Askar 0.7x Reducer for Askar 107PHQ / 130PHQ / 151PHQ Telescopes

The Askar 107PHQ/130PHQ/151PHQ Universal reducer is a premium quality reducer designed specifically for the Askar 107PHQ, 130PHQ and 151PHQ telescopes.

Askar 107PHQ/130PHQ/151PHQ Universal Reducer Image Circle

Featuring a generous 0.7x reduction factor, the Askar 107PHQ/130PHQ/151PHQ Universal Reducer can provide a faster optical system with a much wider field of view. Askar claims this reducer produces round stars on a full frame sensor. In practice, Agena Astro affiliate Dark Sky Geek / Julien Lecomte tested this reducer on the 151PHQ and found misshapen stars near the edges of a full frame sensor. Therefore, we recommend using an APS-C sensor or cropping the image on a full frame sensor to achieve round stars with this reducer. However, modern tools like BlurXTerminator may be able to help reduce the misshapen stars near the edges of a full frame sensor.

Benefits of Using the Reducer

By adding this reducer, you can have the best of both a wide, fast astrograph and a longer focal length deep sky telescope.

The 0.7x reducer has the following effects:

• Askar 107PHQ: Reduces the effective focal length from 749mm to 524mm and focal ratio from f/7 to f/4.9
• Askar 130PHQ: Reduces the effective focal length from 1000mm to 700mm and focal ratio from f/7.7 to f/5.4
• Askar 151PHQ: Reduces the effective focal length from 1057mm to 740mm and focal ratio from f/7 to f/4.9

Askar 107PHQ/130PHQ/151PHQ Universal Reducer Back Focus

The reducer is a triplet design with one ED lens element, and features a standard 55mm back focus for seamless connection with dedicated astronomy camera systems like ZWO and QHY. It also includes three threaded adapters depending on which kind your imaging train needs:

• M48x0.75
• M54x0.75
• M68x1