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From: TerryMoselat signaol.com
Date: 2 August 2007 02:17:2 Aug 2007
Subject: IAA Perseids BBQ, Moon in Pleiades, ISS, Armagh events

Hi all,

PERSEID METEORS and IAA PERSEID BBQ: The annual celestial fireworks
show provided by Comet Swift-Tuttle is now under way - better known
as the Perseid Meteor Shower. There will be a gradual build up of
activity over the next week, and then meteor rates will rise
quite noticeably until the night of maximum on 12/13
(Sun-Mon) August, with the actual time of maximum about 03.00
BST on the 13th. In excellent sky conditions an experienced observer
should be able to see about 70-80 meteors per hour just before dawn
when the radiant is highest.

Observers in Ireland
are slightly better favoured than those in GB, as the dawn occurs
later here, giving up to about 30 minutes of extra observing time
close to the time of maximum activity.

Perseid meteors are
quite fast, with a fairly high proportion of bright meteors, some of
which leave persistent 'trains' or trails. As the name implies they
appear to come from the constellation of Perseus, not far from the
famous 'Double Cluster', which lies about halfway between Perseus and
Cassiopeia. For your non-astronomical friends, just say that they
appear to come from the North East part of the sky in the late
evening, and a bit higher up in the East as the night progresses into
Monday morning.

The Moon will not interfere at all this year, giving excellent observing
conditions, - in clear skies, of course!

The Irish Astronomical Association will be having a "BBQ + Perseid
Party" at Delamont Country Park, on the A22, between Killyleagh
and Downpatrick, on Sunday evening, 12 August, commencing at 8 p.m.
We will finish the cooking & eating by about 9.30, allowing time
to clear away, & set up loungers & telescopes & do
some twilight observing of Jupiter before the sky gets dark enough
for meteor observing.

If you intend to come you MUST be there no later
than 9 p.m., as the gates will be closed for access from then on. You
can get out OK at any time, as the gates open automatically on exit.
We will be observing from the car park area beside the picnic tables,
on your right shortly after you enter the park from the main road.

Usual IAA BBQ rules
apply - Free, but bring your own food, drinks, plates, cutlery, cups,
glasses, chair etc if you wish: we will provide the cooking
facilities only.

For observing, bring a lounger if you have one, and plenty of warm
clothes, and a RED, not a white, torch! And if you have to leave
while others are still observing, drive on sidelights only until you
are out of the park. Also, park
your car so that you are facing in the direction in which you will
leave, with the gears in neutral or forward, so
that you don't have to reverse, with your bright reversing light
coming on automatically.

If you are observing from nearer home, choose as dark a location as
possible: a really dark site will more than double the number of
meteors you will see!

If you get any good photos, send them in to our website:

MOON IN PLEIADES: The Moon will pass through the Pleiades, often
known as the lovely 'Seven Sisters' star cluster, on the night
of August 6-7.
This will occur roughly from 01.09 to 03.36 BST on the 7th.  

The waning crescent moon, phase 37%, passes through the N part of the Pleiades.
Stars will disappear at the bright limb of the Moon, and reappear
suddenly from behind the dark limb – a magical sight! Of course,
lots of other fainter stars will also be occulted – I have given
details below only of those brighter than 7th magnitude. The
following times are for Belfast – so
if you are some distance away from there, note that both
disappearance and reappearance times could vary by up to 10-15
minutes from those quoted here, which are in BST to make it easier
for you!





