Advertisement

We need your help now

Support from readers like you keeps The Journal open.

You are visiting us because we have something you value. Independent, unbiased news that tells the truth. Advertising revenue goes some way to support our mission, but this year it has not been enough.

If you've seen value in our reporting, please contribute what you can, so we can continue to produce accurate and meaningful journalism. For everyone who needs it.

Dave Grennan in his home observatory in Raheny, complete with sliding roof, from where he made the first disovery of a supernova in Irish astronomy

'Champagne' supernova spotter celebrates with a nice cup of tea

TheJournal.ie has first photograph Irish amateur astronomer took of supernova, the “biggest thing ever discovered in Irish astronomy”

AN IRISH AMATEUR astronomer who discovered the first supernova ever spotted from Ireland has said he’s lucky to have a supportive wife who brings him cups of tea when he’s stargazing in the back yard.

Dave Grennan from Raheny in Dublin made the biggest discovery in Irish astronomy two weeks ago when he saw a 290-million-year-old star exploding through his home telescope. He had his discovery confirmed by Professor Stephen Smart in Queens University in Belfast. It was taken for analysis to one of Europe’s largest telescopes, based in Palma in the Canary Islands, and was confirmed to be a supernova on Monday night.

Speaking to TheJournal.ie this morning, Grennan described the moment he received the news that he had in fact spotted the supernova which has been officially named 2010 1K:

I danced a little jig. It was half eleven on Monday night when the International Astronomical Union issued an electronic telegram to astronomers all over the world announcing the discovery. There was lots of hugs and kisses here. My poor little dog Charlie is still looking at me: we only got him a few weeks ago, he’s a rescue dog, and he got lots of hugs too.

Just below, TheJournal.ie has published an exclusive first picture of the photograph Dave took of the supernova 2010 IK:

Supernova 2010 IK
1 / 3
  • Supernova 2010 IK

  • Dave and Carol Grennan

    Dave Grennan with wife Carol who has been "very understanding" about his passion for astronomy - and the large observatory he built in their back yard
  • Tychos Supernova

    This image by NASA is of the Tycho supernova. Supernovas are massive stars that explode and are in the process of dying.

And despite reports to the contrary, Dave and wife Carol didn’t crack open a bottle of bubbly to celebrate a ‘champagne’ supernova. He said:

That was a bit of a fabrication. We had a little tipple but there is a Star party at Birr in Offaly on Saturday where the observatory is and I expect there will be a celebration then.

I searched through 2,611 galaxies looking for this.

I had a lot of false starts – it could have been an asteroid in the wrong place at the wrong time and I had to check to make sure it wasn’t a flaw on the camera. I double, triple, quadruple checked it before sending the photograph to colleagues in the UK to double check it. Then it was a case of filing the report and getting Professor Smart to confirm it. You can’t get too excited until you know for sure because a false report will sully your reputation.

Grennan works as a software developer for CIE which means he can’t stay up too late on weeknights to look at the stars. He built a shed, complete with sliding roof, in the back yard of his terraced house to house his equipment. His wife Carol is “very supportive”, he says:

She is very understanding. She loves to come out with a cup of tea and ask me, ‘How are things going tonight?’. Sometimes she helps me out with little things. She’s quite good but the most important thing she does is give me space to do what I do. Without an understanding wife, you’d be getting the whole, ‘Come in out of the cold, there’s hoovering to be done!’

His interest in astronomy was cultivated from childhood by another supportive woman, his mother.

From the age of about five, six, seven I would sneak out into the garden to look up at the stars and my late mum would come out and bring me a coat and put a hat on me. In 2008, when I was lucky enough to see an asteroid, I named it Catherine Griffin after her.

His only worry now is that his neighbour will still be talking to him after photographs of his back-yard observatory in today’s Irish Independent and Irish Times included her washing line in the background. He laughed:

I’m dreading talking to my neighbour. She had a famous washing line for the day. I didn’t see them out last night otherwise I would have warned her to bring in her clothes before the photographer came!

David Moore of Astronomy Ireland said that Grennan’s discovery was “the biggest thing ever discovered in Irish astronomy”. Speaking to TheJournal.ie this morning he added that Dave is probably Ireland’s top amateur astronomer and that the supernova – the death explosion of a massive star – he discovered lies on the outer edge of the universe, 300 million light years away. He explained:

We live in a galaxy which is like a city of stars, if you will. You only see a star explode once every 100 years so you have to look out into other galaxies to see them exploding there. There are dozens of supernovas discovered every year but these are by professional astronomers in huge observatories in places with clear skies. I knew about Dave’s potential discovery two weeks ago and I had been pestering him regularly for an update. It had to go through the official channels but it is wonderful.

Readers like you are keeping these stories free for everyone...
A mix of advertising and supporting contributions helps keep paywalls away from valuable information like this article. Over 5,000 readers like you have already stepped up and support us with a monthly payment or a once-off donation.

Close
Comments
    Install the app to use these features.
    Mute Matthew Donoghue
    Favourite Matthew Donoghue
    Report
    Sep 15th 2012, 12:27 PM

    The swedish are right why should we have a fed like bank in the EU?

    40
    Install the app to use these features.
    Mute Bilbo Baggins
    Favourite Bilbo Baggins
    Report
    Sep 15th 2012, 12:36 PM

    They are certainly right from their point of view their not even in the euro, its regulation we need rather than rescue. Noone knows this better than the Swedes having had their own banking crash in the 90′s

    21
    Install the app to use these features.
    Mute Robin Hilliard
    Favourite Robin Hilliard
    Report
    Sep 15th 2012, 12:46 PM

    Because proper banking supervision may well have helped prevent some of the property bubble and most if not all of the banking crash.

    13
    See 1 more reply ▾
    Install the app to use these features.
    Mute Matthew Donoghue
    Favourite Matthew Donoghue
    Report
    Sep 15th 2012, 2:27 PM

    you should read the article again its not about regulation its about having an organization that contols how are taxes are spent but isnt under control of any goverment.

    5
    Install the app to use these features.
    Mute Declan Noonan
    Favourite Declan Noonan
    Report
    Sep 15th 2012, 12:42 PM

    I have to agree with the swedes. They have a great country- why should they allow themselves to be dragged down by other countries.

    37
    Install the app to use these features.
    Mute Gagsy 99
    Favourite Gagsy 99
    Report
    Sep 15th 2012, 1:44 PM

    And Abba.

    7
    Install the app to use these features.
    Mute Metassus
    Favourite Metassus
    Report
    Sep 15th 2012, 2:52 PM

    Good man, Anders. Just tell them “resistance is futile.”

    5
    Install the app to use these features.
    Mute Ronald Speelman
    Favourite Ronald Speelman
    Report
    Sep 15th 2012, 9:18 PM

    Yeh right when they get EU money then is everything ok. But when they have to pay they against it.

    3
    Install the app to use these features.
    Mute Anthony O Donnell
    Favourite Anthony O Donnell
    Report
    Sep 16th 2012, 5:07 PM

    Everyone wants a European
    Union which favours their national self interest , that’s why it doesn’t work , scrap it and let’s get real.

    1
Submit a report
Please help us understand how this comment violates our community guidelines.
Thank you for the feedback
Your feedback has been sent to our team for review.