SPICA mission for mid- and far-infrared astronomy

Nakagawa, Takao

doi:10.1117/12.789923

Cited by 17 publications

(7 citation statements)

References 17 publications

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“…These attributes are particularly desirable in the energy-starved far-infrared spectral region. Building on the space heritage of SPIRE instrument, Safari will provide high-speed mapping spectroscopy, a photometric imaging mode and the flexibility to tailor the spectral resolution to a specific science program [4].…”

Section: Introduction-spica/safarimentioning

confidence: 99%

A software simulator for the SPICA Safari instrument

Naylor¹,

Hayton²,

Lindner³

et al. 2011

Meas. Sci. Technol.

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A software simulator that has been developed for the Safari instrument proposed for the SPace Infrared telescope for Cosmology and Astrophysics (SPICA) mission is presented. The simulator can ingest a range of realistic input spectra and, following a thorough radiative transfer analysis, calculates the power reaching the detector as a function of the optical path difference within the interferometer. The simulator is modular in design so that it can be easily modified to ingest test data as they become available. The simulator will not only find use during the design phase of the Safari instrument, but also during ground performance verification campaigns of the flight model. Through validation of the simulator on ground test data, it will be possible to predict accurately the in-orbit performance of the Safari instrument.

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Section: Introduction-spica/safarimentioning

confidence: 99%

A software simulator for the SPICA Safari instrument

Naylor¹,

Hayton²,

Lindner³

et al. 2011

Meas. Sci. Technol.

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“…Over the years many advances have been made in the (far) infrared, with a succession of space missions -IRAS, ISO, Spitzer, AKARI, and Herschel ( [7][8] [9][10] [11]) -but all were hampered by either having a warm(ish) or a small(ish) size telescope thus limiting the practically achievable sensitivity. The next step in far-infrared research can be made only with a mission with a large cold telescope, like the SPace Infrared telescope for Cosmology and Astrophysics (SPICA, Figure 1, [12], [13] [14]) proposed by the Japanese space agency JAXA. This satellite is designed around a telescope which is both large (3 meter) and cold (6K) thus providing a uniquely low background emissivity environment.…”

mentioning

confidence: 99%

SAFARI new and improved: extending the capabilities of SPICA's imaging spectrometer

et al. 2014

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The Japanese SPace Infrared telescope for Cosmology and Astrophysics, SPICA, aims to provide astronomers with a truly new window on the universe. With a large -3 meter class-cold -6K-telescope, the mission provides a unique low background environment optimally suited for highly sensitive instruments limited only by the cosmic background itself. SAFARI, the SpicA FAR infrared Instrument SAFARI, is a Fourier Transform imaging spectrometer designed to fully exploit this extremely low far infrared background environment.The SAFARI consortium, comprised of European and Canadian institutes, has established an instrument reference design based on a Mach-Zehnder interferometer stage with outputs directed to three extremely sensitive Transition Edge Sensor arrays covering the 35 to 210 μm domain. The baseline instrument provides R > 1000 spectroscopic imaging capabilities over a 2' by 2' field of view. A number of modifications to the instrument to extend its capabilities are under investigation. With the reference design SAFARI's sensitivity for many objects is limited not only by the detector NEP but also by the level of broad band background radiation -the zodiacal light for the shorter wavelengths and satellite baffle structures for the longer wavelengths. Options to reduce this background are dedicated masks or dispersive elements which can be inserted in the optics as required. The resulting increase in sensitivity can directly enhance the prime science goals of SAFARI; with the expected enhanced sensitivity astronomers would be in a better position to study thousands of galaxies out to redshift 3 and even many hundreds out to redshifts of 5 or 6. Possibilities to increase the wavelength resolution, at least for the shorter wavelength bands, are investigated as this would significantly enhance SAFARI's capabilities to study star and planet formation in our own galaxy.

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“…Herschel은 L2 지점에서 Passive Cooling을 통해 망원경을 먼저 냉각한 후 액체 헬륨을 ISO보다 거의 2배 적은 소모율로 관측기기를 냉각하며 관측을 수행한다 (Pilbratt 2008). 그리고 JWST 와 SPICA는 L2 지점에서 액체 헬륨없이 모두 기계식 냉동기에 의해 Focal-plane 기기를 냉각하며 운영할 예 정이다 (Gardner et al 2006, Clampin 2008, Nakagawa 2008…”

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Development of the Mechanical Structure of the Miris Soc

Moon

Jeong²,

Cha³

et al. 2009

Publications of The Korean Astronomical Society

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MIRIS is the main payload of the STSAT-3 (Science and Technology Satellite 3) and the first infrared space telescope for astronomical observation in Korea. MIRIS space observation camera (SOC) covers the observation wavelength from 0.9㎛ to 2.0㎛ with a wide field of view 3.67˚☓3.67˚. The PICNIC HgCdTe detector in a cold box is cooled down below 100K by a micro Stirling cooler of which cooling capacity is 220mW at 77K. MIRIS SOC adopts passive cooling technique to chill the telescope below 200 K by pointing to the deep space (3K). The cooling mechanism employs a radiator, a Winston cone baffle, a thermal shield, MLI (Multi Layer Insulation) of 30 layers, and GFRP (Glass Fiber Reinforced Plastic) pipe support in the system. Optomechanical analysis was made in order to estimate and compensate possible stresses from the thermal contraction of mounting parts at cryogenic temperatures. Finite Element Analysis (FEA) of mechanical structure was also conducted to ensure safety and stability in launching environments and in orbit. MIRIS SOC will mainly perform Galactic plane survey with narrow band filters (Pa  and Pa  continuum) and CIB (Cosmic Infrared Background) observation with wide band filters (I and H) driven by a cryogenic stepping motor.

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SPICA mission for mid- and far-infrared astronomy

Cited by 17 publications

References 17 publications

A software simulator for the SPICA Safari instrument

A software simulator for the SPICA Safari instrument

SAFARI new and improved: extending the capabilities of SPICA's imaging spectrometer

Development of the Mechanical Structure of the Miris Soc

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