• ao8
  • AO-8T

    SKU: AO-8T

    $795.00

    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.

The AO-8T requires an off-axis guide camera behind the device.  We recommend using the FW8G-STT filter wheel.  The AO-8T can also be used with a Remote Guide Head if you have a custom Off-Axis Guider setup.

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:

ao_1hz

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

ao_5hz

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

ao_10hz

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

aox_img2

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

ao_img2

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

I2C

OS Compatibility

Windows 32 and 64 bit OS, Mac

Documentation

User’s Manual

The SG-4 Camera Software includes the SG-4 control software, ASCOM driver, and documentation.

Download

 

Backfocus Table

Backfocus configuration table

Download