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Hexagons do not tessellate into a spherical surface. You would need to add pentagons. In addition you would need to find some first surface hexagonal and pentagonal mirrors or make your own with silver coating and they would still need to be ground or slumped I think to get anywhere close. Perhaps it would work with gaps in the mirrors to parabolise or add a corrector.
Last edited by Sunfish; 08-06-2020 at 05:18 PM.
Reason: Spelling
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