Quote:
Originally Posted by originaltrilogy
So these have lens inside that bends the light before it gets to CCD instead of moving the mount for little fixes yes?
Does image degrade with extra glass in path?
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I use an AO8 and find it very useful on my EQ6. I am imaging at 1800mm fl and it made guiding much better especially in dec as it compensates for the backlash very well.
I have very recently changed to a lovely tak NJP mount and I think that the benefit will be less as its trackiing is significantly better than the EQ6.
I have an AO7 for sale and it worked just as well as the AO8 but took up more back focus hence the change.
The AO7 is a mirror that moves rather than a lens. Neither seem to cause image degredation although the AO8 in theory has more potential to do so.