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Equipment for the Serious Amateur Astronomer
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This is the largest focuser in the Borg helical focuser family, fully covering up to a 6x9 format film frame. It is recommended for use with Series 115 and 140 scopes.

Index:   80 microns
Length:   115 to 146 mm
Travel:   31 mm
Weight:   830 g
A:   M89 P1.0 Male
B:   M95 P1.0 Female

Part #8167
Medium Format Helical Focuser (M89)
2015-07-05