Category Archives: Society News

May 2013 Stargazing Evening

IMG_2258Our next public stargazing evening takes place this Saturday 18th May, from 6pm until 9pm.

NEAS astronomers will be at the Great Notley Country Park in Braintree with a range of telescopes set up for you to look through.

As the sun now sets quite late, we may be able to some solar observing before turning out attention to the night sky and the first quarter Moon high in the southern sky.

As always our volunteers will try to answer any questions you might have, and give advice about how to start out with astronomy.

This is our last stargazing evening until the Autumn. Over the summer months, we will run midday solar observing sessions.

Everyone is welcome to come along and view through our telescopes. Attendance is free of charge. Please park in the site’s public car park (there may be a site car parking fee) which is just a short walk away and will remain open until 9pm. Details of how to find the site are on our Stargazing page here.

We will be set up behind the Discovery Centre building, so just following the walkway round to find us.

Please be aware that we are dependent on clear weather. If it is cloudy you obviously may not get to see anything! And if it’s really raining we will likely call off the event – so please use common sense before setting out. We will still have a couple of members on site in case you have any questions.

May Meeting – “Astronomical Spectroscopy”

Our speaker this month is Jack Martin, who will be talking about “Astronomical Spectroscopy”.

Spectroscopy is a method used to analyse light by spreading it into its component colour wavelengths and studying the resulting pattern (as spectrum). Astronomical spectroscopy is the study of the spectrum of light from astronomical objects like stars, nebulae and galaxies. Use of spectroscopy has proven vital to our understanding of the universe and has enabled astronomers to infer many physical and chemical properties of objects.

Spectroscopy can be used to derive many properties of distant stars and galaxies, such as: chemical composition, temperature, mass, distance and relative motion (you’ve likely heard of the term “redshift”).

With modern cameras, a simple filter and computer software, spectroscopy can now be carried out fairly simply and inexpensively by amateur astronomers.

Jack Martin, author of the book “A Spectroscopic Atlas of Bright Stars”, will give an introduction to the concepts of spectroscopy and show examples of stellar spectra and what they mean.

The public meeting takes place at the Henry Dixon Hall, Rivenhall End on Wednesday 15th May at 7:30pm. For further information, see the Events page.

April Meeting – “Exploring the Solar System by Satellite” with Dr Stuart Eves

This month for our public lecture, we welcome Dr Stuart Eves as our guest speaker, who will be talking about “Exploring the Solar System by Satellite”.

Stuart Eves is a principal engineer at Surrey Satellite Technology Ltd (SSTL), a company which designs and constructs small satellites. He spent over a decade with the Ministry Of Defence in several space-related positions before joining SSTL.

Amongst the spacecraft SSTL and Stuart has been involved with include the UK-DMC 2 disaster monitoring satellite and the award-winning high-resolution Earth imaging TopSat.

The public meeting takes place at the Henry Dixon Hall, Rivenhall End on Wednesday 17th April at 7:30pm. For further information, see the Events page.

March Meeting – Nik Szymanek: “Beginners Guide to Astrophotography”

Image © Nik Szymanek

Nik is widely acknowledged around the world for his deep sky astrophotography, as well as his image processing abilities, and his pictures are frequently published in the leading astronomy magazines and publications.

Although carrying out most of his imaging from his home in Essex, he also travels to more remote locations in order to take advantage of some of the best observing sites – producing some of the best CCD images and widefield night sky photographs you will see.

Nik will give us an introduction to all the modern forms of astro imaging, how to get started and what techniques to try out.

And, almost as importantly, he’ll showcase a selection of his amazing photography!

The public meeting takes place at the Henry Dixon Hall, Rivenhall End on Wednesday 20th March at 7:30pm. For further information, see the Events page.

