On the morning of Friday 20 March, about two hours after sunrise, the Sun will start to disappear. the long awaited eclipse of the Sun. This will be the biggest solar eclipse in Ireland since 1999, and the biggest until 12 August 2026.
Ireland and Scotland are the best places in these islands to see the eclipse, with NW Mayo and Donegal seeing the greatest eclipse in Ireland. It will reach 95.5% in NW Donegal, and almost 95% in L'derry. All of Ulster will see at least 93% eclipse, and nowhere in Ireland will experience less than 91%.
The Moon will appear to move across the Sun from West to East, i.e. from right to left as we look at it.
The Moon's shadow will sweep across Ireland from SW to NE. Thus -
The eclipse will begin between about 08.19 in SW Kerry, and at about 08.27 in NE Antrim.
Maximum eclipse will be between 09.22 in SW Kerry and 09.31 in the NE of the island.
It will end between 10.30 in the SW and 10.39 in the NE of the island.
(It will be a total eclipse, where 100% of the Sun will be obscured, in the N Atlantic, but the only land crossed by the track of totality will be the Faroe Islands (where I will be) and the Svalbard Archipelago inside the Arctic Circle.)
EYE SAFETY: It is VERY IMPORTANT that you do not look at the Sun during any stage of the eclipse with any sort of optical instrument such as binoculars or a telescope, and you should NOT look at it directly even with just your eyes. Even though a large part of the Sun will be covered, the part that remains will be just as bright, and it will damage your eye if you look at it directly.
DO NOT attempt to observe it with any type of Sunglasses, 3-D glasses, photographic filters, coloured plastic or a CD, or anything like that.
SAFE WAYS TO OBSERVE THE ECLIPSE:
Unless you have proper CE certified eclipse viewers, or a No 14 Welder's glass, or a proper solar telescope or solar filter, there are only 4 ways to observe safely.
1. PROJECTION Use one half of a pair of binoculars (cap one front lens, and use the other one), or a small telescope with your widest angle eyepiece, to project the image of the Sun through the instrument onto a white card about A4 size, held about 20-30 cm behind the eyepiece. Adjust the focus until the image is sharp. Do NOT attempt to look through the eyepiece, or even through any small finder telescope! And don't let bare skin on your hands get behind the eyepiece or you may get a sore skin burn.
To aim the telescope at the Sun, point it towards it without looking through it, and then adjust it so that its shadow on the card appears smallest – it should then be pointing at the Sun. This will give you the most detailed image You'll have to adjust the instrument periodically as the Sun moves across the sky. You can photo this projected image.
2. MULTIPLE PINHOLES: You can get a lovely artistic effect using a vegetable colander or cook's spoon with multiple small round holes: Let the Sun shine through the holes onto a piece of white card about a foot or two behind it, and you'll see multiple images of the eclipse - a particularly beautiful effect near the maximum stages of the eclipse
3. CEREAL BOX VIEWER: Make your own solar eclipse viewer, using a large sound empty cereal box. Cut a piece of white card or white paper which will just fit neatly into the bottom of the box. Dab glue on the back of it to hold it on the bottom of the box. Cut a 2 to 4 cm square hole in the top flaps near a narrow side of the box. Tape a piece of aluminium kitchen foil completely over this hole. Using a thick needle or a small nail, punch a neat hole through the middle of the foil. Then cut another hole in the other side of the top of the box so you can look down into the bottom of the box.
Then stand with your back to the Sun and allow it to shine through the pinhole onto the bottom of the box, as you look through the other opening, and you'll see a nice small but clear image of the eclipse taking place! If the image is too faint, enlarge the hole slightly.
Get someone to hold the box and try to photograph the image of the eclipse.
4. REFLECTION IN WATER: Fill a dark bucket 4/5 full with water, shelter it from wind so there are no ripples, and look at the reflection of the Sun
PUBLIC ECLIPSE VIEWING: the Irish Astronomical Association will run public viewing events using special safe solar telescopes and filters at the following locations, from about 8.20 a.m. (weather permitting!)
