Archive for European Space Agency

JWST: Nice Telescope, Shame about the Name…

Posted in LGBTQ+, Science Politics, The Universe and Stuff with tags , , , , , , , on October 17, 2021 by telescoper
The JWST deployable mirror undergoing tests

I heard last week that the ship carrying the James Webb Space Telescope (JWST) arrived safely in French Guiana and is now being prepared for launch on an Ariane-5 rocket at the European Space Agency’s facility at Kourou. Since the telescope cost approximately $10 billion there was some nervousness it might have been hijacked by pirates on the way.

I’m old enough to remember JWST when it was called the Next Generation Space Telescope NGST); it was frequently discussed at various advisory panels I was on about 20 years ago. Although the basic concept hasn’t changed much – it was planned to be the successor to the Hubble Space Telescope working in the infrared and with a deployable mirror – at that time it was going to have an even bigger mirror than the 6.5m it ended up with, was going to be launched in or around 2010, and was to have a budget of around $600 million. About a decade ago cost overruns, NASA budget problems, and technical hitches led to suggestions that it should be cancelled. It turned out however that it was indeed too big too fail. Now it is set for launch in December total cost greater than ten times the original estimate.

I know many people involved in the JWST project itself or waiting to use it to make observations, and I’ll be crossing my fingers on launch day and for the period until its remarkable folding mirror is deployed about a fortnight later. I hope it goes well, and look forward to the celebrations when it does.

There is a big problem with JWST however and that is its name, which was changed in 2002 from the Next Generation Space Telescope to the James Webb Space Telescope after James E. Webb, a civil servant who was NASA’s chief administrator from 1961 to 1968.

It’s not uncommon for scientific space missions like this to be named after people once the proposal has moved off the drawing board and into serious planning. That happened with the European Space Agency’s Planck and Herschel to give two examples. In any case Next General Space Telescope was clearly never anything but a working title. Yet naming this important mission after a Government official always seemed a strange decision to me. Then news emerged that James Webb had enthusiastically cooperated in a McCarthyite purge of LGBT+ people working in government institutions, part of a wider moral panic referred to by historians as the Lavender Scare. There have been high-profile protests (see, e.g., here) and a petition that received over a thousand signatures, but NASA has ruled out any change of name.

The main reason NASA give is that they found no evidence that Webb himself was personally involved in discrimination or persecution. I find that very unconvincing. He was in charge, so had responsibility for what went on in his organization. If he didn’t know then why didn’t he know? Oh, and by the way, he didn’t have anything to do with infrared astronomy either…

It’s a shame that this fantastic telescope should have its image so tarnished by the adoption of an inappropriate name. The name is a symbol of a time when homophobic discrimination was even more prevalent than it is now, and as such will be a constant reminder to us that NASA seems not to care about the many LGBT+ people working for them directly or as members of the wider astronomical community.

P.S. As an alternative name I suggest the Lavender Scare Space Telescope (LSST)…

Memories of Philae

Posted in History, The Universe and Stuff with tags , , , on November 12, 2020 by telescoper

It seems that today is the sixth anniversary of the day (November 12th 2014) that the probe Philae, having detached from its parent spacecraft Rosetta, and subsequently landed successfully (ish) on the Comet 67P/Churyumov-Gerasimenko.

I didn’t realise it was so long ago, but who could forget the feeling of intense excitement we felt on that day as Philae approached its objective?

Not the Euclid Consortium Meeting

Posted in Biographical, Euclid, Maynooth, The Universe and Stuff with tags , , on May 4, 2020 by telescoper

It’s a bright sunny Bank Holiday Monday and I’m here in my flat in Maynooth taking a coffee break before resuming work from home.

Before the Covid-19 outbreak started I had imagined that I’d be spending this week (or at least most of it) in Sitges near Barcelona for the annual Euclid Consortium Meeting which was planned to take place there. That has understandably been cancelled and replaced with a virtual meeting. Yet more Zoom sessions beckon…

Over the past weeks my workload has increased enormously but I’ve tried to clear the decks a little so I can tune in to some of the sessions but I won’t be able to make them all or even most.

I hope the virtual meeting goes well. Euclid is due to be launched in 2022 so time is getting short and there is much preparatory work still to do.

Well, talking of work I better get back to it! The first plenary is not until this afternoon and I’ve lots to do before then.

I wonder if normality will have returned in time for there to be a Euclid Consortium Meeting next year?

The Gaia video!

Posted in The Universe and Stuff with tags , on October 24, 2019 by telescoper

I’ve blogged quite a few times about the European Space Agency’s Gaia mission (see this tag). Social media brought this nice new video to my attention this morning so I couldn’t resist adding it to the collection. I don’t think it accompanies any new data release or scientific results but it’s very impressive anyway!

The Comet – The Video!

Posted in The Universe and Stuff with tags , , , on August 14, 2019 by telescoper

I couldn’t resist sharing this remarkable video about the rendezvous and subsequent landing of the European Space Agency’s Rosetta spacecraft on the comet Churyumov-Gerasimenko 67P. You can find a few posts I did about this at the time (2014) here. Here’s one of the memorable from one of those posts:

 

Anyway, after the end of the mission, in 2017, the European Space Agency released over 400,000 images from Rosetta, based on which Christian Stangl and Wolfgang Stangl worked together to create this short film. The sequences are digitally-enhanced versions of real pictures taken by the Rosetta Probe and they’re stunning!

Euclid Updates

Posted in Euclid, The Universe and Stuff with tags , , , , on June 17, 2019 by telescoper

Following the Euclid Consortium Meeting in Helsinki a couple of weeks ago, here are a couple of updates.

First, here is the conference photograph so you can play Spot The Telescoper:

(The picture was taken from the roof of the Finlandia Hall, by the way, which accounts for the strange viewpoint.

