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Is a 12 SCT too much for a Mach1?

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#1 Festus

Festus

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Posted 14 September 2009 - 09:32 PM

I have been debating what to do with my Meade 12" LX200gps. I am thinking about removing the OTA and trying it on my Mach1 for visual use and imaging planets. It has been a reliable scope over the years but has not been getting much use lately. My observatory doesn't have enough room for two mounts and I have to remove the Mach1 to use the 12". It would be nice just to pick an ota for the evening, add some counter weights and start viewing.

I have read Rod Mollise's chapter on choosing a CAT and he states the Mach1 can handle a 12" cat ( checking the weights I would add the meade is rated at 40lbs, losmandy bar 3-4lbs, webcam negligible). AP states 8-11" scts, company 7 has an article which doesn't really state not to use a 12" for weight but something to do with focal length being an issue - for the serious astrophotographer.

Has anyone tried it and if so what was your experience? Should I part with the old 12'er and get something smaller to be safe?

Thanks

#2 RAKing

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Posted 15 September 2009 - 04:53 PM

Physically, the Mach1 can carry the load. Aesthetically, I'm not so sure.

I use a C11 on my Mach1 and it is "okay" for visual. Settle times are 1 - 2 seconds and I have become used to some focuser shake if I'm not careful. The M10 weighs the same as the C11 after you add a dovetail, so I figure it would perform identically as well.

Your M12 is much bigger and heavier. I wish I could lift it to try, but I cannot handle anything that big more than once. :cool: I suspect you would see more of the same as far as wiggles and jiggles. The last experiment I tried was to mount my 10 inch Newt on the Mach1. It didn't work so well, plus I messed up my back, and spent a month in a brace. A-P offers conservative capacity ratings for their mounts - but they are pretty close to the mark for acceptable results.

Ron

#3 Festus

Festus

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Posted 15 September 2009 - 07:18 PM

Thanks Ron that is the kind of advice I needed. I'll keep the 12" where it is, mounted on its forks, happy. Maybe trade it in and get one of those new GSO 10" scopes when they become available.






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