The UHH Research Park includes the headquarters for the East Asian Observatory, the Caltech Submillimeter Observatory, Subaru, Gemini, UKIRT, the Smithsonian Submillimeter Array and the Institute for Astronomy, plus the astronomers at the University of Hawaii at Hilo. We are one of the major centres for astronomy in the world and encourage all visitors to the JCMT to take advantage of the proximity of these institutes, and give a seminar while in Hilo. Your talk will be advertised at each of the above institutes.

Upcoming Seminar: April 24th, 2018, 2pm (HST)

Beyond the Event Horizon Telescope: the Event Horizon Imager

Location: EAO Office, Hilo

Remo Tilanus, Leiden Observatory & Radboud University, The Netherlands

After a brief introduction and status update of current observations to image supermassive black holes by the Event Horizon Telescope, I will introduce the Event Horizon Imager (EHI): a novel concept to obtain high-frequency (e.g. 690 GHz) and high-resolution VLBI images of black holes using two small space-based dishes orbiting the Earth. The two dishes will act as an stand-alone interferometer with on-board correlation and, when put into slightly different orbits effectively, create a continuous zoom lens over the timescales of one or a few months. The dense and long-term sampling will result in high-fidelity time-averaged images of nearby supermassive black holes and this relative simple approach to a space-based interferometer array keeps it within the envelope of a medium-sized mission. The VLBI group at Radboud University leads a conceptual design study to e.g. address the challenge tracking of the phase centers of each satellite with sub-mm accuracy.


Upcoming Seminar: May 1st, 2018, 2pm (HST)

Astrochemistry Tools: From Star Formation to the Cradle of Life

Location: EAO Office, Hilo

Siyi Feng, EACOA fellow, NAOJ/NAOC/ASIAA

Thanks to the performance of the state-of-the-art radio telescopes, increasing detections of molecular species in the ISM improves our knowledge of the Universe. How are the formation and destruction processes of these interstellar molecules? What can these detections tell us about the star and planet formation? What is the link between the complex organics in the ISM and the seed of our lives? These fundamental questions are still unclear.

In this talk, I will start with presenting my chemical studies towards a series of high-mass star-forming regions (HMSFRs), where the intensive dynamics drive complex chemistry, bringing in prebiotic species. From the observations of the HMSFRs spanning all evolutionary stages at mm wavelengths, I will show that how the molecular lines play the role of (1) characterizing these chemically complicated regions and (2) diagnosing the evolutionary status of the kinematically complicated regions.

Later, I will also introduce some large observational projects I am currently leading towards the initial stage of both high-mass and low-mass star-forming regions. The preliminary results of these projects reveal the capability of astrochemical tool in (1) studying the high-mass and low-mass star formation on a global scale and (2) understanding the missing link from the star-forming region to the planetary system.

Where and How:

EAO seminars are (usually) held in the second floor conference room at the East Asia Observatory, 660 N. A’ohoku Place, Hilo, Hawaii. Please note that access to EAO is possible only through the main entrance (through the side doors facing Subaru).

If you would like to view the seminar via Polycom, please contact the helpdesk well in advance of the talk and we will make sure it’s switched on!

Our Polycom contact details are available on request.

The EAO phone number is: (808) 961-3756. A full list of past seminar speakers can be found here for 2018, here for 2017, here for 2016 and here for 2015. These pages also contain links to PDF copies of the seminar slides, where available.

To join the Seminar e-mail list:

EAO Seminars are sent out via If you wish to join this seminar list please send an e-mail to

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