SBIG AO-8A Adaptive Optics

SBIG AO-8A Adaptive Optics

$999.00 USD

Adaptive Optics unit for Aluma CCD and STC cameras.  Requires a StarChaser SC-2 (or an older self-guiding system).

AO-8A is the standard model for use with Aluma CCD, STC, and STF series cameras.

AO-8T supports the discontinued STT cameras.  These are built to order.

AO-8 supports the discontinued ST-7 series cameras.  These are built to order.



Product Description

The AO-8A works with the STC and Aluma CCD series cameras.  It requires an off-axis guide camera behind the device; typically the StarChaser SC-2 is used.

For those with older equipment, the AO-8A and StarChaser SC-2 are also compatible with STF and STT camera models.  It will also work with the FW8G-Aluma self-guided filter wheel.  (Please note that STF-402 is not supported due to a different mounting interface.)

Note:  When using with StarChaser with AO, you will need a StarChaser to AO-X/AO-8T Adapter Cable.  The necessary adapter cable is included in our StarChaser SC-2 / AO-8A Bundle.

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_10hz10 Hz Corrections

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

aox-1hz-corrected1 Hz Corrections

aox-10hz-corrected10 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

OS Compatibility

Windows 32 and 64 bit OS, Mac

Computer Interface



User’s Manual

Manual for the AO-8T adaptive optics unit.



Backfocus Table

Backfocus configuration table


You may also like…