Obscura telescope with a MEMS micromirror array for space observation of transient luminous phenomena or fast-moving objects

Park, J. H.; Garipov, G.; Jeon, Jin-A; Khrenov, B. A.; Kim, J. E.; Kim, M.; Kim, Y. K.; Lee, C. H.; Lee, J.; Na, G. W.; Nam, S. W.; Park, I. H.; Park, Y. S.

doi:10.1364/oe.16.020249

Cited by 27 publications

(14 citation statements)

References 14 publications

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“…Microelectromechanical systems (MEMS) are becoming increasingly important for military, 1 aerospace, 2 and biomedical applications. 3 In many of these applications, nuclear microbatteries could be used to provide small amounts of power over long periods of time, and for this reason they have received considerable research attention.…”

Section: Introduction a Nuclear Microbatteriesmentioning

confidence: 99%

Gallium arsenide 55Fe X-ray-photovoltaic battery

Butera

Lioliou

Barnett

2016

Journal of Applied Physics

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The effects of temperature on the key parameters of a prototype GaAs 55Fe radioisotope X-ray microbattery were studied over the temperature range of −20 °C to 70 °C. A p-i-n GaAs structure was used to collect the photons from a 254 Bq 55Fe radioisotope X-ray source. Experimental results showed that the open circuit voltage and the short circuit current decreased with increased temperature. The maximum output power and the conversion efficiency of the device decreased at higher temperatures. For the reported microbattery, the highest maximum output power (1 pW, corresponding to 0.4 μW/Ci) was observed at −20 °C. A conversion efficiency of 9% was measured at −20 °C.

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Section: Introduction a Nuclear Microbatteriesmentioning

confidence: 99%

Gallium arsenide 55Fe X-ray-photovoltaic battery

Butera

Lioliou

Barnett

2016

Journal of Applied Physics

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“…Functionally, it is a large-scale version of the tracking mirror telescope for wide FOV coverage of sky with milliseconds-slewing capability on trigger with coarse location (Park 2004;Park et al 2008;Lee et al 2012). Apertures of the telescopes are co-aligned providing multi-wavelengths measurement of GRBs in X-ray and UV/optical ranges.…”

Section: Instrument Configurationmentioning

confidence: 99%

UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts

et al. 2017

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The payload of the UFFO (Ultra-Fast Flash Observatory)-pathfinder now onboard the Lomonosov spacecraft (hereafter UFFO/Lomonosov) is a dedicated instrument for the observation of GRBs. Its primary aim is to capture the rise phase of the optical light curve, one of the least known aspects of GRBs. Fast response measurements of the optical emission of GRB will be made by a Slewing Mirror Telescope (SMT), a key instrument of the payload, which will open a new frontier in transient studies by probing the early optical rise of GRBs with a response time in seconds for the first time. The SMT employs a rapidly slewingThe Lomonosov Mission Edited

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“…A series of small prototype MMA system have been developed in our group since 2004 [26]. We fabricated a small prototype of 3 mm caliber telescope to demonstrate the idea of fast slewing or tracking [27]. It was flown once in space on the ISS in 2008, and once on Tatiana-2 satellite in 2009, with excellent performance, both for nadir observation of transient luminous events occurring in the upper atmosphere [28].…”

Section: Slewing Mirror Telescopementioning

confidence: 99%

“…BATSE/CGRO [27], BeppoSAX [28], HETE-2 [29], Integral [30], and Swift [31]) to determine positions of GRBs. With the time constraint to meet the launch schedule as well as mass and power constraints for UBAT (only approximately 10 kg and 10 W), we adopted a well-established coded-mask technique similar to Swift BAT but scaled down for the localization of bright, transient X-ray sources.…”

Section: Uffo-pathfindermentioning

confidence: 99%

Ultra-Fast Flash Observatory: Fast Response Space Missions for Early Time Phase of Gamma Ray Bursts

Park

Ahmad

Barrillon

et al. 2013

EAS Publications Series

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Abstract. One of the unexplored domains in the study of gamma-ray bursts (GRBs) is the early time phase of the optical light curve. We have proposed Ultra-Fast Flash Observatory (UFFO) to address this question through extraordinary opportunities presented by a series of small space missions. The UFFO is equipped with a fast-response Slewing Mirror Telescope that uses a rapidly moving mirror or mirror array to redirect the optical beam rather than slewing the entire spacecraft or telescope to aim the optical instrument at the GRB position. The UFFO will probe the early optical rise of GRBs with sub-second response, for the first time, opening a completely new frontier in GRB and transient studies. Its fast response measurements of the optical emission of dozens of GRB each year will provide unique probes of the burst mechanism and test the prospect of GRB as a new standard candle, potentially opening up the z > 10 universe. We describe the current limit in early photon measurements, the aspects of early photon physics, our soon-to-be-launched UFFO-pathfinder mission, and our next planned mission, the UFFO-100.

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Obscura telescope with a MEMS micromirror array for space observation of transient luminous phenomena or fast-moving objects

Cited by 27 publications

References 14 publications

Gallium arsenide 55Fe X-ray-photovoltaic battery

Gallium arsenide 55Fe X-ray-photovoltaic battery

UFFO/Lomonosov: The Payload for the Observation of Early Photons from Gamma Ray Bursts

Ultra-Fast Flash Observatory: Fast Response Space Missions for Early Time Phase of Gamma Ray Bursts

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