CTA E0hĂĈ"1ōHÎĊ»¬ŊnÝðµP~(ěęĚĜ^ĝEHIKÖÀŽ!
ĚĚ}ĸFzHĞ·-EHÇµ¿EĸU¶ĸ&ãÛĸrXybĸWEøėĔÞ¹ÚČėĔ£ë8mĔĕEIKÖÀĖėĔQĆÃdėĔ&öôÙėĔª
Ä~ėĔąßĸĉÏ ėĔEøĸ3µē²Ĕĕà@E°ĖėĔĒãČ Ĕĕ E°ĖėĔ+YĀ_żùºE°ZŽĸVµĸT\Cż·-E°ZŽĸGż5EħĨġÀėĔĥĦĢĤŽĸĆµ¢2żĥĦĢĔ
īİĲĔĦĬĶĳĭĪĳĖĔĔĠĨğĘģĩıĩįĔĠİįĳİĲĴĭĵĮE0hĂĈĸLST (Large Size Telescope)E0hĂĈ!
•••••½h: 23 mĸĐÈ: 368 m2"¨§÷č : 28 m (f/D ~ 1.2)"ĈĐ : x«ĐĔ(<0.6nsec)"!%Ĉ!%Ĉ(¯ĐĈ)198"!%ĈĄØ<"198 "
Active Mirror Control system(HřŴŚŸűŸũè)"• F¯ŋłŉŒ20 sec Ō6Ł½ń"• Õąć: ~100ũŸ!

!%Ĉê"••••­,hƀ56.0 – 58.4 m"
ŢŮŧũŠŚţĔ: 16.6 mm (1/3 pixel)".O­: 85%(300-550nm]>)"10^ōRDŉōþ´"®¬}ľLST!%Ĉō9ōsupplier!

28 m"

23 m"

E0hĂĈō!%Ĉ
ĺÍåqĻŊō4Ċ»"éƀCold Slump""
Al Honeycomb"
Glass sheet 2.7mm

151 cm"Al Honeycomb of 60mm side"
Glass sheet 2.7mm
plate"SUS410"

Mold ( R=56m )

½ inch10 cm"

60 mm-t"
cut out"• (ĐÈ: 1.958m2!
• Õąć: ~47 kg!

AMCŝűŴ´"żiúŽ"ĈĐÍ`¥LžfƀÐ56mō§¦ĽŔō.OōtľŕŘ¥L (IKÖÀōaŌïØŽ"¥LńŇ¸ĽŔōtľŕ(D80)Ří"(D80: .Oō80%ōćľ7ŏŗŖ½h)".OŢŮŧũō
(linear scale)"

56m!

30mm"
30mm"

Spot images by 2f method!0.4m

!0.3m

!0.2m

+0.1m

+0.2m

+0.3m

+0.4m

!0.1m

57.14+mlog"

linear"!0.5m

+0.5m

relativecolorscale"PSF (D80) on R (-0.5 to +0.5m)
D80[mm]ênÝƀ"
R: 56.0 – 58.4 m"
D80(@2f): < 33.3mm"

D80: .Oō80%ō
ćľ7ŏŗŖ½h"

40.39
38.17

37.19
35.43
34.23

36.05
34.48
33.11
32.40 32.14
31.78+++

++­,h+(R)+[m]

±Añđ (Ĉ+ĈþwŴŧŞ)¤`B*ñđ"u)ñđ"¤`Ì;: -20ķ - 40ķ!
B*`: 20ķ/hr!
î25}ċĸ65 cycles !

&u&ü`: 0.59GŹrms
(ŜźŪźŜźŶM()!

&u{6ƀĔî60!ĔĔĔĔĔ!

ĈþwĸŠŚũōþ´ŘoLńŇ±Añđ"ñđiĸHnÝĸ¼nÝŊŒŌ\!

æĐ.O­• 5SŢūŧŤŵŸş

ďñđ (@à@EŽ"(Cr+Al+SiO2+HfO2+SiO2)"
reflectivity [%]

100
95
90
85
80

reflectivity at 370 nm"

75371+days:+!0.32%

70

Current+coa?ng

6560
250

300

350

400

450

500

550 600 650
wavelength [nm]]> (300-550 nm): ~91%"
peak (370 nm) : ~ 94 %"old+version 837+days+:+!1.98%+exposure+(day)

Active Mirror Control (AMC) system
OAlaser!

