Development of the Mechanical Structure of the Miris Soc

Moon, Byung-Kwon; Jeong, Wooju; Cha, Sang-Mok; Ree, Chang H.; Park, S.J.; Lee, D.H.; Yuk, In-Soo; Park, Y.S.; Park, J.H.; Nam, Uk-Won; Matsumoto, Toshio; Yoshida, Seiji; Yang, Sidong; Lee, S.H.; Rhee, Seung-Wu; Han, Wonyong

doi:10.5303/pkas.2009.24.1.053

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…Fig. 1 shows the SOC and the main goal of the SOC is near infrared imaging surveying in the equatorial areas of our galaxy and Cosmic Infrared Background (CIB) observation in North Ecliptic Pole (NEP) and South Ecliptic Pole (SEP) in the 0.9 ~ 2.0 um wavelength range [7,8]. The Winston cone baffle is the baffle design for the SOC.…”

Section: Introductionmentioning

confidence: 99%

Ultra Precision Machining of the Winston Cone Baffle for Space Observation Camera

Yang

Kim

Huh

et al. 2012

KEM

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The Winston cone baffle was developed for the space observation camera of the MIRIS (Multi-purpose Infrared Imaging System) which is the main payload of STSAT-3 (Science and Technology Satellite). The Winston cone baffle reduces the orbital heat load to the STSAT-3 and is thermally connected to the radiator to cool down. The jig and ultra precision machining jig was designed using a 3D modelling program and analyzed using a computer aided engineering program (ANSYS). The reasons for designing the jig for the baffle were to enhance the stability of the machining and improve the form accuracy of the baffle. The strength, weight and barycentre of the jig are investigated to find the optimized ultra precision machining conditions. To maintain the weight balance of the baffle at high speed rotation, there are lots of holes that can be inserted by heavier bolts. Vibration of the natural diamond bite tool is reduced by using thin copper pipe and urethane silicone. Using this bite tool, we could decrease patterns on the surface of the Winston cone baffle. The results of the simulation using ANSYS show that maximum deformation of the baffle is less than the tolerance limit. Surface roughness of the fabricated Winston cone baffle is machined with the jig and the machining tool is under 5 nm. The Winston cone baffle is plated with gold after being electroless plated with nickel. This baffle is applied to the flight model of the MIRIS.

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Section: Introductionmentioning

confidence: 99%

Ultra Precision Machining of the Winston Cone Baffle for Space Observation Camera

Yang

Kim

Huh

et al. 2012

KEM

View full text Add to dashboard Cite

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MIRIS: A Compact Wide-field Infrared Space Telescope

Han¹,

Lee²,

Jeong³

et al. 2014

Publications of the Astronomical Society of the Pacific

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A compact infrared space telescope called MIRIS (Multi-purpose Infra-Red Imaging System) was developed by the Korea Astronomy and Space Science Institute (KASI), and launched onboard the Science and Technology Satellite-3 of Korea (STSAT-3) in 2013 November. The main mission of MIRIS is the Paschen-α emission line survey along the Galactic plane and the cosmic infrared background (CIB) observation, particularly around the north ecliptic pole region. For these missions, a wide field of view (3:67 × 3:67°) with an angular resolution of 51.6″ and wavelength coverage from 0:9 ∼ 2:0 μm have been adopted for MIRIS, having optical components consisting of a 80 mm main lens and four other lenses with F/2 focal ratio optics. The opto-mechanical system was carefully designed to minimize any effects from shock during the launch process and thermal variation. Also, the telescope was designed to use a passive cooling technique to maintain the temperature around 200 K in order to reduce thermal noise. A micro Stirling cooler was used to cool down the Teledyne PICNIC infrared array to 90 K, which was equipped in a dewar with four filters for infrared passbands of I, H, and Paschen-α and a dual-band continuum line filter. MIRIS system was integrated into the STSAT-3 as its primary payload and successfully passed required tests in the laboratory, such as thermal-vacuum, vibration, and shock tests. MIRIS is now operating in sun synchronous orbits for initial tests and has observed its first images successfully.

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Development of the Mechanical Structure of the Miris Soc

Cited by 2 publications

References 18 publications

Ultra Precision Machining of the Winston Cone Baffle for Space Observation Camera

Ultra Precision Machining of the Winston Cone Baffle for Space Observation Camera

MIRIS: A Compact Wide-field Infrared Space Telescope

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