TS-Optics 2x APO Barlow Lens 1.25"

TS-Optics 2x APO Barlow Lens 1.25" – Product description

TS-Optics 2x APO Barlow Lens 1.25" belongs to the Imaging Correctors / Reducer / Barlow range. Compact three-element 2x APO Barlow lens with 1.25-inch connection, 26 mm clear aperture, full multi-coating, brass compression ring and 1.25-inch filter thread.

Key product details

• Lunar and planetary observing
• Photographic focal-length extension
• Telescopes with a 1.25-inch eyepiece connection
• 2x focal-length extension
• Three-element apochromatic design
• 1.25-inch barrel

Product overview

The TS-Optics 2x APO Barlow doubles the telescope's effective focal length and therefore doubles magnification with the same eyepiece. Its three-element design is intended to minimise additional chromatic error.

Suitable applications

• Lunar and planetary observing
• Photographic focal-length extension
• Telescopes with a 1.25-inch eyepiece connection

Included equipment

• 2x focal-length extension
• Three-element apochromatic design
• 1.25-inch barrel
• 26 mm clear aperture
• Fully multi-coated optics
• Brass compression ring
• 1.25-inch filter thread

Doubling is not always useful

A 10 mm eyepiece behaves approximately like a 5 mm eyepiece with a 2x Barlow. Whether that magnification is useful depends on aperture, optics and atmospheric seeing.

Practical note

A Barlow is especially useful when you want to keep using existing high-quality eyepieces instead of buying many additional short focal lengths.

Selection note

Related products: Telescope accessories at Optikshop24.