Quote:
Originally posted by acropolite
There's nothing in the Meade documentation to suggest that this is the case. The 2" diagonal is listed as suitable for all LX models including the 90. The Lx90 optically is identical to the 8' LX200.
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Phil,
I am well aware that the OTA is the same as the 8" LX200. The same issues may also apply to the Celestron C8 and C9.25.
Do you really expect Meade to come out and tell you that there may be a problem here ? Come on, Meade have been copying other peoples designs and over exaggerating claims about their equipment for decades. Their latest one is their new RCX 400 which they claim is a "modified" Ritchey Chretien. By definition a Ritchey Chretien has a concave hyperbolic primary and a convex hyperbolic secondary. Meades new scope uses a spherical primary yet they want to put their hand up and call it a Ritchey Chretien, based on the success of this design by companies like Optical Guidance Systems, Parallax Instruments and RCOS. Meades Superwides introduced in the 80's were "very" similar to the Televue Widefields and the Meade Ultrawides were "very" similar to the original Televue Naglers, do I need to continue, or are you starting to get the picture of the company we are dealing with ?
I am not 100% certain that it is a problem, but I am about 80% sure that a number of people have minor issues using the 2" UO MK70 40mm in their 8" Cats. It is not the end of the world, you lose some light and stars at the EOF, but then why go to the low power widefield view if you dont get it all anyway.
I am merely trying to point out that this may be an issue before you part with your money. Try to get out to a star party and try out the components you are thinking of buying, even if its in a C8 or 8" LX200 or something, any CAT with a 1.25" visual back.
Clear Skies
John B