Useful data from Lumicon Tech support last night:
Dear Sir,
Thank you for your Email.
We do not sell a Giant Easy Guider anymore so that leaves the two other Cassegrain Easy Guiders: “2 inch Cassegrain Easy Guider” (LG1027) and the “Cassegrain Easy Guider for 7” to 9.25” SCT’s” (LG1025). They are identical except for how they attach to the back of the telescope. The LG1025 attaches to the back of a Schmidt Cassegrain Telescope (SCT) with an adapter that fits onto the standard ~2” diameter male adapter on the back of most SCT’s. The product name “7 inch to 9.25inch...” is somewhat limiting. This Easy Guider (LG1025) will fit on any SCT that has that standard ~2” male adapter on the back of it. With some of the early Meade 10” and larger SCTS and the early Celestron 11” and larger SCTs, they did not have the smaller ~2” male adapter. They had a much larger male adapter on the back side. The large Meade and Celestron SCTs I have seen lately have the larger adapter AND the smaller standard ~2” male adapter.
The “2 inch Cassegrain Easy Guider” (LG1027) attaches to a 2” female drawtube or 2” female extension such as LA1065, LA1066 or LA1075. In fact you can screw on either LA1065 or LA1066 to the back of your SCT then attach this Easy Guider (LG1027) to it.
So these two Easy Guider systems are almost the same. The LG1025 attaches with LG5100. The LG1027 attaches with LG5103 to a 2” extension. Both would work with your C9.25. The price is almost the same. I own an old C8. If I were buying one I would get the LG1025 because it is a little more solid attachment. I would probably get LG5103 adapter to so I can attach the off axis guider to a right angle finder for when the off axis guider will not fit underneath my telescope because I am looking close to straight up. My C8 has fork arms. I do not know if your C9.25 is fork armed or not.
If you have any other questions, please feel free to contact us.
Sincerely,
Joe B.
Tech Support
Lumicon
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To which I have asked:
Dear Joe,
It sounds like the LG1025 is for me then – just to check where it goes in the imaging train and what attachments I may need. At present I have a Meade electronic Motor focuser #1209 see image
http://www.cloudynights.com/ubbthreads/attachments/2314852-Scopes_smaller.jpg
I generally put either a 2” diagonal or a CANON DSLR 2” thread adapter into this. I wanted to check for the LG1025:
1)Does the OAG would attach after the Meade Motor focuser
2)What parts would you suggest I get so I can mate the OAG with the motor focuser?
3)Do I need any other parts to mate the OAG with the 2” Canon DSLR adapter?
4)Do I need any parts to mate the 1 ¼” Meade DSI to the OAG?
Many thanks,
Matthew