- Commodity name: 60F 0.75x Reducer
- Commodity ID: 60F 0.75x Reducer
The Askar 60F 0.75x reducer, specifically optimized for the Askar 60F, is designed to enhance your astrophotography experience.
Designed exclusively for the Askar 60F, this 0.75x reducer reduces the 60F focal ratio to F5.1, offering a faster focal ratio while incorporating field-flattening correction capabilities. The faster focal ratio provides a wider field of view and shorter exposure times, making it particularly suitable for capturing large nebulae, dense star clusters, as well as faint or fast-moving celestial objects.

Featuring a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M50×1 threads on both ends for easy system integration. The included 60F photographic extension tube offers both M54×0.75 and M48×0.75 adapter specifications, allowing direct connection to the reducer for convenient setup. The reducer's adapter features a built-in M48×0.75 thread for direct attachment of 2-inch filters, eliminating the need for additional adapters.

Constructed using CNC machining, the reducer boasts a great finish and comes with front and rear metal thread caps for dust protection during storage.

Parameter
（After attaching）60F Focal length	311mm
（After attaching）60F Focal ratio	f/5.1
Lens Number	Triplet design
Back Focus	55mm（from the base of M48 male thread）
Weight	0.2kg
Rear-end thread type	*M501**

Size Diagram

Installation

Optical Path Diagram

Spot Diagram

Product introduction

Designed exclusively for the Askar 60F, this 0.75x reducer reduces the 60F focal ratio to F5.1, offering a faster focal ratio while incorporating field-flattening correction capabilities. The faster focal ratio provides a wider field of view and shorter exposure times, making it particularly suitable for capturing large nebulae, dense star clusters, as well as faint or fast-moving celestial objects.

Featuring a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M50×1 threads on both ends for easy system integration. The included 60F photographic extension tube offers both M54×0.75 and M48×0.75 adapter specifications, allowing direct connection to the reducer for convenient setup. The reducer's adapter features a built-in M48×0.75 thread for direct attachment of 2-inch filters, eliminating the need for additional adapters.

Constructed using CNC machining, the reducer boasts a great finish and comes with front and rear metal thread caps for dust protection during storage.

Specifications

Parameter
（After attaching）60F Focal length	311mm
（After attaching）60F Focal ratio	f/5.1
Lens Number	Triplet design
Back Focus	55mm（from the base of M48 male thread）
Weight	0.2kg
Rear-end thread type	*M501**

Size Diagram

Installation

Optical Path Diagram

Spot Diagram

Video

Images

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