I don't think the nexguide will work with an OAG. I have one and when I asked Celestron about using it with a 9.25SCT and an OAG they told me I would need a 4-5 magnitude star as a guide star.
There are not many DSOs with a 4-5 magnitude star in the same field. The nexguide is not sensitive enough to use with an OAG. I haven't tried it - but there are forums about it.
Regards,
Tony.
|