Tag Archives: photo

The Magellanic Clouds over La Silla

The Milky Way, our home galaxy is not alone in the Local Group of galaxies in the Universe, there are several smaller or larger satellite galaxies orbiting around it. Two of these are visible to the unaided eye, the Large and Small Magellanic Clouds (the LMC and the SMC). These are both irregular galaxies, both only visible from the Southern hemisphere.

First, here is a wide angle view of the sky towards the southern celestial pole. (Canon EOS 7D + Canon EF-S 15-85mm f/3.5-5.6 IS USM lens @ 15mm, f/3.5, ISO1600, 69s.)

Then from a few hours later, here is another shot showing the Magellanic Clouds next to the dome of the ESO 3.6 metre Telescope. The strong green and orange glow above the horizon is airglow. (FUJIFILM X100S, 23 mm, f/2, ISO 3200, 15s.)

The following two shots are both made from 10 individual images by calculating their average to achieve a better signal-to-noise ratio (a.k.a. to have nicer images with low noise). Each individual frame was taken with a Canon EOS 7D + Canon EF 50mm f/1.4 USM lens, f/2, ISO1600, 20s.

The Milky Way over La Silla

One of the nice things about the Southern sky is the ability to see the brightest, central parts of our own galaxy – the Milky Way – spreading across the midnight sky, from horizon to horizon, through the zenith. You can see four photos below, each stacked together from several individual exposures. (Click on the images for the – very much larger – originals!)

First, here is the brightest part of the Milky Way, looking towards the centre of the galaxy (and the Scutum, Sagittarius, and Scorpius constellations). The green glow towards the bottom is airglow near the horizon. (From 27 images with a Canon EOS 7D + Canon EF 50mm f/1.4 USM lens, f/2, ISO1600, 10s.)

Here is a zoom-in on the galactic centre (average of 20 individual exposures taken with a Canon EOS 7D + Canon EF 50mm f/1.4 USM lens, f/2.8, ISO1600, 10s).

Then here is the southern part of the Milky Way which is not visible from the Northern hemisphere, looking towards the Centaurus, Crux, and Carina constellations. (From 10 images with a Canon EOS 7D + Canon EF 50mm f/1.4 USM lens, f/2, ISO1600, 10s.)

And at last, but definitely not least, here is the Milky Way from horizon to horizon (from Cygnus to Carina), with a bit less post processing. Do yourself a favour, and really click for the large version! (From 21 images with a FUJIFILM X100S, 23 mm, f/2, ISO 3200, 15s)

And remember, these images are just for fun, my observing run only starts tomorrow, and while it will produce a lot of interesting data, it will not result in pretty images like these!

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La Silla – before observing

If you love rocky landscapes, mountains, and deserts, then La Silla is for you. I am only at the beginning of my stay here, but I have seen so many beautiful things, that it was really difficult to make a selection from all the pictures I took. We had a small hike after lunch to a nearby place where several petroglyphs (rock engravings) can be seen on boulders lying around the slopes of the mountain. It was still almost fully overcast when we left, but by the time we had to turn back, the sky cleared up and the desert showed its colours. Here are the best shots from the afternoon, tomorrow I will come back with some pictures of the Southern sky! Then as the day (night) after tomorrow my observing run starts, I might have to spend some time on actual work too ;)

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Chile, here I am!

After a short TGV ride from Brussels to Paris on 1st class (and almost getting chased down by the French border control after not wanting to stop for their undercover agent at the train station – yeah, sorry, but anyone can wave in front of you with a fake ID…), and a flight of 14 hours and 35 minutes (I had the same flight duration from Abu Dhabi to Sydney last year), I arrived to Santiago de Chile. I came to South America for the first time in my life, and I will be observing at the Swiss 1.2 metre Leonhard Euler Telescope at the La Silla Observatory (ESO).

The flight was really long, and with much more turbulence above the equator upon entering the airspace over Brazil than what I am comfortable with. Anyway, these Boeing 777s are luckily pretty flexible. Among others, I watched The Secret Life of Walter Mitty, which I found a really nice feel-good movie, with a great soundtrack. Unluckily I did not manage to sleep much, partly because the Air France economy class is simply crap, but mainly because while other people fell asleep almost immediately after take off, I wanted to sleep only after shifting to Chilean time, which coincided with others waking up and turning their reading lights on… Anyway, I got picked up at the airport by a taxi arranged by ESO (which by-the-way stands for European Southern Observatory), and after a short drive, ended up in the ESO Guest House in Santiago. It was quite an experience driving past dirt an poverty around the outskirts of the city, then the modern financial district, and ending up in the very green area of the guest house. The building itself is a colonial hacienda, with an inner garden, a nicely furnished living room, and very friendly staff. More importantly, with great food! I have not done much on the afternoon and the evening besides posting the two previous blog posts, simply because by nine I was so tired, that I had to go to bed. I did not take more than 5 seconds to fall asleep.