January 2013 Public Meeting: The Large Synoptic Survey Telescope – Mapping Dark Matter

For our first meeting of 2013, on Wednesday 16th January, Gary Auker will be providing this month’s public lecture and will be talking about the Large Synopic  Survey Telescope (LSST) – a project that aims to detect the signatures of dark matter.

The 8.4 metre telescope is currently being planned for construction at the peak of the Cerro Pachon in Chile and will survey the entire sky in multiple wavelengths every week using a 3.2 gigapixel digital camera. The imaging power of this setup and its really wide field of view mean that, when the telescope sees first light in 2020, it is expected to make many discoveries and contributions.

The ability of this massive telescope to capture the entire night sky in just three days will be crucial to attempts to map our galaxy. The main observations made using the telescope will focus on fundamental astrophysics, including a study of dark matter in the universe, which will help us understand why the Universe is expanding at an accelerating rate.

LSST will be also be a useful too for identifying objects that change quite rapidly, for example supernovae and near-Earth asteroids. In under a minute the LSST will be able to find small objects in the asteroid belt.

Our talks are open to everyone, all are welcome. It takes place at the Henry Dixon Hall, Rivenhall End on Wednesday 16th January. Doors open at 7.30pm, with the talk starting approx 8pm. Entry is £4 for non-members. For further information on how to get there, see the Events page.

2013 Stargazing Live Events

UPDATE: 17/1/13 – Saturday’s event at Abberton Reservoir has been postponed and will be rescheduled for a later date. Anyone who booked will be notified. Sorry for the inconvenience.

UPDATE: The stargazing night at Abberton Reservoir is now fully booked.

This month we are holding two public astronomy events, which will also be tied in with BBC Stargazing Live.

You’ll be able to watch the Stargazing Live programmes on Tuesday, Wednesday and Thursday of this week. Then get outside and give astronomy a try yourself.

As well as our monthly stargazing night at the Great Notley Country Park in Braintree (Friday 11th January) we will also be holding an event at the Essex Wildlife Trust’s Abberton Reservoir Visitor Centre on Saturday 19th January.

stargazingliveevents2013_800

December 2012 Stargazing Night

This Saturday evening (15th December), we be at the Great Notley Country Park in Braintree for our final stargazing night of the year.

Our Society members will be there from 6pm to 9pm, with a range of telescopes set up for you to look through.

If the skies are clear you’ll be able to observe the planet Jupiter and its moons through our telescopes. There may also be the chance to see the crescent Moon, and we’ll try to find some deep-sky objects (like the Orion Nebula) as well as pointing out the different constellations.

We’ll also try to answer any astronomy questions you might have. And if you own a telescope and need some assistance setting it up, feel free to bring it along and we’ll try to help you.

Everyone is welcome to come along and view through our telescopes, and it’s suitable for all the family. The night is free of charge, although there may be a site car parking fee (please ignore the notices regarding the car park usual closing time). Details of how to find the site are on our Stargazing page here.

We will be set up behind the Discovery Centre building (seen in the below photo), so just follow the path round to find us.

Image by David Warrington

Please be aware that we are dependent on clear weather. If it is cloudy you obviously may not get to see anything! And if it’s raining we will likely call off the event – so please use common sense before setting out. We will still have a couple of members on site in case you have any questions.

November 2012 Stargazing Night

This Saturday evening (17th November), we will again be at the Great Notley Country Park in Braintree for a evening of stargazing from 6pm to 9pm, with a range of telescopes set up for you to look through.

If the skies are clear you’ll be able to observe the planet Jupiter and its moons through our telescopes. There may also be the chance to see the crescent Moon, and we’ll try to find some deep-sky objects as well as pointing out the different constellations.

If you own a telescope and you need some assistance setting it up, feel free to bring it along and we’ll try to help you. We’ll also try to answer any astronomy questions you might have.

Everyone is welcome to come along and view through our telescopes. The night is free of charge, although there may be a site car parking fee (ignore the notices regarding the car park closing time). Details of how to find the site are on our Stargazing page here.

