AstrotalkUK

Chris Lord  of Blackpool & District Astronomical Society continues the story of the telescope leading up to its use by Galileo for astronomical observations.

Ibn Sahl and Ibn al-Haythem were two scholars who during the 10th and 11th century developed the fundemental mathematical principles of refraction, reflection and dispersion and kick started the science of optics. Chris concludes this 2nd part at that point in history which marks the beginning of the telescope - Galileo’s profound astronomical discoveries in 1609.

 

 episode24 [24:22m]: Play Now | Play in Popup | Download

Hans Lipperhey’s patent application in the Netherlands for a telescope was formally denied on 2nd October 1608. Nonetheless, it is that individual, that place and that date which history associates with the invention of the telescope. Most of us are aware of the fundamental astronomical discoveries Galileo went on to make with it in the following year but could they have been made earlier?

Three thousand years ago, in what today is  Iraq , the  Nimrud lens now in the British Museum is clearly recognised as a lens. It probably could not have been used as part of an astronomical telescope but it is evidence that strongly indicates that lenses were in use long before Lipperhey and Galileo. The Pharos lighthouse in Alexandria is another illlustration of the advance understanding of optics in ancient times.

Chris Lord is an accomplished amateur astronomer and member of Blackpool & District Astronomical Society. He has recently completed a major piece of research in telescopes and optics to mark the International Year of Astronomy in 2009.

In this Episode, Chris talks about at the theory of vision, optics and the making and use of lenses during the almost two centuries from Euclid to Galileo.

 

 episode23 [16:58m]: Play Now | Play in Popup | Download

Professor Mark Brake from the University of Glamorgan has an eclectic interest. An academic, broadcaster and author of science and popular science books, he is the organising chair for the the third conference of the Astrobiology Society of Britain: ASB3: The Living Universe, will take place in Cardiff between July 1-4, 2008. We spoke about the relationship between science & science fiction and astrobiology.

 

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You can’t think of Darwin without Wallace, Laurel without Hardy. In UK astronomy there is no more an enduring and familiar partnership than Henbest and Couper. Nigel and Heather have been writing, broadcasting, supporting and publicising astronomy for decades.

Their most recent project is a series of daily radio programs for BBC Radio4 called Cosmic Quest and an associated book History of Astronomy which together chart the story of how human societies through history and around the globe have attempted to understand the universe and their place within it.

 

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After a 7 year journey, Cassini/ Huygens arrived at Saturn in 2004 and Huygens landed on the surface of Titan on January 14th 2005. The only moon within the solar system known to have a substantial atmosphere.

On Monday 3rd of July 1989 it was possible to study the atmosphere of Titan from here on Earth when it occulted a 5.8mag star 28 Sagittarius. Ken Irving from Salford Astronomical Society describes the observation he made and video recording of the unexpected central flash. Available below.

Using data from the onboard Acoustic Sensor Unit, the Planetary Society compressed Huygens two and half hour descent into a 10 second audio clip. 

After landing, Huygens continued to transmit data including those incredible pictures of the surface for another 70 minutes until the communication link to Earth - Cassini disappeared over the horizon. It would not come in range again for 40 days by when Huygens’ batteries were dead. There in its dark cold -180C deep freeze it remains. Probably intact. Professor John Zarnecki from the Open University who lead the Surface Science Package team talk a little about the achievements f the Cassini/Huygens mission.

 

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 episode14 [27:32m]: Play Now | Play in Popup | Download

You may have seen the report from the British UK Space Exploration Working Group suggesting that Britain can get two British Astronauts to the Space station costing less than £75m over 5 years by commercially engaging the Russian Soyuz program rather than the annual £60m cost of going with ESA, or indeed developing a British launch capability.

The Astronomer Royal on the other hand insists that unmanned space research is the way to go. You get a heck of a lot more science for your money

Dave and Leslie Wright from the British Rocketry Oral History program (BROHP) reminisce about the early days when Britain had its own launch capability and the UK Space conference that they host each year.

Want to be a rocket Scientist? Well a new book from a rocket scientist Lucy Rogers may be a good start. Lucy is also the chairman of the Vectis Astronomical Society on the isle of Wight. Their website must be one of the most elaborate. Check it out but .. turn down the volume on your PC first.

 

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Next year marks the 40th anniversary of Apollo 11 landing in the Sea of Tranquillity on the moon. In today’s episode – assistant director & co-producer Chris Riley talks about the recent film “In the Shadow of the Moon” which recounts that period and someone who was a part of it - astronaut Buzz Aldrin on his interest in Astronomy.

 

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The veteran BBC aerospace correspondent Reg Turnill recalls some of the key moments that he personally covered during the height of the space race. Reg has recorded his eye witness account in his book The Moonlandings.

Chris Lintott one of the authors of Bang! and a co-presenters on Sky at Night far too young to have experienced the Apollo program personally, looks forward to the next manned mission to the moon. You have probably heard of Galaxy Zoo but did you know Galaxy Zoo 2 is in the pipeline too.

 

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About 20 years after Galileo used the telescope for astronomy, William Crabtree and Jeremiah Horrocks used it to observe a transit of Venus in 1639. Carl Barry and Lilian Fletcher researched and documented this unique event. If you missed it a 19mb video here.
Former executive Paul Allen (Allen Telescope Array) from Microsoft and Wayne Rosing (LSST Observatory) from Google are modern examples of private investors in space research. Emerging from the the industrial revolution in the 19th century Lancashire were two similar individuals who contributed to making large mirrors and large telescopes. James Naysmith and William Lassell.

 

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 Venus Transit June 2008: Play Now | Play in Popup | Download

Amateur Astronomy in the 21st Century: Will Comet 17P Holmes brighten again? Is an asteroid heading for an impact on a Mars? Who was the founder of amateur astronomy? How amateur are amateur astronomers these days?

The very first episode of AstrotalkUK. A discussion between Tony O’Sullivan, Ken Irving, from Salford Astronomical Society and Chris Lord on the state of Amateur Astronomy in the 21st Century. More about Chris on his website at Brayebrook Observatory.
Links
Asteroid WD5 2007 heading for Mars?
MESSENGER’s revealing view of Mercury.