A great breadth of expertise is required to manufacture a space qualified, wide-field Michelson interferometer.
Polarizing, non-polarizing, cemented, optically contacted (epoxy free bonded), hexagonal, square, small (1mm), large (45mm), UV, visible, IR. Material selection, coating design, modeling of phase & polarization, mechanical design, process development, quality planning, glass shaping and polishing, optical contacting, cementing and finally testing, testing and testing. Of course that's what makes it so interesting and challenging to work on these projects.
If you have an interest in this kind of device do not hesitate to contact us to discuss the various parameters and trade-offs. Free advice is our specialty.