Askar 107PHQ/130PHQ 0.7x Full Frame Reducer User Manual
Quick guide for the Askar 107PHQ/130PHQ 0.7x Full Frame Reducer. Learn how to install the reducer, understand backfocus requirements, and view technical specifications for your astrophotography setup.
Table of contents
Quick guide from the manual
This document provides instructions for the Askar 0.7x full-frame reducer, designed specifically for the 107PHQ and 130PHQ astrographs. It features a triplet design with one ED glass element to improve field of view and reduce exposure time.
Installation
- Screw off the 4-piece photographic adapter from your telescope.
- Unscrew the reducer cap.
- Insert the reducer into the focuser in the direction shown in the diagram.
- Proceed to capture images with the 0.7x reduction.
Technical Specifications
- Reduction Factor: 0.7x
- Backfocus: 55mm (standard)
- Included Adapters: M68, M54, M48
- Performance (107PHQ): Shortens focal ratio to 4.9 and focal length to 524mm.
Practical help
Before use
- Remove the 4-piece photographic adapter from the telescope.
- Ensure the reducer cap is removed before installation.
- Verify the focuser is ready for insertion.
- Confirm the required thread adapter (M68, M54, or M48) is selected for your imaging train.
Specs in practice
- 0.7x Reduction
- Reduces focal length and ratio, increasing field of view and shortening exposure time.
- 55mm Backfocus
- The required distance from the reducer to the camera sensor for optimal image quality.
- Thread Adapters
- Included M68, M54, and M48 adapters allow connection to various imaging trains.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.