The other update is that the European Space Agency has released a Press Release releasing information about the location on the sky of the planned Euclid Deep Fields. Here they are (marked in yellow):

These deep fields amount to only about 40 square degrees, a small fraction of the total sky coverage of Euclid (~15,000 square degrees), but the Euclid telescope will point at them multiple times in order to detect very faint distant galaxies at enormous look-back times to study galaxy evolution. It is expected that these fields will produce several hundred thousand galaxy images per square degree…

Selecting these fields was a difficult task because one has to avoid bright sources in both optical and infrared (such as stars and zodiacal emission) so as not to mess with Euclid’s very sensitive camera. Roberto Scaramella gave a talk at the Helsinki Meeting showing how hard it is to find fields that satisfy all the constraints. The problem is that there are just too many stars and other bits of rubbish in the sky getting in the way of the interesting stuff!

 

For much more detail see here.

 

Notes from Euclid 2019

Posted in Biographical, Maynooth, The Universe and Stuff with tags , , , , on June 4, 2019 by telescoper

I’ve just had my breakfast so I thought I’d do a quick post before the start of play on of the 2019 Euclid Consortium Meeting in Helsinki. Previous Euclid Consortium meetings were held in: Bologna (2011); Copenhagen (2012); Leiden (2013); Marseille (2014); Lausanne (2015); Lisbon (2016); London (2017); and Bonn (2018). I’ve only attended the last two: I was non-Euclidean before that.

Finlandia Hall

The venue is the Finlandia Hall, which looks splendid from the outside. I passed it during my stroll yesterday afternoon just so I could be sure where it is. It’s easy to find as it is very central and on the edge of a lake next to a major thoroughfare (Mannerheimintie). . I arrived yesterday to beautiful sunny weather but that has changed – it is pouring down as I write this, with thunder and lightning to boot. I don’t have to leave the Hotel for an hour or so, however, so perhaps it will have passed. There’s no sign of that just yet but I brought a brolly, and it’s only 15 minutes away from the Hotel on foot.

According to the web page there are 408 participants at the last count. I expect there’ll be quite a few people I know here but I haven’t met any yet. The Euclid Consortium has well over a thousand members, but obviously they’re not all here this week. I seem still to be the only representative of Ireland.

There’s a nice webpage showing all the institutions around the world who belong to the consortium behind the European Space Agency’s Euclid Mission. Here’s a screen grab that shows all the logos of all the institutions involved in this very large Consortium:

There are so many that it’s hard to see them all, but if you look very closely about half way down, among the Ms, you will see Maynooth University among them. Ireland is a member state of the European Space Agency, by the way.

Top tips for participants include not to tip:

Here is the latest timeline for the Euclid mission: launch around June 2022 followed by six years of operations.

If you want to follow on Twitter the relevant hashtag is #Euclid2019.

The Tenth Anniversary of the Herschel/Planck Launch

Posted in Biographical, Cardiff, The Universe and Stuff with tags , , on May 14, 2019 by telescoper

A little birdie told me (via a tweet) that today is the 10th anniversary of the launch of the ESA Planck and Herschel satellite missions. Can it really be so long ago?

Anyway, both were superbly successful and both involved many friends and former colleagues from Cardiff and elsewhere, so I thought I’d reblog this post which I wrote on the day of the launch (on May 14 2009)….

telescoper's avatarIn the Dark

The Big Day has finally arrived!

I’ve managed to submit my paper to the journal and the ArXiv before the little shindig we’ve been planning for the Planck and Herschel launch gets under way at 1pm. Business as usual so far, though.

Strangely, I haven’t managed to get nervous yet, although I have to say  there are many anxious faces around the department. I just keep telling people how much simpler their life is going to be if it all goes wrong, without all that messy and unnecessarily complicated data to deal with. It bothers me sometimes that I don’t often get nervous expect when watching sport. Mind you, being  a Newcastle United supporter probably makes me more nervous more often than most people.

Anyway, at times like this a  stiff upper lip is obviously called for. Anyone who cracks now is clearly not officer material. There’ll be plenty of…

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Nature After Planck…

Posted in Maynooth, The Universe and Stuff with tags , , , , , , on July 24, 2018 by telescoper

After last week’s short update about the last tranche of papers from the European Space Agency’s Planck Mission it’s time for another short update about a piece in Nature (by David Castelvecchi) that explains how researchers are moving to smaller projects studying different aspects of the cosmic microwave background.

In the spirit of gratuitous self-promotion I should also mention that there’s a little quote from me in that piece. My comment was hardly profound, but at least it gets Maynooth University a name check…

Much of Davide’s piece echoes discussions that were going on at the meeting I attended in India  last October, but things have moved on quite a bit since then at least as far as space experiments are concerned. In particular, the proposed Japanese mission Litebird has been shortlisted for consideration, though we will have to wait until next year (2019) at the earliest to see if it will be selected. An Indian mission, CMB-Bharat, has also emerged as a contender.

While the end of Planck closes one chapter on CMB research, several others will open. These are likely to focus on polarization, gravitational lensing and on cosmic reionization rather than refining the basic cosmological parameters still further.

Planck’s Last Papers

Posted in The Universe and Stuff with tags , , , , on July 17, 2018 by telescoper

Well, they’ve been a little while coming but just today I heard that the final set of a dozen papers from the European Space Agency’s Planck mission are now available. You can find the latest ones, along with the all the others, here.

This final `Legacy’ set of papers is sure to be a vital resource for many years to come and I can hear in my mind’s ear the sound of cosmologists all around the globe scurrying to download them!

I’m not sure when I’ll get time to read these papers, so if anyone finds any interesting nuggets therein please feel free to comment below!