17 Tau




16 Tau




19 Tau




20 Tau




22 Tau




21 Tau




CHR 162




HL 22




HL 26








Mars, mag 0.5, will lie just South of the Pleiades at this time, adding to the spectacle. And Earthshine will still be visible on the Moon, though not very bright: however if you use a tele or zoom lens, and get your exposure just right, you'll get a lovely shot of the crescent moon, plus the Earthshine, in the middle of the Pleiades! Try at around 02.33, when the Earthshine will be nestling beautifully between Eta (2m.8), 20 Tau (3m.8) and the pair of 22 Tau (6.4) and 21 Tau (5m.7). If you get any good photos, send them in to our website: www.irishastro.org 3. ISS over Ireland. The International Space Station, growing gradually bigger as more and more bits are added to it (and with more due on the next Shuttle Launch, scheduled for August 7/8) is passing over Ireland each night this week, and is just moving from morning-time passes to evening passes right now. Most passes occur just before midnight, but a few can still be seen up to about 00.30. Full details for your location on the excellent, and free, www.heavens-above.com. If the Shuttle launches on time, we may see both flying over together as they approach each other for docking. More details on that later. 4. ARMAGH PLANETARIUM - NEW SHOWS: Armagh Planetarium has three brand new shows for the summer, including one specially written for children, called Secret of the Cardboard Rocket It shows how children build their own space ship to explore the Solar System. After the show they can try their hand at rocket building using our top secret plans and experience astronaut training on the gyroscope. If they still have some energy left they can try out Ireland’s first interactive floor, and stomp on alien bugs, avoid alien crabs, and leave their footprints on the Moon! The more artistic little aliens will enjoy making their very own colourful Martians to take home. Armagh is the only place in the UK where you can see our second blockbuster summer show, Dawn of the Space Age. This year marks the 50th anniversary of the launch of mankind’s first artificial satellite that flew in space. In October 1957 the Soviet Union successfully launched Sputnik 1 into Earth orbit. This started a competition between the US and the USSR, the so-called Space Race in the midst of the Cold War. Dawn of the Space Age is a stunning experience; it records the many space firsts that were logged by both nations. This show faithfully recreates the rocket launches and shows the early space craft in amazing detail. You can experience many of the problems that the first astronauts and cosmonauts overcame, and how close many of the early exploits came to disaster. And right up-to-date, you can see the launch of Space Ship One which is an early model of the first tourist space ships that will reach the edge of space. Our final new summer show is our very popular in-house Pole Position. This is a live show, narrated by one of our staff members: it shows Planetarium audiences the amazing things that are to be found in the summer night sky, including the constellations, deep space nebulae, massive globular clusters and spectacular galaxies, all experienced in full colour in our immersive all-dome Digital Theatre. Afterwards take a break to refuel in our Voyager café, before heading outside to Armagh Observatory’s Astropark, where you can stroll from the Sun to Pluto and on to the edge of the universe, or try your hand - or I should say feet - at the amazing 'Human Orrery'. Open Daily July and August 11.30am-5.00pm Booking is Essential: Tel: 028 3752 3689. www.armaghplanet.com Prices Adults £6.00 per show Children (under 16)/Senior Citizens (65 yrs +) £5.00 per show Family Concession Rate £18 (for maximum 2 adults plus 3 children) Group Rates (more than 20 people) £5.00 per person Exhibition Area Only £2.00 per person 5. ARMAGH OBSERVATORY EVENTS: Summer Evening Tours of the Armagh Observatory Grounds, Astropark and Human Orrery
. Dr Miruna Popescu and Armagh Observatory PhD students and others are providing, on an experimental basis, a programme of evening guided tours of the Observatory Grounds and Astropark during July and 
August 2007. The next events will take place on Tuesday 14th August and Tuesday 28th August. Those who wish to participate in these tours should meet Miruna and the other Tour Guides at the main Armstrong School entrance to the Observatory Drive, beside the Courthouse, shortly before 7.00 pm when the tour begins. Car parking is available outside the Observatory main building on in the car park halfway up the Observatory Drive. The Tour on Tuesday 28th August will include an illustrated public talk on the Sun, given in the Observatory Library, by Miruna Popescu, as well as a general question-and-answer session on astronomy. These events are held as part of the summer programme in conjunction with other members of the Armagh Visitor Education Committee (AVEC), and as part of the Observatory’s contribution to the International Heliophysical Year 2007/2008 (IHY2007/2008). Clear skies, Terry Moseley


Last Revised: 2007 August 2nd
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