Title image design: Yoichi Tamura
“Large Aperture
Millimeter/Submillimeter Telescopes
in the ALMA Era”
The goals of the meeting
Kotaro KOHNO
University of Tokyo
Sakai: Historical area with many heritages
47 large and small tumuli, including 3 major tumuli of Nintoku, Richu, and Hanzei
Comfort Hotel Sakai
Osaka Bay
We are here:
Osaka Pref. Univ.
Nakamozu Campus
Keyhole shape in Sakai:
Nintoku Mausoleum
Nintoku Mausoleum (Daisen-Kofun) is
Japan's largest kofun (ancient tomb)
located in Sakai, Osaka. It is considered
to be the tomb of Emperor Nintoku, the
16th emperor of Japan, and to have
been constructed in about the 5th
century. Nintoku Mausoleum is a
keyhole-shaped kofun called zempokoen-fun (front-square and rear-round
kofun), unique to ancient Japan. The
486 m (1594.5 ft) long and 35.8 m
(117.5 ft) tall kofun is one of the three
great tombs in the world, together with
the Pyramid of Khufu in Egypt, which is
230 m (754.6 ft) long and 146 m (479 ft)
tall, and the Mausoleum of the First
Qin Emperor in China, which is 350 m
(1148.3 ft) long and 76 m (249.3 ft) tall.
http://www.facebook.com/notes/osaka-japan/nintoku-mausoleum-daisen-kofun%E4%BB%81%E5%BE%B3%E5%A4%A9%E7%9A%87%E9%99%B5%E5%A4%A7%E4%BB%99%E5%8F%A4%E5%A2%B3/161972410545269?ref=nf
Keyhole shape in the sakai sky
http://en.wikipedia.org/wiki/File:NGC_3372d.jpg
Another aspect of Sakai:
“a town of craftsmanship”
The gun production center of Japan
During the Warring
state period (late 15th
to 16th century),
Sakai was the gun
production center of
Japan, with the spirit
of a craftsman.
A picture of gunsmith workshop in Sakai
(A collection of National Diet Library)
Now Sakai is a heterodyne receiver
production center of Japan!
Osaka Pref. University
Is one of the major
providers of heterodyne
receivers to telescopes,
Including NRO 45m and
ASTE 10 m telescopes.
It is also deeply involved
with ALMA receivers
including band 4 and band
10.
Picture: Osaka Pref. Univ. 2m telescope
In Nobeyama
Future large mm/submm telescope
project in Japan
• D=30-50m, key frequency: 70 – 400 GHz
• Two key technologies:
– wide area imaging with a wide field of view
– multi-object, wide-band spectrograph
• Natural extension from NRO 45m/ASTE 10m
telescopes
• Several options
– Built our own by Japan? Participating to CCAT? LMT?
• Preliminary discussion in the astronomy &
astrophysics section committee, under the Science
Council of Japan, has been started, as well as
bottom-up discussion in the community
The goals of this workshop
• Exploring the astrophysical potential of next
generation large single-dish telescopes in the ALMA
era with ultra-wide field of view and bandwidth at
millimeter and submillimeter wavelengths.
• Exchanging current status of future and existing
mm/submm telescopes, including CCAT, LMT, NRO
45m, IRAM 30m, ASTE, APEX, NANTEN2, etc.
• Sharing updated information on astrophysical
activities and technology developments.
• Discussion on the future (mid-term and long-term)
collaboration among projects.
Announcement from LOC
• LOC member will have a red name tag. Please catch
any if you need any assistance.
• Lab. Tour is planned.
• Please register; especially for banquet tonight!
• This meeting room is until tomorrow’s noon; we will
move the room then. Poster presentations will also be
removed then.
• We will collect your presentation files. Please remove
the slides you do not want to be public.
Enjoy!