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Old 06-12-2007, 02:07 PM
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citivolus (Ric)
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Join Date: Sep 2007
Location: Carindale
Posts: 1,178
The Orion has square pixels and a smaller pixel size, which would mean you could use it on slightly lower focal lengths for guiding. Similar QE on both from what I understand (~60%?), so slightly less sensitive than the DSI pro when coupled with the smaller pixels. Of course, those QE numbers are third hand and therefore suspect.

The Orion wouldn't need a GPUSB for guiding while using PC mount control, so it also frees up a port on your laptop. Of course this doesn't help out with your LXD75 as you mention it has no guide port, so you would still need to release scope control from the guiding software whenever you wanted to do a goto from the PC.

Oh, and the Orion has a much larger sensor, so you have a much better chance of finding a suitable guide star
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