subaru telescope, lgsao, & tmt › icrr_seminar › seminars11 › icrr...subaru telescope,...
TRANSCRIPT
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Subaru Telescope, LGSAO, & TMT
Masanori Iye(NAOJ)
1) Subaru Telescope2) Laser Guide Star Adaptive Optics3) 30m telescope TMT
1「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Subaru Telescope, its Science Achievements
2「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Enclosure Φ40m, H42m, 2500ton
400M$, 16yr for prep+construction, completion in19994
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5
Active mirror control experiment on
a 62cm mirror supported by 12 actuators
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Corning
ULE
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7
First mathematical
problem :
Find the best
configuration to
distribute 55 segments
with different CTE to
form a monolithic
mirror with minimum
thermal deformation
~ 55! combinations to
examine.
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9
Glass transportation to Pittsburgh
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Contraves
underground
optics facility
needed 30m
span
no wind shake
no diurnal tilt
no traffic
vibration
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11
Four years of patient polishing
「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Aug.199813nm rms figure error achieved
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13
First light sensitivity comparison
• (左)すばる60分 (右)ハッブル70分
すばる 60分, 28等級 勝負は引き分け ハッブル 70分 28等級
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14
Weak lensing by a cluster of galaxies
-
/
/
\
\
Miyazaki
Miyazaki in Iye et al.(2000)
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• Looking far is looking back in time
「Subaru, AO, TMT」、ICRR seminar、Masanori Iye(NAOJ) 15
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4m telescopes
8m telescopes
CCD
Most distant galaxies in history
IOK-1(Iye et
al 2006)
130
129
127
125
121
115
103
77
0
億年quasar
galaxy(radio)
galaxy(opt)
16
Re
dsh
ift
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17
NB filters for SuprimeCam
OH band emission
NB973New
CCD
Old CCD
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Only one among
41,533 objects
Exposure 15 hrs
18
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The most distant galaxy at 12.88Glyr IOK-1
Filter
IOK-1 after Iye, Ota, &
Kashikawaz=6.964
12.88Gyr ago
Hydrogen Lyman α emission
19
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High-z galaxy list 10/21で1498日目
Tens of LAE at z=6.6 but only one
LAE at z= 7.0.
21
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職員みんなの天文学レクチャー「ボケに利く天文学」 、 家正則、 2010.5.19
Lehnert et al.(2010) z=8.55? Iye et al.(2006) z=6.96
UDFy-38135539 IOK-1
Low S/N data
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職員みんなの天文学レクチャー「ボケに利く天文学」 、 家正則、 2010.5.19 24
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High redshift galaxies
25
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Many brilliant Japanese Supernovae
burst in Early Universe Studies
• N.Kashikawa
• M.Ouchi
• K.Shimasaku
• K.Ota
• N.Yoshida
• K.Omukai
• A.Inoue
• M.Kobayashi
27
Japan Strategy
Subaru SuprimeCam
V
HyperSuprimeCam
V
TMT
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視野比べ
HST WFC3
SuprimeCamHyperSuprimeCam
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Cosmic Reionization History
再電離完了
Neutral hydrogen
absorbs Lyman α
photons making the
detection of LAEs
difficult
Twilight
End of dawn
「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)Redshift
Ne
utr
al
hyd
rog
en
fra
cti
on
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Big Bang
Recombination
(0.38My, z=1000)
最初の原始銀河(2億年後?)
Cosmic Dawn
(0.8Gy,z~7)
Hot Cool Warm
Dark Age
Reionzed by stars
Subaru studiesCMB
Loeb 2006
Present(13.7Gy,z=0)
Galaxy evolution
Metal free stars
Origin of life
Primordial galaxies
(2Gy, z~20?)
Looking at Cosmic Dawn
First Stars
「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Laser guide star
Adaptive Optics
32「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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33
12.9 Gyr
=40,0000,0000,0000, 0000sec
Last 0.001sec
光子(photon)
The last milli second of photon’s long journey
blurs its beauty
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Wavefront sensor
Deformable mirror
Real time control
Adaptive Optics
34
Guide star
Target object
Distorted
wavefront
Electronics
Corrected
wavefrontScience
Camera
Wavefront
Sensor
IROpt
Deformable
Mirror
Telescope
Turbulence
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First light of AO188(2006/10/9)
AO off (0.6arcsec) 2.2μm AO on (0.063arcsec)
AO188 improved the PSF of 400M$ Subaru
Telescope at an additional 7M$ investment.
