Shack-Hartmann - Shack-Hartmann 40 X 40
Alcor System Shack-Hartmann 40 x 40

Alcor System Shack-Hartmann 40 x 40

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This product is intended to measure accurately optical wavefront (> ?/55) coming from telescopes, refractors or any optical setup.

Or said more simply, it measures the optical performance of optical systems, based on Shack-hartmann wavefront analysis.

The product comes with a 5 megapixel camera and microlenses array, a visual aiming system and a set of collimators to acommodate with F/ number from F/3 to F/20. The next picture shows the uncooled version of the Shack-Hartmann. 

A cooled version of the camera sensor that performs the analysis is proposed, allowing long exposures (say, 2 to 5 minutes). Instead of an eyepiece, a sighting camera can be installed (camera on top) for both systems (cooled & uncooled).

System specifications

Camera resolution 5 megapixels
Camera frame rate 5 fps
Pixel size 2.2 x 2.2 µm
Microlens pitch 110 µm
Amount of spots 40×40
Wavelength range 400-900 nm
Aperture dimension Ø 4.6 mm
Tilt dynamic range 495 ? PTV
Focus dynamic range > 10 mm radius curvature
Measurement repeatability 2 nm rms @ ?=550nm
Absolute accuracy 10 nmrms @ ?=550nm
Camera interface USB 2.0
Operating system Windows 7,8 or 10
Weight 400g
System F ratio acceptance F3 to F20
Interface input diameter

Ø 2″ or 50.8 mm

 

Dynamic range for some aberrations

Defocus 5 900 nm RMS
Astigmatism  10 000 nm RMS
1st Spherical 2 914 nm RMS
Coma 2 660 nm RMS

 

What is included

  1. 40×40 shack Hartmann, with aiming device (10 mm reticle eyepiece)
  2. Reference LED source with 5µm pinhole
  3. +5V power supply
  4. Collimators, as many as required (From F3 to F/20), this picture shows one collimator attached to the shack Hartmann and another to extend the F ratio
  5. USB cable
  6. Advanced Analysis Software (Zonal and modal wavefront reconstruction, PSF, MTF and much more) USB stick
  • Optional item : the Pelican Case
  • Optional item : double pass flat mirror beam splitter (down to F/4)
  • Optional item : double pass flat mirror beam splitter (down to F/3)

Shack hartmann 40 included in the box

 

Please advise, with your quote, what is the focal ratio to be tested to include the right eyepiece with your purchase.

Col # Collimator focal length F ratio range
1 12.5 mm F3 to F4
2 15 mm   F3.5 to F5
3 17.5 mm F4.1 to F5.8
4 20 mm F4.7 to F6.5
5 25 mm F6 to F8
6 30 mm F6.9 to F10
7 40 mm F9 to F13
8 50 mm F12 to F16
9 60 mm F14 to F20

 

The collimator can be detached and exchanged as depicted in the image below

shack hartmann 40x40 collimator

 

 

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