TS OpticsTSB21T2 2x Barlow 1.25" with integrated T-thread and Photo Adapter

TS OpticsTSB21T2 2x Barlow 1.25" with integrated T-thread and Photo Adapter

Achromatic Barlow for visual and photographic use
Manufacturer : TS Optics
SKU : TSO-TSB21T2
Price: 54.00 € incl tax 19% (Germany)
Delivery date : 1-4 days
Product description
TS OpticsTSB21T2 2x Barlow 1.25" with integrated T-thread and Photo Adapter

The 2x Barlow lens doubles the magnification with any given 1.25" eyepiece, without any noticeable loss in image quality.

The large lens aperture allows you to use even very long focal length 1.25" eyepieces such as the TS Super Plössl 32 mm without vignetting. Multi-coated lenses and blackened lens edges result in optimum contrast and image sharpness. In our opinion the quality is en par with many much more expensive Barlows.

This 2x Barlow lens is particularly versatile
  • Visual Use - 2x
    Just insert the Barlow lens between the eyepiece and the telescope and you will double the magnification. At the same time you will retain the comfortable eye relief of the longer focal length eyepiece.
  • Visual Use - 1.5x
    Just screw the lens element of the Barlow lens directly into the filter thread of your eyepiece. The resulting magnification is reduced to about 1.5x.
  • Glass Path Corrector
    Binoviewers require a long back focus distance that most telescopes do not provide. With the Barlow element you can move the focal plane further out, eliminating this problem in most cases. The effective magnification factor is about 2.6x with most binoviewers.
  • Teleconverter
    Just screw the lens element of the Barlow lens into a 1.25" nose piece for your camera (e.g. TS FA 1). This turns the Barlow into a photographical converter with a factor between 1.5x and 2x (depending on the distance between lens and camera sensor).

Photography

The special feature of this Barlow lens is its integrated T2 (M42x0.75) thread which allows it to be used photographically. For example, you can screw it directly into the T-adapter of your DSLR camera. The resulting magnification factor for this use is 2.5x. This of course works also with other cameras with T2 thread, but the factor may be different, depending on the distance between the Barlow lens element and the camera´s sensor.

The big advantage is that the focus point moves away from the telescope. So you can adapt DSLR cameras also to Newtonian telescopes with very close focus, like the beginner Newtonian telescopes with 76 mm, 114 mm and 130 mm aperture. Of course, also with all other telescopes, the photo results will be very good.

Delivery contents
  • 2x Barlow lens 1.25" with T2-thread
  • plastic dustcaps on both sides
Products specifications
Connection to eyepiece1 1/4"
Connection to telescope1 1/4"
Connection to camerawith optional T2 Adapter
Lenses2 Lenses
Unobstructed diameter23 mm
Housing materialMetal
CoatingFully multi-coated
Filter thread1.25" standard filter thread
Magnification2 x / 1.5 x

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