some comments about the giant chinese solar telescope concept
DESCRIPTION
SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT. JACQUES M. BECKERS Beijing August 6 – 8, 2011. OVERVIEW OF RECENTLY BUILD HIGHEST RESOLUTION SOLAR TELESCOPES. DUNN SOLAR TELESCOPE Sacramento Peak NM APERTURE76 cm VACUUM TELESCOPE (FIRST) ADAPTIVE OPTICS. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/1.jpg)
SOME COMMENTS ABOUT THE
GIANT CHINESE SOLAR TELESCOPE
CONCEPT
JACQUES M. BECKERS
Beijing
August 6 – 8, 2011
![Page 2: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/2.jpg)
OVERVIEW OF
RECENTLY BUILD
HIGHEST RESOLUTION
SOLAR TELESCOPES
![Page 3: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/3.jpg)
DUNN SOLAR TELESCOPESacramento Peak NMAPERTURE76 cmVACUUM TELESCOPE(FIRST) ADAPTIVE OPTICS
![Page 4: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/4.jpg)
SWEDISH SOLAR TELESCOPE
La Palma, Canary Islands
APERTURE 100 cm
VACUUM TELESCOPE
ADAPTIVE OPTICS
![Page 5: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/5.jpg)
DUTCH OPEN TELESCOPE (DOT)La Palma Canary IslandsAPERTURE 50 cmOPEN AIR TELESCOPE
![Page 6: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/6.jpg)
HINODEJAPANESE + TELESCOPE
APERTURE 50 cm
SPACE FACILITY => No Seeing All Wavelengths
![Page 7: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/7.jpg)
LARGEST AND BEST SOLAR TELESCOPE NOW:BIG BEAR NEW SOLAR TELESCOPE (NST)
NST PARAMETERS
Diameter 1.6 meterPrimary f-ratio f/2.4
λ Range.39 - 1.6
μmAO yesMCAO (DCAO) in future
NST IS PROTOTYPE FORADVANCED TECHNOLOGY
SOLAR TELESCOPE
![Page 8: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/8.jpg)
COMPARISON OF HINODE WITH BBSO NST OBSERVATIONS
DIAMETER = 0.5 DIAMETER = 1.6-m
![Page 9: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/9.jpg)
LARGEST AND BEST CHINESE SOLAR TELESCOPE NOW:
FUXIAN LAKE SOLAR TELESCOPE
FUXIAN SOLAR TELESCOPE
Diameter 1.0 meterPrimary f-ratio ~ f/.92λ Range 0.32 - 2 μmAO in future
![Page 10: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/10.jpg)
LARGE SOLAR TELESCOPES FOR THIS DECADEADVANCED TECHNOLOGY SOLAR TELESCOPE (ATST)
HALEAKALA, HAWAII
APERTURE 4-meter
ADAPTIVE OPTICS (later MCAO)
EUROPEAN SOLAR TELESCOPE (EST)
LA PALMA or TENERIFE
APERTURE 4-meter
MULTI CONJUGATE AO
![Page 11: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/11.jpg)
ADVANCEDTECHNOLOGYSOLARTELESCOPECompletion 2017
INSTRUMENTATION
![Page 12: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/12.jpg)
MAJOR PROGRESS INSOLAR OBSERVING CAPABILITIES
COINCIDES WITHENORMOUS IMPROVEMENTS IN
MAGNETO-HYDRODYNAMIC MODELING CAPABILITIES
THEORY OBSERVING SYNERGY
![Page 13: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/13.jpg)
http://www.hao.ucar.edu/Profiles%20In%20Science/Rempel1.php
MATTHIAS REMPELHigh Altitude Observatory
Boulder CO USA
RESOLUTION: 16 x 16 x 12 km = > 0.022 x 0.022 arcsec
TIME SPAN: 48 hours
![Page 14: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/14.jpg)
OBSERVATIONSwedish Solar Telescope
MHD MODELMatthias Rempel
INTENSITY IMAGES
![Page 15: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/15.jpg)
MAGNETIC FIELD OUTWARD FLOW
![Page 16: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/16.jpg)
INTENSITY VERTICAL MAGNETIC FIELD
BOB STEINMichigan State UniversityLansing, MI USA
RESOLUTION: 6 km = 0.008 arcsec
http://steinr.pa.msu.edu/~bob/data.html
![Page 17: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/17.jpg)
“RAW” (12.1-m) ATST (4-M) NST (1.6-m) SST (1-m) HINODE (0.5-m)
G-BAND(431 nm)
λ (μm) Nearby Line 0.86 0.854 CaII ▲(8-m) Δ(4-m)
1.29 1.083 HeI ▲ Δ 1.0746 FeXIII 1.72 1.548 FeI (g=3) ▲ Δ ~1.6 H- minimum 3.44 Bα (4.05) & Bβ (2.63) ▲ Δ
4.80 CO Bands ▲ Δ 6.90 opaque atmosphere ▲ Δ»
12.3 MgI (3700K) ▲»
![Page 18: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/18.jpg)
EFFECT OF MULTI-CONJUGATE ADAPTIVE OPTICS
ESO MCAO DEMONSTRATOR
* Requires Knowledge of Wavefront Distortion vs Height => Needs Atmospheric Tomography* Uses Multiple Deformable Mirrors Conjugated to Different Heights* Increases Field-Of-View by Factor 2N (diameter) or 4N2 (N=nr of DMs)* Included in Design of All Extremely Large Nighttime and Solar Telescopes
No MCAO With MCAO
![Page 19: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/19.jpg)
CaII 0.86 μmFeI 1.548 μmCO Bands 4.80 μmMgI 12.3 μm
.
