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Hvar Observatory Faculty of Geodesy Kačićeva 26, 10 000 Zagreb.

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Presentation on theme: "Hvar Observatory Faculty of Geodesy Kačićeva 26, 10 000 Zagreb."— Presentation transcript:

1 Hvar Observatory Faculty of Geodesy Kačićeva 26, 10 000 Zagreb

2 Double Solar Telescope at Hvar Hvar Observatory - http://oh.geof.unizg.hr

3 Double Solar Telescope at Hvar Consists of two Carl Zeiss refractors (photospheric telescope d=217mm, chromospheric telescope d=130mm) mounted as one unit on a German parallax mounting Aim to produce high resolution images of active regions on the Sun Pullnix TM-4200GE 12-bit CCD cameras allow time series with a cadence up to 30 images per minute (valuable tool to study rapid changes of chromospheric and photospheric features) Hvar Observatory - http://oh.geof.unizg.hr

4 Double Solar Telescope at Hvar Telescope control roomNew acquisition system Hvar Observatory - http://oh.geof.unizg.hr

5 Hvar Solar Telescope Photospheric observations (white light) Evolution of Sunspot group 11302 23.9.2011 08:52 UT 27.9.2011 11:40 UT28.9.2011 08:03 UT 29.9.2011 06:44 UT30.9.2011 10:19 UT03.10.2011 07:39 UT Hvar Observatory - http://oh.geof.unizg.hr

6 Hvar Solar Telescope Chromospheric observations (H  ) 04.07.2012, 11:55 UTC Sunspot group: 1515 22.09.2011, Solar flare (X1.4), sunspot group 11302 Hvar Observatory - http://oh.geof.unizg.hr

7 Hvar Solar Telescope PhotosphereChromosphere 27.10.2013, 12:02 UTC Hvar Observatory - http://oh.geof.unizg.hr

8 Hvar Solar Telescope Solar flare (M5), 02.07.2012 Chromospheric observations Hvar Observatory - http://oh.geof.unizg.hr

9 Hvar Solar Telescope Venus transit, 06.06.2012 Chromospheric observations Hvar Observatory - http://oh.geof.unizg.hr

10 65-cm Stellar Telescope at Hvar Photometric monitoring program of variable stars Hvar Observatory - http://oh.geof.unizg.hr

11 1-m Austro-Croatian Telescope (ACT) Hvar Observatory - http://oh.geof.unizg.hr

12 Solar activity and its influence on the heliosphere and geospace (solar storms) Hvar Observatory - http://oh.geof.unizg.hr

13 Influence of solar variability on Earth's climate Lightning radar station Hvar http://www.blitzortung.org Hvar Observatory - http://oh.geof.unizg.hr

14 For more information about Hvar Observatory visit us: http://oh.geof.unizg.hr

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