• ao8
  • AO-8T

    SKU: AO-8T


    Adaptive Optics unit for STT cameras

Product Description

The SBIG AO-8T is designed for the STT Camera Series.  It requires the FW8G-STT Filter Wheel or STT Remote Guide Head and OAG to operate the AO-8T.  It will also work with a StarChaser SC-2

AO Results

The images below are actual star images showing the effect of image wander corrected at 1 Hz and 10 Hz:

  • ao_mov_1hz1 Hz Corrections
  • ao_mov_10hz
    10 Hz Corrections

And the resulting size of the star image in a long exposure:

  • aox-1hz-corrected
    1 Hz Corrections
  • aox-10hz-corrected
    10 Hz Corrections

Other data gathered by Brad Wallis of JPL (Brad Wallis and Benoit Schillings developed the prototype for the original AO-7) show the the effect of rapid corrections on poor seeing.  At 1 Hz the larger, slower component is reduced, but the amplitude of the jitter remains about the same:


However, at a 5Hz correction rate, the faster jitter is reduced:


And at a 10 Hz correction rate, significant improvement is seen:


The improvement in stellar profiles can also be seen at corrections above 1 Hz.  First by looking at the non-AO guided image:


And comparing the non-AO guided image to the AO guided image there is again significant improvement in the FWHM of the star profile:


Telescope mounts cannot correct faster than about once per second.  The 10Hz rate of the AO will clearly result in improved resolution under the right conditions.

Additional Information

Computer Interface


OS Compatibility

Windows 32 and 64 bit OS, Mac


User’s Manual

Manual for the AO-8T adaptive optics unit.



Backfocus Table

Backfocus configuration table