity Mike, nice sales pitch there.

Leon
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  #9  
Old 04-03-2012, 03:26 PM
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Just making sure people protect their eyes, Leon
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Old 05-03-2012, 12:06 PM
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Paul Haese
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Mike I found an error in your article. You have the sun at 32 arc seconds when in fact it is 32 arc minutes. That can be found under the heading "How big will Venus appear".
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  #11  
Old 05-03-2012, 12:18 PM
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Ah, thanks Paul. Will update that later today.
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  #12  
Old 06-03-2012, 10:34 AM
icytailmark (Mark)
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with the weather we had lately its probably gunna be cloudy
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  #13  
Old 04-04-2012, 09:02 PM
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Shark Bait (Stu)
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I have just finished reading this book. It is an interesting read and I have learnt a lot about the upcoming Transit of Venus. I think we are all hoping for clear skies on the 6th of June.

One question though....

On page 74, the telescope made by James Short is referred to as a reflector. It looks like a refractor to me. Can anyone who has this book confirm the type of telescope shown in the photo?

Last edited by Shark Bait; 05-04-2012 at 06:37 AM.
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  #14  
Old 04-04-2012, 10:43 PM
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barx1963 (Malcolm)
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Possibly a Cassegrain? In those days the focal ratios would have been much slower.

Malcolm
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  #15  
Old 05-04-2012, 05:19 PM
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Thanks Malcolm. I ended up sending an email to Dr Nick Lomb at the Powerhouse Observatory and he sent back the answer. This is a portion of that reply:

The telescope shown on page 74 of my book is indeed a reflecting telescope. It is of the Gregorian type and its maker James Short was famous for making such telescopes. These telescopes consist of two concave mirrors with a hole in the centre of the primary mirror to allow observation with an eyepiece. See the Wikipedia entry for more details http://en.wikipedia.org/wiki/Gregorian_telescope.

I would enjoy owning an original example of these brass telescopes but I suspect my pockets are not deep enough.
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