36「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Orion Trapezium
1”
AO188
With AO188 (2006)
Without AO (1999)
37
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38
Wavefront sensors
Shack-Hartmann
wavefront sensor:
1st order derivative
Curvature
wavefront sensor:
2nd order derivative
Spot
displace-
ment vector
distribution
carries tilt
signal
Illuminotion
distribution
carries
curvature
signal
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39
Wavefront sensor
wavefront sensing at 188 subapertures
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40
Functioning Principles of Deformable mirrors
Stacked piezo rods:
Used with Shack-
Hartmann sensor for
high order correction
Bi-morph piezo
sheet :
Used with curvature
sensor for
medium/low order
correction
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Deformable mirror with 188 electrodes.
Diameter : 90 mm
Speed :200Hz
Price : 200k$ (CILAS)
188 Electrode distribution
Designed by NAOJ
Deformation of DM
41
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42
Image improvement in the AO188 fisrt light (2006)
AO on
AO offBand : 2.2miron
Seeing : 0.4 arcsec
Corrected Image :
0.07 arcsec
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Generate an
artificial guide star
by illuminating the
sodium layer at
90km height using
a special 6W laser
shining at 589nm.
Laser guide AO system
43
Artificial starSodium
Layer
Sodium
Laser
Laser
Launching
Telescope Fiber Optics
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44
Non linear optics crystal
Sum frequency sodium laser
RIKEN/NAOJ
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46
Laser guide star shining at 90km height
Fine tuning the frequency to sodium D2 line at 0.1ppm level
LGS Generation Verification Experiment(Oct 2005)
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No star wars.
T.Fuse 2009
47「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Orbits of stars around SMBH in GC
Orbital motion of
stars around Sgr A*
indicates a BH of
about million times
the mass of the
Sun
48「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Flickering of infalling gas onto BH in the GC
Subaru AO36
2008 May 28
Nishiyama et al.
(2009)
49「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Exoplanet candidates GJ758B,C
50
• Jupitor like planet
around a sun like star
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Other applications of AO
• Remote sensing
• Retinal imaging
• Laser surgery
• Laser Communication
• Laser cutter
• Laser nuclear fusion
• Guiding lightening
• Purification of Uranium
w/o AO w AO
Center for Vision Science
Vision cells
51「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Thirty Meter Telescope
52「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
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Thirty Meter Telescope
First stars and cosmic dawn
2nd Earth, Life in other planets
Dark energy, Cosmology constants
1.5m segments x 492
Construction 1.3B$
FL 2019 End?
NAOJ, Caltech, Univ.California
ACURA, AURA, NAOC, India
53
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16 m
GROUND
LEVEL
23 m
EL
AXIS
46.59
m
M2
VERTEX
50.56
m
17.5
R
27.6
R
1.8 m
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ATCセミナー
IRIS
MOBIE
IRMS
Instrument layout
First light instruments
Other instruments
2009/12/2555
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Okayama 1.88m 8.2m Subaru 30m TMT
R<24 (1987)
z<2 R<28 (2000)
z<7 R<33? (2019?)
Z< 17?
Light collecting
power =x13
Spatial resol’n =x3.6
Efficiency =x180
Evolution of telescopes Masanori Iye(NAOJ)
56
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R~33 A firefly on the dark side of the
Moon.(~10mW), 1 hour exposure on TMT with
LGSAO
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New frontier for TMT
Frontier for Subaru
Cosmic re-ionization
at 0.8Gyr (Subaru)
Cosmic
recombination
at 0.38Myr (WMAP)
Big bang
Dark Age:
First starsAcceleration of cosmic expansion
Evolution of galaxies,
stars, planets, and life
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Direct measurement of cosmic expansion history
to quantify the dark energy property
60
Redshift
measurement
Redshift
measurement
10yrs later
10Gyr 5Gyr 1Gyr
Needs precision at 1cm/sec
50cm/sec precision is becoming
feasible for stellar Doppler
measurement is
「Subaru, AO, TMT」、 110608、 ICRR seminar、 Masanori Iye(NAOJ)
Acceleration?
DecelarationRedshift
increases by
1/1.3billion in
10 years.
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Planets in habitable zone
Search for biomarkers in the atmosphere
62「Subaru, AO, TMT」、ICRR
seminar、Masanori Iye(NAOJ)
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Composition analysis of atmosphere
63
Biomarkers: oxygen
molecules etc.?
Other Sun
Other Sun’s
spectrum
Planet
atmospheric
absorption
lines
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250M$
Gordon Moore (Intel)
NAOJ donation site
from 10$
64Subaru, LGSAO, TMT, 110608, ICRR seminar、Masanori Iye(NAOJ)
All we need is money …, but
East Japan Earthquake & Disaster …