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strongmanmike2002 | all galleries >> Awards, discoveries and publications >> Miscellaneous Albums >> High accuracy collimation using CATSEYE collimation tools > Centering the secondary under focuser
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Centering the secondary under focuser

Initially with the focuser clear the secondary is eyeball
centred under the focuser (not all that evident in this image though)

CATSEYE Collimation systems:

other sizes: small medium large original auto
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