The GSO 0.5x focal reducer provides a nominal reduction of 0.5 times. The actual focal length reduction will vary a little over or under 0.5x depending on where the focal reducer is placed exactly in the optical path.
The reducer features 2-element fully multi-coated optical design and blacked lens edges in a black anodize aluminum filter cell.
It comes with outside thread M48x0.75 to fit with most 2" eyepieces the additional 2" filter thread inside accept all kinds of 2" color filters.
DESCRIPTION | |
Free aperture | 45 mm |
Optical system | multi-coated doublet |
Reducing factor | 0.5x (depending on the projection distance) |
Function | 0.5x Reducer for Visual and Astrophotography |
Max. distance to the camera sensor | approx. 55 mm |
Connection | Filter thread 2" (M48x0.75) |
2" filter thread on both side | ✓ |
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