SBIG AO-X for STX and STXL Cameras

$2,195.00
Article number: AO-X
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AO-X


 

The AO-X is a large aperture AO designed to be compatible with all STX and STXL series cameras, including the STX-16803, STXL-16200, STXL-11000 and STXL-6303.  The AO-X requies minimal backfocus while offering a large 3" aperture optical element, which is large enough to cover the KAF-16803 CCD sensor.

The AO-X requires an off-axis guide camera behind the device.  For STXL cameras, we recommend using the FW8G-STXL filter wheel.  For STX cameras, the AO-X stacks on top of the FW7-STX and STX Guider.  (Can also be used with FW5-STX.)  The AO-X 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:  

 
      

 

                 1Hz Corrections                                 10Hz Corrections

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

 

 

                                                    1Hz                                                                                                                   10Hz

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 canot correct faster than about once per second.  The 10Hz rate of the AO-X will clearly result in improved resolution under the right conditions.


Specifications

Power
Supplied through Camera's I2C Port
Dimensions
6 x 7 x 1.2 in.
Weight
2.2 lbs (1 kg)
 

 

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