CORRECTEDFIELD-OF-VIEW
FORSINGLE CONJUGATE AO
(SCAO)AND
TRIPLE CONJUGATE AO(TCAO)
NOTES: (1) FOV is not Dependent on Telescope Diameter(2) At 12.3 µm MgI has Full Disk image with 0.3” Resolution!
![Page 20: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/20.jpg)
ATMOSPHERIC TOMOGRAPHY
WITH
THE RING TELESCOPE
![Page 21: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/21.jpg)
BEAM CROSSECTIONHeight 12 kmλ = 1.56 µm
Corrected Area:
SCAO (20”)
TCAO(100”)
8-meterRING
TELESCOPE
![Page 22: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/22.jpg)
BEAM CROSSECTIONHeight 12 kmλ = 1.56 µm
Corrected Area:
SCAO (20”)
TCAO(100”)
8-meterFILLED
TELESCOPE
![Page 23: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/23.jpg)
RING TELESCOPES
REQUIRES MORE (~ 3 x)
“GUIDE STARS” (= sub-areas on Sun)
THAN FILLED-APERTURE
TELESCOPES
![Page 24: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/24.jpg)
CONCLUSIONS FOR 8-METER APERTURECHINESE GIANT SOLAR TELESCOPE DESIGN
1. Design Telescope for Near-Infrared & Infrared Wavelengths (0.8 μm – 13 μm)2. Note that in IR Sunspots are Less Dark and Hence Less Affected by Scattered Light 3. Allow for Future Extension to Visible Wavelengths in case MHD Models & ATST/EST Data Demand Better Resolution 4. Include Multi-Conjugate Adaptive Optics (MCAO => TCAO?)5. Prefer Filled Aperture to Allow for Atmospheric Tomography6. But Ring Aperture Ok but will Requires ~3x more “Guide Stars”7. Consider Low Scattered Light at IR Wavelengths (Coronagraph) to Allow Coronal Magnetic Field Observations at High Resolution8. Consider also Laser Guide Star SCAO or TCAO in Corona
![Page 25: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/25.jpg)
WHAT ABOUTLOCATION ??
I MONGOLIA!
![Page 26: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/26.jpg)
TOLBO NUURMONGOLIA50 km S of ÖLGII
2080 m ALTITUDE3 x 20 km SIZEFRESH WATER
![Page 27: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/27.jpg)
TOLBO NUUR2080 m HIGH
3 x 20 km
URUMQI
![Page 28: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/28.jpg)
![Page 29: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/29.jpg)
![Page 30: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/30.jpg)
Figure 7. Daily mean distribution per month of probable NAOH (number of astronomical observation hours) for three Mongolian sites and for two sites in Middle Asia. Circles: Khureltogot, +:Dalanzadgad, ×: Muren,squares: Khairabad, triangles: Sanglock.Figure reference:[1].
References[1] Batsukh G, Ganbaatar D, Khaltar D and Tugjisuren N 1995, A&ASS 113 341
NIGHTTIME! HOURS!
![Page 31: SOME COMMENTS ABOUT THE GIANT CHINESE SOLAR TELESCOPE CONCEPT](https://reader035.vdocuments.site/reader035/viewer/2022081604/568165f5550346895dd91b07/html5/thumbnails/31.jpg)
THE END