| Optical
Quality |
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| • | We
have demonstrated a lot of control over optical |
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| aberrations: |
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| – | Radial
coma: re-space body 4/ element 9 |
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| – | Lateral
coma: moving body 4 in x & y |
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| – | Focus:
move body 4 axially (effect on radial coma not |
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| yet
investigated) |
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| – | Focus:
presently not far enough back of dewar window, |
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| but
collimator can be moved forward to cure this. |
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