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Related Experiment Video

Updated: Jun 9, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Reflective correctors for the Hubble Space Telescope axial instruments.

|September 8, 2010

Summary

New reflective correctors fixed the Hubble Space Telescope's spherical aberration. These optical elements restored camera resolution and spectrograph capabilities for improved astronomical observations.

Area of Science:

Astronomy and Astrophysics
Optical Engineering
Space Science

Background:

The Hubble Space Telescope (HST) suffered from spherical aberration, significantly degrading its optical performance.
This aberration limited the clarity and resolution of scientific instruments, impacting observational data quality.

Purpose of the Study:

To design and implement optical correctors to compensate for the HST's spherical aberration.
To restore and enhance the performance of key scientific instruments, including cameras and spectrographs.

Main Methods:

Development and deployment of five reflective correctors, each comprising a field mirror and an aspherical reimaging mirror.
Integration of these correctors into a new module replacing an existing axial instrument during a refurbishment mission.

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Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Published on: April 22, 2013

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Last Updated: Jun 9, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities

Published on: April 22, 2013

Main Results:

Restoration of angular resolution capability in the HST's camera, albeit within reduced fields of view.
Regained potential for observations in crowded fields and effective light collection at spectrograph slits.

Conclusions:

The successful implementation of reflective correctors effectively corrected spherical aberration in the HST.
Instrument performance was significantly improved, enabling higher quality astronomical data acquisition.