Askar 52mm f/4 Guide Scope

Product Overview

The Askar 52mm f/4 Guide Scope is a compact, bright autoguiding telescope for astrophotography setups. With a 52mm aperture and 208mm focal length, it provides a practical balance of light-gathering, image scale, and portability for guiding deep-sky imaging rigs.

Who Is This Product Best For?

This guide scope is best for astrophotographers who need a reliable 52mm guide scope for portable or mid-size imaging telescopes and want a simple, lightweight guiding solution.

Why Choose This Product?

• 52mm aperture and 208mm focal length.
• Fast f/4 focal ratio for bright guide-star pickup.
• Doublet objective design.
• Integrated helical focuser with 25mm focuser travel.
• XY-axis adjustment to help align with the main optical tube.
• Rear adapter support for 1.25-inch and M42x0.75 connections.

Recommended Uses

• Autoguiding for deep-sky astrophotography.
• Portable imaging rigs.
• Finder-scope style alignment and target acquisition.
• Lightweight secondary optical system for astronomy setups.

Compatibility and Accessory Notes

The guide scope includes rear adapter support for 1.25-inch and M42x0.75 connections, with 40mm extension tubes supplied for setup flexibility. The base fits universal finder slots and includes 1/4-inch and M4 threaded holes.

Important Limitations

• Requires a compatible guide camera for autoguiding.
• Mounting fit should be confirmed before purchase.
• Designed as a guide scope or finder-style telescope, not a main high-resolution imaging telescope.

Frequently Asked Questions

What is it best used for?

It is best used as a compact 52mm guide scope for astrophotography.

Does it have a helical focuser?

Yes, it includes an integrated helical focuser with 25mm of travel.

Can it connect to common guide cameras?

Yes, the 1.25-inch and M42x0.75 rear adapter options support many common guide-camera setups.

Our Recommendation

Ontario Telescope recommends the Askar 52mm f/4 Guide Scope for customers who want a simple, capable guide scope with more aperture than a 30–32mm mini guide scope.