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Fred, It doesn't have an internal guiding chip.. This one is in the same body as the old ST402ME... Its got the faster USB2.0 electronics, downloads the full 8.3mp frame in 7.7 seconds and cools to -40c.
The STX-8300 has a lot more features, but is listed at optcorp at a pre-order price of around $6000USD. With this camera I get the same imaging performance (perhaps slightly less cooling headroom, but I don't see myself trying to cool it past -15c anyway. I will continue to use my QHY5 for guiding the setup through an OAG infront of the filter wheel.. I have no need for Adaptive Optics at the 480mm focal length I image at..
This camera will do what I want it to though. Without a doubt, for narrowband, wide field imaging, this camera will put a smile on my face...
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