Compact Barlow Lens, 2.5x Magnification, 1.25" External Fitting Diameter for Telescopes, Eyepieces and Camera Adapters

This compact Barlow lens can be attached to the end of standard 1.25" eyepieces to increase the overall image magnification by around 2.5 times. It consists of two parts, a Barlow lens (with M30x0.75mm thread) and a detachable eyepiece adapter tube (with M28.5x0.75mm thread). This design enables the Barlow lens to be compatible with 1.25" eyepieces with either internal barrel threads.

This compact Barlow ensures perfect alignment between the centre of the Barlow and the eyepiece. It also enables correct image focus on DSLR cameras when the cameras are attached to telescopes through a 1.25" T-adapter set. Please see note below for further information. 

Main features:

• Increase the overall image magnification by approximately 2.5 times.

• Compact design. It can fit 1.25" (31.75mm) eyepiece barrel with either M30x1mm female threads, or with M28.5x0.75mm threads. These thread features are among the most commonly used eyepiece barrel threads currently found in the market.

• This compact Barlow lens enables a perfect alignment between the central axis of the eyepiece and the Barlow lens.

• Built with quality optical glass and with multiple broadband anti-reflection green coatings to reduce light reflection and to limit the effect of chromatic aberration.

• Built with metal frame and metal eyepiece adapter tube.

• Size: overall length: 21mm; eyepiece adapter tube diameter: 31.5mm

• This Barlow lens can fit the Plossl eyepieces and 1.25" T-adapter/T-ring set which are available from this store.

Note: Sometimes when a DSLR camera is connected to a telescope with the camera lens being removed, the image cannot be focused on the camera's viewfinder. This is often because the image focus point is shifted beyond the focus adjustment range of the telescope. this compact Barlow lens can be attached to the end of the 1.25" adapter tube (as shown in the 3rd picture of this listing). The compact lens enables the cameras to get a focused image through a wide range of telescopes. 

Please note that this listing is for a compact Barlow lens only, as shown in the first picture. The 2nd and 3rd pictures show how the compact lens can be attached to 1.25" eyepieces or to 1.25" T-adapters, but the telescope eyepiece and camera adapter are not included in this listing. These can be ordered from this store.