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DIY 1.25" Coma Corrector
in DIY Astronomer
Posted · Edited by GeoffWaldo
Is see the EKSMA lenses are 25.4 mm OD. All the filter carriers I find require a minimum substrate diameter of 26mm or so…the 25.4 mm OD lenses just fall through the filter holder! Do you have a part number or supplier for the filter jolders you used?
thanks!