![]() ![]() This work provides an overview of the design considerations and engineering of the Deformable Mirror Demonstration Mission optical payload. The 6U CubeSat was launched on Februand deployed from the International Space Station on July 13, 2020. This work describes the instrument design drivers and CubeSat implementation, and briefly illustrates operation on orbit by comparing ground-based measurements of a displaced actuator to an on-orbit measurement using the internal laser source. In the DeMi payload, a Shack Hartmann lenslet array based wavefront sensor monitors the deformable mirror, illuminated by either an internal 636 nm laser diode or external starlight. Hence, they have the potential of improving contrast in coronagraphs on future space telescopes. Such mirrors can provide precise wavefront control with low size, weight, and power per actuator. The Deformable Mirror Demonstration Mission (DeMi) is a technology demonstration CubeSat to test a 140 actuator micro-electromechanical system (MEMS) deformable mirror in low-Earth orbit. 5Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States.4Aurora Flight Sciences, Cambridge, MA, United States.3Department of Physics, California Institute of Technology, Pasadena, CA, United States.2Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA, United States.1Department of Astronomy/Steward Observatory, University of Arizona, Tucson, AZ, United States.Holden 2 Jennifer Gubner 2 Christian Haughwout 2 Paula do Vale Pereira 2 Yinzi Xin 2,3 John Merk 4 Kerri L. Douglas 1,2* Greg Allan 2 Rachel Morgan 2 Bobby G. Overview of the Spatial Frequency Surface Specifications for Proposed UVOIR Primary Mirrors That Will Meet the Science Requirements of the Next Generation of Space Optics aEwan S. Overview of the Spatial Frequency Surface Specifications for Proposed X-Ray Primary Mirrors That Will Meet the Science Requirements of the Next Generation of Space Optics a ∼ 10 − 17 erg cm − 2 s − 1 (0.5–2 keV, observed frame)īlack holes distribution cluster spectroscopyĭynamics of cluster gas redshift of Fe line absorption line featuresĥ × 10 − 4 rejection in 0.5–1.5 deg annular regionĪ Each parameter is chosen by the specific science goals of the instrument system. SPO, silicon pore optics SGO, slumped glass optics CTE, coefficient of thermal expansion ELZM, extreme light-weighted ZERODUR mirrors CNC, computer numerically controlled AWJ, abrasive water jet CVD, chemical vapor deposition CFRP, carbon fiber reinforced plastics. Blank entries were not reported in the literature. PSF, point spread function RMS, root-mean-square SLS, space launch system UVOIR, ultraviolet/optical/infrared WFE, wavefront error.Ī Note that spin-cast mirrors have been used not in space telescopes but for ground-based observatories. Zodiacal dust emission limited between 0.4 and 1.8 μmĪ Each parameter is chosen by the specific science goals of the instrument system. Note: Author names will be searched in the keywords field, also, but that may find papers where the person is mentioned, rather than papers they authored.Use a comma to separate multiple people: J Smith, RL Jones, Macarthur.Use these formats for best results: Smith or J Smith.For best results, use the separate Authors field to search for author names.Use quotation marks " " around specific phrases where you want the entire phrase only.Question mark (?) - Example: "gr?y" retrieves documents containing "grey" or "gray".Asterisk ( * ) - Example: "elect*" retrieves documents containing "electron," "electronic," and "electricity".Improve efficiency in your search by using wildcards.Example: (photons AND downconversion) - pump.Example: (diode OR solid-state) AND laser. ![]() Note the Boolean sign must be in upper-case. Separate search groups with parentheses and Booleans. ![]()
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