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Opticron Binoculars & Telescopes

Focal Reducers & Correctors

 

Coma corrector
77226 Coma Corrector 3
Usable with: R200SS
Function: Reduces coma aberration around the edge of field of view. The focal length is not changed.
Prime focus photography: T-mount required
Visual observation: Cannot be used with 73839
Weight: 83g (2.93oz)
Focal reducer
73666 Focal Reducer 0.67x for ED Series
Usable with: ED81S, ED115S, ED103S
Function: Reduces focal length by 0.67x
625-419mm (f5.2) for ED81S
795-533mm (f5.2) for ED103S
890-596mm (f5.2) for ED115S
Prime focus photography: Requires 73876 or 73878 adapter plus T-mount
Weight: 174g (6.14oz)
Focal reducer
77229 Focal Reducer for VC200L f/6.4
Usable with: VC200L
Function: Reduces focal length by 0.71x
1800-1278mm (f6.4)
Prime focus photography: Requires 73876 or 73878 adapter plus T-mount
Weight: 85g (3.0oz)
Focal reducer
73871 Focal Reducer 0.62x for VMC200L
Usable with: VMC200L, VMC260L
Function: Reduces focal length by 0.62x
1950-1209mm (f6) for VMC200L
3000-1860mm (f7.1) for VMC260L
Prime focus photography: Requires 73876 or 73878 adapter plus T-mount
Weight: 183g (6.46oz)
Focal reducer 77228 Focal Reducer 0.72x for AX103S
Usable with: AX103S
Function: Reduces focal length by 0.7x
825-578mm (f5.6) For APS-C format camera
Prime focus photography: Requires 73876 or 73878 adapter plus T-mount
Weight: 140g (4.94oz)
Corrector PH for R200SS
77237 Corrector PH for R200SS
Eliminates aberration from parabolic mirror surfaces.
C-Mount Tele-extender 2.4x
73748 C-Mount Tele-extender 2.4x