Astronomy Specialist

BAADER CARL ZEISS 1.25" ABBE-BARLOW LENS 2x

$470.00 USD
SKU: BA1603321

Baader Planetarium

Barlow

  • 1.25" barrel
  • M42 x 0.75

0.11 kg


 

The Carl Zeiss Abbe Barlow lens is an exceptionally high quality 2x Barlow for both visual and photographic use. Made by Carl Zeiss in Jena and with a 1.25" / T2 ClickLock by Baader, the Abbe Barlow has incredible performance over the visual spectrum.

Carl Zeiss's multi-layer anti-reflection coatings are regarded as the best ever made, with only 0.2% loss over the exact spectral region where the night-adapted human eye is most sensitive. This extremely high efficiency also translates to near-zero coating scatter for the highest contrast ever seen. No lens-system has ever been coated to more stringent requirements for visual observation and for visual spectrum photography as well.

 

Transmission curve of Zeiss Abbe Barlow lens Transmission curve of the Carl Zeiss Abbe Barlow lens.

 

The Abbe Barlow lens consists of two parts. The front barlow section ends with a photographic T-2 thread suitable to directly connect onto standard DSLR T-rings. A Baader ClickLock eyepiece clamp with rotary clamping system is connected to the T2 thread.

An enlargement of the imaging scale up to three times is possible without loss of quality. On the first T-2 thread you can connect normal T-rings, so you have a 2x Barlow lens - with 1¼ " barrel - in front of every camera or DSLR camera housing. If you add T-2 extensions the magnification can be extended by up to 3x. We recommend using Baader's T-2 Varilock clamps for stepless adjusting of the optical length - either the Varilock 20 - 29mm (BA2956929) or Varilock 29 - 46mm (BA2956946).

 

Magnification factor
2 - 3 x
Optical design
Barlow
Connection telescope side
1.25" barrel
Connection eyepiece side
1.25" nosepiece, T2 (M42 x 0.75) thread
Weight 110 g
SKU BA1603321

 

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BAADER CARL ZEISS 1.25" ABBE-BARLOW LENS 2x.

BAADER CARL ZEISS 1.25" ABBE-BARLOW LENS 2x

$470.00 USD

Optical design

Barlow

Image circle

Focal ratio

Aperture

Focal length

Optical thickness

Threads

1.25" barrel, M42 x 0.75

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

Filter size

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

0.11 kg

Length

Width

Height

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