Deformable Mirror for Spaceflight

Metadata Updated: May 2, 2019

The specific objective of this IRAD is adapting a precision glass slumping technology that GSFC has developed for making grazing incidence mirrors for making normal incidence mirrors. These mirrors, extremely thin (0.2mm) and lightweight (0.5 kg/m2), will be sent to Dr. Keith Patterson at JPL and colleagues at Caltech who will attach precision actuation mechanisms on their backs to adjust their focus and other characteristics, making them fully diffraction-limited at 500nm wavelength. The requirements on the mirror substrate are: They must be no more than 0.2mm thick, because of both a desire to have a lightweight mirror and the fact that the actuation mechanism has a very limited dynamic range, which is inversely proportional to mirror substrate thickness. They must be diffraction-limited at all but the lowest spatial frequencies. In practice, this means that any deviation from the mathematic prescription must be well below 20 nm. This is because the actuation mechanism is not effective in removing errors with spatial periods shorter than about 20mm.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_40652
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 1e10bdd5-8bb9-40d2-8fd0-7203b617be95
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2016-09-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash d64b8587fc4b08efe9e1e077a2bc68b87144474e
Source Schema Version 1.1

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