Mercury transit observed at the Hvar Observatory, 09.05.2016
Written by Jaša Čalogović Tuesday, 10 May 2016 00:00
The transits of Mercury across the solar disk are rare phenomena, although Mercury orbits the Sun in just 88 days. The reason for this is that Mercury orbits the Sun with the certain angle to the ecliptic, ie. the plane that the Earth orbits the Sun. Mercury transit in Croatia was visible on 9 May 2016, started at 13:12h local time and could be seen for almost 7 hours. Unfortunately, end of transit was not visible from our region because the sunset was at 20:10h and end of transit was at 20:42h. This rare phenomena was possible to observe from Hvar, and it was recoreded in white light and H-alpha using Hvar solar telescope. The next transit of Mercury will be visible from the Croatia in 2019.Read more: Mercury transit observed at the Hvar Observatory, 09.05.2016
Mateja Dumbović received the national fellowship ”For Women in Science”
Written by Jaša Čalogović Thursday, 05 May 2016 18:14
On April 27th 2016 fellowships of the national program "For Women in Science" were awarded for the 10th time, organized by L'ORÉAL ADRIA d.o.o. and Croatian commission for UNESCO at Ministry of culture, under sponsorship of Croatian academy of sciences and arts and supported by the Croatian Rectors' conference. Among the four young female scientists awarded with this prestigious fellowship is Mateja Dumbović from Hvar Observatory, Faculty of Geodesy in Zagreb for the research she did during her PhD studies that resulted in her thesis "Analysis and forecasting of coronal mass ejection space weather effects" (supervised by dr. sc. Bojan Vršnak). The ceremony was attended by many esteemed guests, among others the Croatian president Kolinda Grabar-Kitarović and the news was greatly covered by Croatian press.Read more: Mateja Dumbović received the national fellowship ”For Women in Science”
Festival of science 2016 in Hvar
Written by Jaša Čalogović Thursday, 05 May 2016 16:33
From 21 to 23 April 2016 Festival of Science was organized at city hall in the town of Hvar, and this year's festival theme was "Science and Art". The event was organized by the Observatory Hvar and the Elementary School of Hvar, Stari Grad, Jelsa and the Archaeological Museum in Zagreb.Science Festival is being held for the 14th consecutive year in Croatia and its goal is to bring the science to pupils of primary and secondary schools and the entire interested general public. This year, the Science Festival was organized in 18 cities in Croatia, and it was the second time that city of Hvar hosted it. Compared to the last year, organizers offered a much richer program and the Festival in Hvar lasted for three days, that was visited by students of almost all schools on the island (elementary school of Hvar, Stari Grad and Jelsa).
CORAMOD workshop Hvar 2015
Written by Jaša Čalogović Saturday, 06 June 2015 11:30
A workshop was held at the Hvar Observatory from 26 to 29 May 2015 with general topics on the cosmic ray modulation, Forbush decreases, coronal mass ejection initiation and propagation, and magnetic clouds in the interplanetary space. There were 14 participants from the Physics department of the University of Kiel, Physics Institute of the University of Graz, Space Research Institute in Graz and Hvar Observatory. Photos from the workshop are available here.
Hvar Observatory participated in 13th Festival of Science
Written by Jaša Čalogović Thursday, 30 April 2015 11:40
Festival of Science with special topic "the Sun" was held for the first time in the Hvar town loggia on 20th April 2015, organized by Primary school Hvar and Hvar Observatory. The aim of festival is promote and raise awareness of science, technology and the environment with the aim of getting children interested in science and technology. The program consisted of the exhibition of student's artwork, a workshop "Funny quiz about the Sun" with more than 40 participants and a lecture "Why and how do we study our nearest star – the Sun?". A promotional/educational stand was set, where information was presented about Hvar Observatory, the Sun and the International Astronomical Union initiatives. Additional educational interactive stand was also set, where prism experiment was performed and that offered several puzzles of the Sun in different colors. During the day the visitors – students, teachers and parents were observing the Sun through the telescope where several sunspots were visible, while in the evening observations of the Moon, Venus, Jupiter and Orion nebula were organized with amateur telescopes. During the Festival of Science, from 20. to 25. April 2015, staff members of Hvar Observatory gave also two public lectures in Astronomy Center of Rijeka (23.4.) and organized workshop (24.4.) and lecture (25.4.) in Technical museum, Zagreb.
Pictures from Festival of Science in Hvar are available here.
Read more: Hvar Observatory participated in 13th Festival of Science
New space weather forecast tool - FDFT
Written by Mateja Dumbovic Wednesday, 11 March 2015 14:29
New space weather forecast tool „Forbush decrease Forecast Tool (FDFT)" is now available at Hvar Observatory webpage. FDFT is based on an empirical probabilistic model for the estimation of the Forbush decrease magnitude based on the remote CME/flare observations. It uses CME-speed, CME width, associated flare source position, associated flare soft X-ray peak intensity, and interaction parameter (likeliness of the CME-CME interaction) as an input. It provides Forbush decrease (FD) magnitude probability distribution and expected FD magnitude interval as an output. The details regarding the forecast method and the evaluation will be described in detail in the manuscript "Forbush decrease prediction based on the remote solar observations" by Dumbović et al., which is in preparation.Our technician Nikša Novak retired after 36 years
Written by Mateja Dumbovic Tuesday, 10 February 2015 14:31
Nikša Novak, technician at Hvar Observatory was retired at the begining of this year, after 36 years of employment at Hvar Observatory. Nikša was irreplacable in keeping the Hvar Observatory running smoothly, but also one of the most diligent observers with double solar telescope. Therefore, his colleagues organized a farewell party for him on 28.01.2015. at the Observatory and awarded him a convenient farewell present - a woodcut of Nikša observing with the double solar telescope in the early days of his employment.Proceedings and photos from XIIIth HAC
Written by Jaša Čalogović Sunday, 05 October 2014 22:51
The Proceedings of the XIIIth Hvar Astrophysical Colloquium will be published in a special volume of the Central European Astrophysical Bulletin. The deadline for submitting the manuscripts is December 1st, 2014. All other details about the proceedings can be found here.
Photos from XIIIth HAC social events are uploaded to photo gallery here. If you also wish to share your pictures in this gallery please resize your pictures to size smaller than 1000 pixels (by width or height) and send them with mail to
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Peter Foukal visted Hvar Observatory
Written by Davor Sudar Thursday, 02 October 2014 20:09
Peter Foukal, member of U.S. National Academy of Sciences Panel on Sun-Climate Influences and the author of the book Solar Astrophysics, visited the Hvar Observatory on September 20th, 2014. Apart from showing the observatory to the distinguished guest, we also used this opportunity for taking some photos.XIIIth Hvar Astrophysical Colloquium
Written by Jaša Čalogović Sunday, 24 August 2014 00:00
XIIIth Hvar Astrophysical Colloquium: Physics of the Solar Atmosphere will be organized from 22. to 26. September 2014 in Hvar, Croatia. The scientific sessions will include following sessions: Global Sun and Solar Cycle, Observing Techniques and Data Archives, Plasma and MHD Processes, Flares and CMEs, Space Weather and Space Climate.Page 4 of 6
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