Resumen del Encuentro Europeo sobre Cometas (en inglés)
Nota: Están disponibles las presentaciones (enlaces)
Report from European comet conference – Ondřejov 2015
Report from ECCO’15.
After a very long time, amateur observers, researchers and professional astronomers from Europe, which are involved in comets had a good chance for meeting. Last weekend (5.-7 June) there was a conference named „European comet conference – Ondřejov 2015“ in Ondřejov Observatory.
Officially there was 19 participators from 7 countries, including representatives of British Astronomical Association (BAA), Cometary ARchive for Afrho (CARA), European Space Astronomy Centre (ESAC), VdS-Fachgruppe Kometen (FGK) and Society for Interplanetary Matter (SMPH in Czech).
Friday was more unofficial day, most of participators meet each other during a dinner in Prague before departure of bus which drive the participators to their accommodation. To who reached Ondřejov already that day were prepared an unofficial grilling sausage event at the Ondřejov fireplace.
On Saturday a conference itself has started. We had a warm welcome word from representative of Astronomical Institute which hosted our conference. After that the most expected program has started. I would absolutely honestly say that there were no better or worst presentations, every single presentation was filled with interesting informations.
First talk belongs to Thomas Lehmann and his speak about Total Comet magnitudes from CCD/DSLR photometry. In his presentation he shows an excellent way, how to produce a excellent CCD DSLR measures of comet magnitudes. Such pattern should be reproduced and used by many comet observers in future, as its results are very consistent and giving a well agreement also with visual data!
Second talk belongs to me about my research of Size distribution of O-C comet nuclei. The presentation shows a different look on cometary nuclei size measurements and resulting into a preliminar results which are in well agreement to which we would expect to see. It also gives a sense to amateur astrometry and photometry (both visual and CCD) measures, because it is mainly based on them.
After a lunch break, which were in order to save a time managed in the seminar room itself, there was a speak of Daniel Fisher, which unfortunately had to replace originally expected speech of Michael Jager, who unfortunately did not manage to come. However Daniel filled the time with a very excellent presentation of his quest for the ultimate image of the Eclipse Comet of 1948. The presentation shows a truly detective work about a very interesting object. However his finding is not at the end and it have to continue as nearly all researchers involved in picturing of this comet has already died and there is almost no trace for their original work and valuable images.
Next word was given to Richard Miles who devoted his life to one of most interesting comet – 29P/Schwassmann-Wachmann a most often outbursting comet at all. His presentation about Comet 29P/S-W1: the most enigmatic object in our Solar System gives a very high insight into what is happening to this comet and offered a very new and surprising alternative explanation on which is causing the outbursts. The original explanations seems to fails in light of new findings, so Richard’s offered a absolutely new theory of “cryovolcanism”.
He was the succeeded by Nick James and instead of only introducing Amateur comet work in the UK Nick brings much more questions about the actual state of comet amateur astronomy. Original organization ICQ fails in its role of observers coordination and need to be replaced with much more diversified organization. His speech was later a very good starting point for a discussion about future of amateur comet research. All participators agreed that there must be a new global organization such as AAVSO or IMO for comets which will take the responsibility for collecting data and giving a support to observers.
In the meantime, participators visited a largest 2-meter telescope in observatory and the 65-cm which is actually involved in research of binary asteroids.
A next word was given to Michael Kueppers from ESAC, which bring us a most fresh Overview of Rosetta results from the source. A lot of interesting data about the Rosetta mission and its results also from Philae module, all in one place. It is hard to say which part of presentation was the most inspiring as the presentation was filled only with such kinds of informations. One of most interesting information was the presence of huge dust grains and picture of them as they are ejected by gas from surface. Of course many questions after presentations was pointed to Philae status.
After that, participators joined a tour into old observatory part and after that we enjoyed a dinner in nearest restaurant.
On Sunday, we started again with a small breakfast already in place. Program started with 2 presentations of Uwe Pilz. First one was to his very interesting Dust tail simulation and also a comparison of his results with real comets. A very interesting piece of software which can be used for predicting new comet tails length and geometry and maybe also for estimating a particle size distribution for past comets. His second presentation was Kphot review, the program which is trying to calculate visual equivalent magnitude for a CCD measure.
Second presentation belongs to Jakub Koukal and his research of toroidal meteor streams which is changing our view on whole complex, as he found, the complex is looking as another large meteor stream complex as the one from comet 2P/Encke, but this is from different comet. However searching for A most surprising source of Toroidal meteor complex is still in progress.
Next presentation was a distant one, Taras Prystavski and Kiril Grishin even facing a huge technical difficulties was giving us Introduction of CometBase a very interesting web to fulfill some needs of today observers.
Because we manage to finish lunch earlier, we still had a time and we luckily filled the time with unexpected presentation of Padma Yamandra-Fisher who was supposed to speak about 67P and its observing campaign day before, but because of her computer failure it seems to be canceled. But she manage to connect this day and presentation was very successful. A very huge help for all observers, who wants to participate and help to Rosetta mission about 67P/Churyumov-Gerasimenko.
A next talk belongs to Sergei Schmalz which presented Comets in digital plate archives on the example of APPLAUSE database. He well explained how it works, how data can be extracted, it is really a large online database with a lot of plates to be inspected!
Last presentation was again streamed speech from Ignacio Ferrin about An evolutionary diagram for comets . Ignacio explains that we have a evolutionary diagrams of stars, so why don’t have one for comets too? He explains how he is trying to create such diagram step by step.
This was the last word and we had to say goodbye to Ondřejov observatory and its staff which helps us a lot to create such event!
Thanks everyone for participating and helping.