Askar 140APO 1x Full-Frame Field Corrector
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    • Askar 140APO 1x Full-Frame Field Corrector

    Askar 140APO 1x Full-Frame Field Corrector

    279.00
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    Askar 140APO 1x Full-Frame Field Corrector

    1x field corrector designed for the Askar 140APO refractor. It preserves the native f/7 focal ratio while correcting field curvature and coma. Its triplet optical design supports a 44 mm full-frame image circle and delivers sharp, consistent stars across the entire field with a standard 55 mm back focus.

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    Askar 140APO 1x Full-Frame Field Corrector

    Description

    The Askar 140APO 1x field corrector is specifically optimized for use with the Askar 140APO refractor. It does not modify the telescope focal length or the native f/7 focal ratio, while effectively correcting field curvature and coma. The triplet optical design provides full-frame 44 mm coverage, ensuring uniform image quality from the center to the edges of the sensor. The corrector features a standard 55 mm back focus measured from the base of the M48 male thread. The front thread is M92x1. On the camera side, M68x1, M54x0.75 and M48x0.75 adapters are supplied, with the M48 adapter incorporating an internal 2-inch filter thread. The entire assembly is CNC machined and includes threaded metal dust caps to protect the optics when not in use.

    Technical specifications

    • Optical compatibility: Askar 140APO

    • Correction factor: 1x

    • Focal ratio after installation: f/7

    • Focal length after installation: 980 mm

    • Optical design: triplet

    • Corrected image circle: 44 mm full-frame

    • Back focus: 55 mm from M48 male thread base

    • Front thread: M92x1

    • Supplied rear threads: M68x1, M54x0.75, M48x0.75

    • Integrated filter thread: 2 inch M48x0.75

    • Weight: 0.79 kg

    • Manufacturing: CNC machined

    • Caps: threaded metal front and rear caps

    Askar aplanisseur 140APO 1x

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