Astromania Barlow Lens 2X 2 in - Dual Power ED Glass for Telescopes

In this review the Astromania Barlow Lens 2X proves to be a practical, no-nonsense accessory for observers who need extra focal length without swapping eyepieces. It is aimed at amateur astronomers and astrophotographers who want a reliable method to double magnification while keeping image quality high; the single biggest reason to buy is its combination of a larger 2 in diameter, ED glass that reduces colour fringing, and fully multi-coated surfaces that cut reflections for clearer, higher contrast views.

Key Features

• 2X Magnification: Doubles the effective focal length of the telescope to make compact targets appear larger in the field or on camera sensors.
• 2 in Diameter: Accepts 2 in eyepieces directly and reduces shadowing on smaller camera chips for cleaner astrophotography frames.
• ED Glass Element: Extra-low dispersion glass keeps colour aberrations to a minimum and delivers sharper star images.
• Fully Multi-Coated Surfaces: All lens surfaces are multi-coated to reduce internal reflections and improve contrast in high-contrast night-sky scenes.
• Metal Body with Brass Ring: Robust metal construction and internal brass ring ensure secure threading and durable, repeatable connections.
• High-Grip Exterior: Textured finish gives a solid grip even when handling the Barlow in cold conditions or while wearing gloves.

Who It's For

The Astromania 2X Barlow is best for hobbyist astronomers who already own a quality telescope and want an inexpensive way to increase magnification for planetary viewing or to boost effective focal length for eyepiece projection astrophotography. Its 2 in diameter and reduced shadowing make it well suited to users who switch between visual observing and small-format camera work.

It is less appropriate for those seeking extreme, specialty optics or users who require multiple magnification options in a single device; observers wanting a complete set of powered extenders or replacement eyepieces may prefer to buy a matched eyepiece set instead.

Pros & Cons

Pros

• Solid build quality and metal finish give a durable feel and secure fittings.
• Visible improvement in image contrast and reduced colour fringing thanks to the ED element and multi-coatings.
• Large 2 in opening avoids shadowing and works with both 2 in and 1.25 in eyepieces via its reducer.
• Practical design details like a brass internal ring and filter threads improve usability for astrophotography.

Cons

• Not a substitute for changing to higher-quality eyepieces when the goal is the absolute best edge-to-edge sharpness.
• Limited to a fixed 2X power, so users needing variable magnification must add other accessories.

Specifications

Brand	Astromania
Magnification	2X
Barlow Diameter	2 in (with 1.25 in reducer)
Glass Type	ED glass element
Coatings	Fully multi-coated lens surfaces
Body	Metal with internal brass ring
Filter Thread	2 in thread on lower part and reducer adapter

Our Verdict

The Astromania Barlow Lens 2X is a reliable, well-built adapter that delivers practical magnification gains with minimal colour aberration and reduced reflections, making it a good value for observers and entry-level astrophotographers who need more focal length without buying extra eyepieces. Its 2 in size and robust construction make it especially useful for users who switch between visual and small-format imaging.

Frequently Asked Questions

Will this Barlow work with 1.25 in eyepieces?
Yes. It includes a reducer adapter so 1.25 in eyepieces can be used while retaining the 2X magnification.

Is the lens suitable for astrophotography?
Yes. The 2 in diameter and minimized shadowing on small camera chips, plus multi-coated ED glass, make it suitable for eyepiece projection and some small-format imaging setups.

Can I attach filters?
Yes. There is a 2 in filter thread on the lower part of the Barlow and on the reducer adapter for adding filters.