Spacer for Star Analyser 100
With the help of this spacer you can achieve the proper spacing between the Star Analyser and the CCD sensor chip.
The minimum recommended distance in mm from the sensor to the tip of the nosepiece where the Star Analyser 100 screws in is 4x the camera pixel size in microns. E.g., for a ToUCam webcam, the distance would be 5.6x4=22.4mm.
If you find that the distance for your setup is less than the minimum value, we recommend purchasing sufficient spacers to bring the distance above the minimum.