Kwasan and Hida Observatories, Graduate School of Schience, Kyoto University japanese Home page

The Solar Magnetic Activity Research Telescope
(SMART)

About SMART

The recent development of human space activity requires accurate space weather forecasting through the study of solar explosive phenomena and their origins. Such phenomena can endanger life due to the effects of high energy particles and radiation. The Solar Magnetic Activity Research Telescope (SMART) which was built in 2003, is a state-of-the-art instrument that combines high resolution H alpha full disk observations and vector magnetic field measurements. This allows us to investigate the development of magnetic activity and the mechanisms responsible for energy storage and release in the solar atmosphere.

Snap shot of the SMART

The four telescopes of the SMART

SMART consists of four different telescopes with apertures of 20 or 25 cm. They are placed on a tower with a height of 16m.

T1: For H-alpha full disk observations
This telescope acquires solar H alpha full disk images at high spatial and temporal resolution thus enabling us to monitor any explosive events that take place at any position on the sun.
[SMART H-alpha data archive ]
T2: For vector magnetic field measurements
Information about the three dimensional photospheric (vector) magnetic field can be obtained with this telescope. Vector magnetic field measurements are essential for understanding solar explosive events.
[Sample images of the magnetograph]
T3: For H-alpha/continuum high speed observations
Partial images with high spatial and temporal resolutions are useful to study the dynamic evolution of structures and the energy release mechanism of solar flares.
[Quick look (calendar)]
T4: Multipurpose telescope
This telescope is designed for obtaining partial H alpha images and measurements of the vector magnetic field. In magnetogram mode it can acquire partial frame images of the photospheric magnetic field with higher spatial resolution and quality than those of T2.

Example observation
Solar full disk image on 30th Oct, 2003 (by T1)


H-alpha Data Archives
You can see and download H-alpha full solar-disk images that were observed after July 2005 with T1 and partial region images that were obtained from June 2007 to August 2008 with T3.

[Go to the SMART H-alpha Data Archives Page]





Papers using SMART data
"Features of Solar Telescopes at the Hida Observatory and the Possibilities of Coordinated Observations with SolarB"
UeNo, S. et al.
ASP Conference Series, 325, 319, 2004
"Triggering Mechanism for the Filament Eruption on 2005 September 13 in NOAA Active Region 10808"
Nagashima, K. et al.
The Astrophysical Journal, 668, 533-545, 2007
"Three Successive and Interacting Shock Waves Generated by a Solar Flare"
Narukage, N. et al.
The Astrophysical Journal, 684, L45-L49, 2008
"Evolution of Anemone AR NOAA 10798 and the Related Geo-Effective Flares and CMEs"
Asai, A. et al.
Journal of Geophysical Research, 114, A12, A00A21, 2009
"First Simultaneous Observation of an H-alpha Moreton Wave, EUV Wave, and Filament/Prominence Oscillations"
Asai, A. et al.
The Astrophysical Journal, 745, L18, 2012
"High-Speed Imaging System for Solar-Flare Research at Hida Observatory"
Ishii, T.T. et al.
Publ. Astron. Soc. Japan 65, 39, 2013


The performance

T1: For H-alpha full disk observation

Objective lens Effective apature200 mm
Working apature200 mm
Number of lens3
Imaging Field of view(FOV)2300 arcsec
Reliable FOV for wavelength-shift (diameter)2000 arcsec
Effective FOV2300 arcsec
Central wavelength6562.81
Filter TypeLyot
Apature40.0 mm
Total length of the elements191.8 mm
FWHM 0.25 A
CCDSize36 mm
Pixel Number4000 x 4000
Max. Time Resolution 4 sec
Optics Total focal length3228.63
Total F ratio16.14
Path of light (click!)20cmH alpha path of light

T2: For vector magnetic field measurement

Full diskPartial frame
Objective lens Effective apature200 mm200 mm
Working apature100 mm200 mm
Number of lens33
Imaging FOV2000 arcsec500 arcsec
Reliable FOV for wavelength-shift (diameter)1951 arcsec707.11 arcsec
Effective FOV2000 arcsec707.11 arcsec
Central wavelength6302.50 A6302.50 A
Filter TypeLyot
Apature30.0 mm
Total length of the elements272.1 mm
FWHM 0.125 A
CCD Size28 mm28 mm
Pixel Number2000 x 20002000 x 2000
Max. Time Resolution
Optics Total focal length2886.91 mm11547.60 mm
Total F ratio28.8757.74
Path of light20cm path of light(full disk)20cm path of light(partial frame)

T3: For H-alpha/continuum high speed observations

previous version
Objective lens Effective apature250 mm
Working apature250 mm
Number of lens3
Filter H-alphaAndover 656.3nm (3A)
ContinuumAndover 647nm (10A)
CCD size7.4 um
Pixel Number1600 x 1200 (pixel)^2
Field of View344 x 258 (arcsec)^2
Max. Time Resolution0.03 sec (30frames/sec)
Optics Total focal length7425.6 mm
Total F ratio29.70
Path of light (click!)T3 path of light
3D CAD (click!)T3 3D CAD

T4: Multipurpose telescope (Polarization measurement)

previous version
Objective lens Effecitve apature250 mm
Working apature250 mm
Number of lens4
Filters TypeFabry-Perrot (Tandem)
Apature60.0 mm
Wavelength630.25 nm
FWHM 0.16 A
CCD size7.4 um
Pixel Number1600 x 1200 (pixel)^2
Field of View450 x 340 (arcsec)^2
Max. Time Resolution0.03 sec (30frames/sec)
Optics Total focal length24751.8 mm
Total F ratio99.01
Path of light (click!)T4 path of light
3D CAD (click!)T4 3D CAD