The next morning I finally made it to the shower, then after a quick breakfast my taxi came and I took the plane to La Serena. With its 1h 15m flight time, it was nothing compared to the more than two hours I spent afterwards in the ESO transport driving up to the Observatory of La Silla. But at least I finally saw the blue sky (the weather in Santiago was pretty rainy and windy), and the Andes. The roads here are generally not the best, but the last section towards the observatory before the gate of the ESO was simply missing (only gravel), while after the ESO gate, there were more potholes than road around them. It was really bad, not only compared to the smooth roads of Mallorca… I was seriously worried about my photo equipment.

Then upon arrival, I was immediately taken to my room. End that was it. No reception, no check in like on La Palma, nothing. I was still in time for lunch, where I ran into the current observer and a few other young astronomers (and by young I mean more or less my age) too. Since I had nothing better to do, I joined them for a small excursion to the nearby (dried out) oasis and a small copper mine.

As you can see, this is a pretty dry place, a rocky desert. But a very colourful one! Now I am at the telescope, but the sky is cloudy, so we are not working tonight. Also, my run only starts on Monday, so I still have some time to walk around, and take some pictures of the Southern sky, if it clears up. Many more posts to come!

February, March, April…

Again more-or-less three months without blogging. It is getting more and more difficult to find time or motivation to write, but there are so many things I would want to remember later, and my blog is the best diary, so let’s see what you missed. (Also, since most of my written English practice comes from this blog, I have to admit that I felt quite bad about my language skills while writing this post… Another reason to write more often. Then again, there is this thing about promises and not being able to keep them, so, whatever…)

LEGO: After my mountain bike, I got myself another – much cheaper – present for my birthday: the NASA Mars Science Laboratory Curiosity Rover from LEGO! It gave me a nice evening of assembling, and now it is on display below our TV. Undoubtedly, LEGO was the best toy of my childhood – even when we got our first computer, I kept playing with it. Among my favourite constructions were a suspension bridge, and an astronomical telescope in a proper rotating dome, but I always enjoyed simply following the instructions too. Ah, those were the days! I don’t think I will ever be too old for LEGO. Maybe at one point I should get all my LEGO from Hungary, since I don’t think my brother wants to play with it… The only problem is, that 1) we probably have no space for all that LEGO, 2) there is no way we could fly them over without paying extra for the overweight bags. It is really a lot of LEGO :)

Plots: Anyone who has been reading this blog for a while must know, that I am a data-freak. While preparing my annual seminar talk for the institute I also spent some time on data-mining and visualisation using the database of observations made with the HERMES spectrograph (at the Mercator telescope on La Palma). It turned out, that I have the 3rd highest amount of observing time at the instrument. (Even without counting the time I spent there with the master students as support astronomer – if one was to add those nights to my sum, then I would be winning with quite a landslide.) As an example, here is a plot showing the distribution of all HERMES observations throughout the first 5 years of HERMES, and a plot showing their distribution on the sky near the original Kepler field (different colours mean different observing programs, the dark blue area on the first plot represents the night time, and the symbol size is connected to the exposure time).

You can see – among many other things – how seasonal some observing programs are, and how well covered the Kepler field is. This was a nice exercise with python to learn a few new things about projections and calendar-data visualisation.

Making Belgian chocolate: After my public PhD defence I got a voucher for a chocolate workshop from my colleagues, but we only managed to go and do it now, at the end of March. It was a two hour session in the Bittersweet Chocolatier in the centre of Leuven, and we got to make small praline filled chocolate easter eggs, larger chocolate figurines, and pistachio balls covered in chocolate. It was a very nice experience, even without mentioning the half kilogram of – both self made and original Bittersweet – chocolate each of us got to take home afterwards :) I think it was definitely the best PhD defence present I have seen so far.

Royal Greenhouses of Laeken: Last week my mother came for a visit, and this time she finally got to enjoy the Belgian sunshine for a bit longer than a few seconds. Her only wish was to visit the coast and take De Kusttram between a few of the coastal towns, which we did on our first full day. The weather was warm, but we still got to use our umbrellas in a short thunderstorm which caught us while walking through the dunes. I also brought along my kite, but this time there was basically no wind at all (which is extremely rare on the coast), so I could not play much with it. There were other people with kites desperately waiting for stronger winds too…

On the next day, we went to Brussels to visit the Royal Greenhouses of Laeken, which is only accessible to the public during a short, three week long period each spring. It was very beautiful, despite being a little bit crowded. Although I think that the variety of plants in the – much smaller – botanic garden of Leuven (which we visited just a few days earlier with Clio, and on the following day with my mother) is larger, there is no doubt that the architectural beauty of this place, and the amount of blooming flowers there was truly exceptional.

Work: Research usually takes more time than originally expected, but this time I really underestimated how much of it would take me to finish my latest paper. When I discovered something particularly interesting during the conference in Sydney last year, I though I could be finished with the necessary analysis before the end of the year (2013). Then we ran into various unexpected problems (shit happens when you do thing which were never done before), resulting in a delay of several months… But now, just before leaving to Chile (more about that later), I finally submitted the manuscript to the usual journal (A&A). Let’s hope the referee will find our work worthy, and I can show you (or at least post about) the results in a few months!