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Area of Science:

Optical engineering
Space telescope instrumentation

Background:

Hubble Space Telescope primary mirror exhibited spherical aberration.
Correction required specialized anamorphic aspheric mirrors for scientific instruments.

Purpose of the Study:

To develop a quick and simple method for verifying the surface figure of aspheric mirrors.
To ensure the accuracy of corrective optics for the Hubble Space Telescope.

Main Methods:

Fabrication of five anamorphic aspheric mirrors for the Corrective-Optics Space Telescope Axial-Replacement (COSTAR) instrument.
Development and application of a simple verification technique during vendor acceptance tests.

Main Results:

The developed technique was successfully applied to three aspheric mirrors.
Results confirmed that the tested aspheres meet the expected accuracy requirements for this verification method.

Conclusions:

A practical and efficient method for aspheric mirror surface figure verification has been established.
This method aids in ensuring the quality of corrective optics for space-based observatories.