The STAR
ANALYSER has been designed to work with the smallest commonly used
sensor chips and the range of camera nosepiece designs commonly encountered.
Some cameras have larger chips and/ or shorter nosepieces and so
would benefit from an increase in distance of the device from the
sensor. The minimum recommended distance (in mm from the sensor to
the tip of the nosepiece where the STAR ANALYSER screws in) is 4x
the camera pixel size in microns. For example, for the 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. Each
spacer adds an adjustable 7-10mm. To date, the following cameras
are known to benefit from the use of spacers.
Meade
DSI 1 spacer (Note the DSI pro does not require a spacer)
Meade
DSI II 2 spacers
Meade DSI Pro II 1 spacer
Mead LPI
2 spacers
Celestron
Neximage 1 spacer
If
you are not sure if your particular setup requires spacers, please
e-mail us with details of your camera and the sensor to nosepiece
tip distance and we can advise you.