Askar 1.0x corrector/flattener for 140APO

The Askar 1.0x corrector for the 140mm f7 Triplet APO delivers very good imaging throughout the entire image field.

♦ developed for the Askar 140APO

♦ provides a very good image throughout the entire image field

♦ suitable for full frame cameras
 
Askar 1.0x Flattener for the 140mm f7 Triplet APO
The Askar 140APO 1.0x Flattener is optimized for the Askar 140APO and delivers a very well corrected image field.

The 1.0x flattener does not change the focal ratio of the telescope. After connecting to the Askar 185APO, the aperture ratio of 7 is retained. The flattener corrects field curvature and coma, resulting in perfect field edges and finer star points.
The 1.0x flattener is designed as a triplet and offers a 44 mm image circle, making it suitable for full-frame cameras. The weight is 0.75 kg. The standard focal length of the M48 thread is 55 mm. The telescopic-side thread is M84x1. On the camera side, the reducer is equipped with adapters in sizes M54x0.75 and M48x0.75. At the same time, it has a built-in 2-inch filter thread M48x0.75. The CNC-milled metal dust caps protect against damage and dirt when not in use.

 
Optical construction: triplet
Back Focus: 55mm（from the base of M48 male thread）
Camera-side threads: M68×1, M54×0.75, M54×0.75-M48×0.75 (M48×0.75 filter thread inside)
Weight: 0.75kg

♦ Flattener
♦ Dust caps