Askar 60F 0.75x Reducer
169.00
Tax included 
Delivery times depending on the shipping method: Switzerland: 2 to 3 days; Europe: 7 to 10 days.
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Askar 60F 0.75x Reducer
The Askar 60F 0.75x is a dedicated optical reducer for the Askar 60F refractor, reducing the focal ratio to f/5.1 and expanding the field for full-frame astrophotography.
Askar 60F 0.75x Reducer
Description
The Askar 60F 0.75x reducer is specifically designed and optimized for the Askar 60F refractor. Once installed, it reduces the focal length to 311 mm and the native focal ratio to f/5.1, providing a wider field of view and shorter exposure times. This makes it especially suitable for imaging large nebulae, dense star clusters, and faint or fast-moving celestial objects.
The optical design is based on a triplet lens configuration that incorporates field-flattening correction and supports a 44 mm full-frame image circle. The standard back focus is 55 mm, measured from the base of the M48 male thread, ensuring easy integration with common imaging setups.
The reducer features M50×1 threads on both the front and rear. The Askar 60F photographic extension tube, supplied with M54×0.75 and M48×0.75 adapters, allows direct and convenient connection. The adapter also includes a built-in M48×0.75 thread for direct attachment of 2-inch filters without additional adapters.
Manufactured using CNC machining, the reducer offers a refined finish and is supplied with front and rear metal thread caps for dust protection during storage. With a weight of only 0.2 kg, it maintains excellent compactness and balance on the optical tube.
Technical specifications
Compatibility: Askar 60F
Reduction factor: 0.75x
Resulting focal length with 60F: 311 mm
Resulting focal ratio: f/5.1
Optical design: Triplet
Supported image circle: 44 mm
Back focus: 55 mm from M48 male thread base
Rear thread type: M50×1
Front thread type: M50×1
Filter thread: Integrated M48×0.75
Weight: 0.2 kg
Manufacturing: CNC machining
Included accessories: front and rear metal dust caps
Askar Réducteur 60F 0.75x
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Askar 60F 0.75x Reducer
The Askar 60F 0.75x is a dedicated optical reducer for the Askar 60F refractor, reducing the focal ratio to f/5.1 and expanding the field for full-frame astrophotography.