The ShortTube 80 Telescope by Neil T. English

The ShortTube 80 Telescope by Neil T. English

Author:Neil T. English
Language: eng
Format: epub
ISBN: 9783030235574
Publisher: Springer International Publishing


Reducing Stray Light

When integrating lenses into a multi-element system, a common limiting factor in overall performance is the entrance of stray light into the optical train. Stray light is energy outside of the clear aperture of an optical system that scatters off of the edges of an optical or mechanical component and reaches the eye (or camera) in the form of noise (rather than signal). One successful method commonly used to reduce stray light within a system involves blackening the edges of the optics. This is easily done, but care must be taken to ensure that the elements are replaced in their cell in the correct orientation and with the proper spacing between them maintained.



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