Actuator:!
••
•
•
•
•
•

actuator"ĈçĐ"

stepping motor"
ĉŃ: 36mm"
step: 5µm"
Eü`: 0.5mm/s"þ´Eõá: >700N"
Ď¡(þ´): 850mA"
Wireless#j"

CMOS cameraƀ!
•fixed"Imaging SourceÂé(DMK42AUC03)"

1 axis free"
2 axis free "CMOS Camera"••••

1280x960 pixels"
Gigabit Ethernet"
25 mm lens"
FOV: 10.8° x 8.1°"! 30.1arcsec/pix"(with a Hamburg group)"

AMCnÝñđ@IKÖÀ28mĽŔŢŞŵźŸō©OŃŗŇŷźšź§Ř¥L"•••

IR laser!
785nm, 3mW"
Beam Divergence": 0.6x0.3mrad(typ@1m)"¥LŃŗŇŷźšź§"laser"

mirror withCMOS camera"see"
fromscreen"

pic

755
120
750
100
745
80740
60735

§¦ØLÍ`"0.05pixel "(~1.5 arcsec)"

28.1m!

40730

10 pix = 42 mm = 0°.086" 20

725
530

535

540

545

550

555

560

565

570

screen here"

AMCnÝñđÔŴŸťŰŌĈō{6ŘţŴńŇi"AMC programŉèiōĸĈō6Ŀōţŷ([)Ř¥L"
residualscatter plots after 1st adjustment
hist_res_1

county [pixel]

circle: 0.582 pix =18 arcsec!
730.830(ênÝ)!
731

25

730.2

200

Mean

0.1072

RMS0.05454]>ƀ 0.11 pixel"

730.6
730.4

Entries

20730

15729.8
729.6

10729.4

5729.2

200:ñä"729
499 499.2499.4499.6499.8 500 500.2500.4500.6500.8 501
x [pixel]

00

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9
1
[pixel]   !

LSTñđýĔMPIĸMunichŌLSTō1/8¾făōý
(with MPP andŘcïĹ!%ĈſŘïØĹ"Interface plate:! a Brazilian group)"!%ĈŘýŘřŞŦŲśźŤź"Řńň×ŀŇőōplate"

8m!

AMC systemōRDñđĔ"interface plateōnÝðĸ"ĈōÜnñđĸÊŌ ´"ƀ10 kgĸ15 µmōŐ"ŭźŢŨšŚŸŎJ ń"®=ĸÒăōòÒg¬L"ŝűŴÉōHnÝñđ¨§ĐŝűŴō$ĐŘŝŪźŅŖ2.5mhľ/ŗŖUVûÿ?řŞŵŶľlê!ĔřŞŵŴŚũ®żâŷŚųŸŽŘv´"%%}©Oñđ@La Palma (MAGICŠŚũ, 2200mm a.s.l.)"ûÿ­"ŠŚũōÑDÖe`B*(UVA)""ƀ">90% (>350 nm)"î512 J/cm2(UVA)"©Oi2-3%'*"
100

94
92

80

90

Initial
14 Feb.
03 Mar.
07 Mar.
01 Apr.

60

Initial
14 Feb.
03 Mar.
07 Mar.
01 Apr.

88
86
84

40

ņōi (NË)"1%Æ`:k"

82
80

2078
76

0300

400

500

600

700300nm

500 J/cm2 ~ 3-4

400

500

600

700nm

 -10%/10  !

ŏŊő• E0hĂĈHÎĊ»ōEă!Ř}ľsf"• !%Ĉƀ2fŌœŖĈĐÍ`ñđŘM|Ĺ"– ĈĐÍ`ĸ.O­ĸ±AñđōnÝðŘM|ńĸ®=LST"1ŌïØŃŗŖ!%Ĉ(Ð200)²³Ĺ"• Active mirror control system (Ĉ{6#jŽ"– řŞŦŲśźŤźŊCMOS cameraŘ´ļňĸ18ÅìōÍ`ŉèĔ!MđNŌňêÍ`ōāpŘÁó"– MPIżůŲŸŬŸŽïØōñđýŘ´ļŇRDñđŘM| L"• interface plateōÓg¬ŨšŚŸ"• ŝűŴÉŌ´ŃŗŖřŞŵŶōÜnŘÁó"