Belfast: Queen's University, in front of the Whitla Hall, University Road (in association with the ARC, Dept of Physics)
Larne: Chaine Memorial Park, seafront.
Newtownards: Scrabo Hill Car Park
Portballintrae: Seafront car park
Full details of the eclipse for 62 towns and cities in Ireland, together with the islands and headlands where the greatest possible eclipse in Ireland can be seen, are given in the attached document
More details about the eclipse, including any last minute updates, will be on the IAA website www.irishastro.org.
DON'T BELIEVE ALL YOU READ IN THE PAPERS: http://www.dailymail.co.uk/news/article-2994195/Next-Friday-morning-Britain-turn-day-night-time-century-great-eclipse.html How can they get it so wrong!? In the graphic, the Moon is shown moving Left to Right instead of Right to Left.
AND they show the eclipse as a TOTAL for England.
As for their advice on eclipse glasses - how can you use them WITHOUT looking at the Sun??? Doh!!!"
Request: Eclipse viewing in L'Derry (From Prof Mark Bailey, Armagh Observatory)
10. Eclipse on Stargazing Live - look out for us! 20 March BBC1 9am. - 10 am. 'Eclipse Live' a stargazing Special. Coverage of the Solar Eclipse in Britain and Faroe Islands with Brian Cox and Dara O'Briain
NB: The BBC team in the Faroes will be based with the group led by Kate Russo and myself. So look out for us!
20 March BBC2 9pm - 10pm. 'Stargazing Live' with Brian Cox and Dara O'Briain at Jodrell Bank to share exclusive images of the Solar Eclipse, plus other astronomical topics.
11. Eclipse event at Armagh Observatory, 20 March:
Any IAA members in the area with solar observing equipment are invited to go to the Human Orrery at the Observatory early that morning (from 7.45 a.m) to share in showing the eclipse to members of the public.
12. IAS Eclipse Observing at Dunsink Observatory
Irish Astronomical Society (IAS) members and friends are invited to Dunsink Observatory on the morning of March 20th next to view the partial solar eclipse. Observing will take place from 8:30 am to 10:30 am.
Throughout the event we will have a number of solar telescopes available and we will also have eclipse shades for distribution to our members. For those arriving early, Dr.Colm Coughlan, at 7:45 am. will give a thirty minute talk entitled " What has the sun ever done for us ". Please note places for this talk are limited and booking is advisable and available on the Dunsink website. This event is free with parking on site.
13. Eclipse Viewing in Dublin: Public Viewing Event organised by Republic of Astronomy, Scopes and Space, and Dave Grennan. This is a free event open to all. It's at the Papal Cross Car Park in the Phoenix Park, Dublin starting at 8am.
14. ECLIPSE VIEWING and Light Workshop at Blackrock Castle Observatory:
On March 20th we're hosting a free observing event to give members of the public a chance to safely view the partial solar eclipse using numerous solar stations which will be set-up in our lower carpark.
Running parallel to the public viewing event we're are also running solar workshops for schools which includes safely viewing the partial eclipse at the solar stations, followed by a one hour curricular linked solar workshop, planetarium show and solar talks.
Our in-house astronomer Frances McCarthy is available for interview if you have any questions.
. Do you know how to safely view this? Make and take away a pinhole camera and a spectroscope. Explore how lenses are used to make telescopes, experiment with prisms and use solar telescopes (weather permitting). For ages 8+. February 19. 11:00 - 12:30. €10 each. Booking and prepayment essential Details at www.BCO.ie
15. Spring Equinox: The Earth will cross the celestial equator Northwards on 20 March at 22.45, marking the start of Northern spring.
16. Open Night at Armagh Planetarium, Tuesday 24 March
Times: open 7pm – 9pm. Beyond the Blue Digital Theatre Show 7.30pm
Cost: FREE
Booking: Phone on 028 3752 3689
Pre-Booking is essential as there is a limited number of tickets