We will be set up behind the Discovery Centre building in this photo, so just following the path round to find us.

Image by David Warrington

Please be aware that we are dependent on clear weather. If it is cloudy you obviously may not get to see anything! And if it’s really tipping it down with rain we will likely call off the event – so please use common sense before setting out. We will still have a couple of members on site in case you have any questions.

Sky Notes for November 2012, with James Abbott #stargazing

There are two eclipses this month but unfortunately neither are favourable from the UK. There is a partial eclipse of the Sun on November 13th, but only visible from the southern hemisphere. Then there is a penumbral eclipse of the Moon on November 28th that is just visible from the UK but only as the Full Moon rises, low in the North East after sunset.

As the night progresses on the 28th it will be worth watching as the Moon makes a close pass of Jupiter, with the separation distance down to only 1 degree (2 Moon widths) at midnight, compared to over 3 degrees at 6pm.

Also by the end of November, Jupiter is reaching its nearest point to Earth and hence its brightest for the year. Opposition is on December 3rd. Although this is still at a distance of some 380 million miles, Jupiter’s huge size and bright cloud tops reflect a lot of sunlight back to us across space. At mag -2.8, with a diameter of nearly 50 arc seconds and at an altitude of 60 degrees when due South, the weeks around opposition will present some of the best observing conditions for Jupiter for many years.

Throughout November, the Taurid meteors are active. Although at a low rate compared to the more active Geminids in December and the Perseids in August, the Taurids are noticeable due to their relatively slow speed across the sky and the occasional bright, coloured meteor. They appear to eminate from 2 distinct radiants in Taurus (the Northern and Southern Branches). The best chance of seeing them is when the waning Moon has left the evening skies from about November 5th onwards. The Taurids are associated with comet 2P/Encke and there have papers suggesting a link to the Tunguska object, though this is disputed by some.

In the pre-dawn Eastern skies Venus remains fairly prominent throughout November and will pass very close to Saturn on the morning of the 27th.

As November draws on the nights lengthen as the North pole of the Earth’s axis starts to point away from the Sun, with the longest nights being around the winter soltice in December. A compensation for the long nights is that when the clouds clear, the winter constellations are on full view. Orion and Gemini will be well up in the East by 10pm mid-month.

Orion is a fascinating constellation. Not only does it have many bright stars, but it is a part of the sky where we can easily see star formation taking place. Even with the unaided eye, the Orion Nebula M42 can be seen as a misty patch beneath the belt of Orion. In this swirl of gas and dust, new stars are being born. The whole of the Orion region is a spectacular sight in binoculars and has enough objects of interest to keep observers with telescopes occupied for hours. The brilliant star Rigel has a companion star visible in medium sized telescopes which can be a challenge to see due to the 7 magnitudes difference in brightness and so needs a fairly high power and a good night to see it.

James Abbott is an astronomer, NEAS member and CfDS Regional Information Officer.

You can download a free map of the evening sky here:

October Stargazing Night

This Saturday evening (20th October), we will again be at the Great Notley Country Park in Braintree for a evening of stargazing from 6pm to 9pm, with a range of telescopes set up for you to look through.

If the skies are clear you’ll be able to observe the first-quarter Moon and maybe also the planet Jupiter. There may also be the chance to see some deep-sky objects and we’ll also try to point out some constellations to you.

If you own a telescope and you need some assistance setting it up, feel free to bring it along and we’ll try to help you. We’ll also try to answer any astronomy questions you might have.

Everyone is welcome to come along and view through the telescopes. The night is free of charge, although there is a site parking fee. Details of how to find the site are on our Stargazing page here.

Image by David Warrington

Please be aware that we are dependent on clear weather. If it is cloudy you obviously may not get to see anything! And if it’s really tipping it down with rain we will likely call off the event – so please use common sense before setting out. We will still have a couple of members on site in case you have any questions.

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