Cosmic Diary Logo

Meet the astronomers. See where they work. Know what they know.


The Project:

The Cosmic Diary is not just about astronomy. It's more about what it is like to be an astronomer.

The Cosmic Diary aims to put a human face on astronomy: professional scientists will blog in text and images about their lives, families, friends, hobbies and interests, as well as their work, their latest research findings and the challenges that face them. The bloggers represent a vibrant cross-section of female and male working astronomers from around the world, coming from five different continents. Outside the observatories, labs and offices they are musicians, mothers, photographers, athletes, amateur astronomers. At work, they are managers, observers, graduate students, grant proposers, instrument builders and data analysts.

Throughout this project, all the bloggers will be asked to explain one particular aspect of their work to the public. In a true exercise of science communication, these scientists will use easy-to-understand language to translate the nuts and bolts of their scientific research into a popular science article. This will be their challenge.

Task Group:

Mariana Barrosa (Portugal, ESO ePOD)
Nuno Marques (Portugal, Web Developer)
Lee Pullen (UK, Freelance Science Communicator)
André Roquette (Portugal, ESO ePOD)

Jack Oughton (UK, Freelance Science Communicator)
Alice Enevoldsen (USA, Pacific Science Center)
Alberto Krone Martins (Brazil, Uni. S. Paulo / Uni. Bordeaux)
Kevin Govender (South Africa, S. A. A. O.)
Avivah Yamani (Indonesia, Rigel Kentaurus)
Henri Boffin (Belgium, ESO ePOD)

FIRST@LICK: Bring the reinforcement!

I mentioned in this blog that the FIRST instrument is the result of collaborations between several engineers & astronomers from everywhere in the world. On July 20, I went to the San Jose Airport near SETI Institute to meet in person for the first time in person Takayuki Kotani to give him a ride to the Lick Observatory.

Takayuki Kotani "karoakeing" at the Lick Observatory 36in Great Refractor

Takayuki Kotani and his Karaoke addiction. :-)

Takayuki did most of  his Ph.D. at the observatoire de Paris on the OHANA project (Optical Hawaiian Array for Nanoradian Astronomy) led by G. Perrin. OHANA, which means “family” in Hawaiian,  consists in putting together the telescopes on the top of the Mauna Kea using fiber interferometry techniques. As a first step of this project, this group successfully linked the two W.M Keck-10m twin telescopes separated by 85m  in June 2005 (Keck PR here). This is an important step since  it “opens the way to sensitive optical imagers with resolutions below 1 milli-arc second” as stated by the authors in their Science paper, meaning that this method could provide a cheap way to attain an exquisite resolution by combining large aperture telescopes with an excellent sensitivity. The same team is currently trying to link two other Mauna Kea telescopes: the 3.6m-CFHT and the 8m-Gemini North Telescope.

After his Ph.D., Takayuki came back to the Observatoire de Paris at Meudon to work on the testbench of the FIRST instrument. He basically designed and built a primitive version of the prototype that we will test on the sky. He is  working at JAXA, the Japanese space agency, as a postdoctoral fellow where he helps designing instruments for the SPICA Telescope, the next-generation space infrared telescope developed by JAXA in partnership with ESA.

When in January 2010, the Lick Observatory confirmed that telescope time was granted to us to test FIRST on the sky, he did not hesitate one second and he took a flight ticket to attend the run. I must mention that as soon Takayuki arrived at Lick Observatory he did not  waste a second and start helping Elsa to align the prototype. The picture below shows the new set up of their “lab” where the prototype is aligned and almost ready to go on the telescope. We may have notice how they darken the room using paper foil and avoid parasite light at the entrance of the EMCCD camera with a poster tube. The yellow ropes are used as a support to protect the optics covering the entire bench with a black sheets. There is definitely a lot of creativity in this lab. :-)

The prototype is and ready to go on the telescope.

The prototype is aligned and ready to go on the telescope.

It is quite common for astronomers to juggle between several projects. Sometimes a project can remain inactive for years or we simply lose touch with it because of professional or personal reasons, then because we get funding and/or telescope time, there is a rush of activities forcing us to give up on other matters (like right now for me). We are very lucky to be able to decide our own priorities and set our schedule at work, this is a privilege that we have. A lot of us  do realize that.

More news soon with the mounting of FIRST on the telescope!

F.

Share/Save/Bookmark