Askar Flattener 1.0x 120APO (88205)

A field flattener is an optical element designed to correct the slight curvature of the image field produced by a telescope’s primary optics. This natural curvature causes stars near the edges of the image to appear softer or out of focus. By compensating for this effect, the flattener ensures that stars remain sharp and well-defined across the entire field of view, from the center to the edges of the frame.

The flattener is installed between the telescope and the camera, making it an essential accessory for astrophotographers who want evenly focused, high-quality images across the full sensor area.

Specifications

• Compatible telescopes: Askar 120/840 Triplet Apo

• Telescope-side connection: M84

• Camera-side connection: M48

• Focal length reduction: 1.0× (no reduction)

• Back focus: 55 mm at M48

• Number of lenses: 3

• Optical coating: Fully multi-coated

• Filter thread: Yes, 2-inch

General information

• Type: Flattener / Corrector

• Design: Field flattener

• Weight: 750 g