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C11hd vs Meade 12" f/8

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#1 Starhuckster

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Posted 24 April 2013 - 06:44 AM

Has anyone done a side by side comparison? Is there a thread about this already?

#2 Lane

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Posted 24 April 2013 - 05:49 PM

28lbs for the 11 vs 56lbs for the 12 is all you really need to know. The Meade is even heavier than the C14 HD, which is only 45lbs.

I have had my C11 next to a 12 on two occasions and saw nothing in the 12 that I could not see just as well in my C11. In fact the last time I did that comparison the C11 beat the 12 pretty badly, but only because the 11 was able to adjust to the dropping temps better that night. I believe the mirrors in the Meade scopes are much thicker than those in the Celestron, which causes them to adjust to temperature changes slower.

I am sure there are some faint galaxies or planetary nebula that a 12 could see that the 11 could not, but I will bet that list is pretty small.

As far as the HD vs ACF goes, the HD approach is better according to everything I have read. Apparently you have to have a corrector lens, as celestron used, to properly correct for the various aberrations in an SCT. Just reshaping the secondary is not enough.

#3 MikeBOKC

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Posted 24 April 2013 - 06:01 PM

Had my standard CPC1100 next to a Meade 12 as well, and the views were essentially identical. I can't speculate on the C11HD, but I would bet it would be better to the edge as noted above, and probably the same on axis.

#4 Bill Barlow

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Posted 24 April 2013 - 07:43 PM

I wonder if the 56 pound weight of the Meade f/8 12" is a misprint. My Meade 12 ACF OTA weighs 39-40 pounds with the Losmandy rail, the AP visual back and a2" diagonal, so I would think the f/8 version is probably closer to 45 pounds. Especially if the Meade f/8 14" weighs 63 pounds, there must be a larger weight difference between the f/8 Meade 12" and 14" OTA's than 7 pounds.

I owned both C11's and M12's and I prefer the views through the Meade. But YMMV.

Bill

#5 Lane

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Posted 25 April 2013 - 02:10 PM

The 56lb weight is listed on OPT's site. Meade has never published the weight of their scopes because of discussions like this one.

#6 Griffin!

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Posted 25 April 2013 - 02:18 PM

Meade lists the weight of the 12" LX200 as 34.66 lbs.

I can see the f/8 being a bit heavier with new focuser, but not 20 lbs more.

#7 KevH

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Posted 25 April 2013 - 03:04 PM

Link to the 34.66 lb weight...
LX200 Specs

I agree, there is no way the f8 ota weighs that much more than the f10.

#8 mega256

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Posted 25 April 2013 - 03:30 PM

I would belive that the true weight of the 12" is about close to 40 lbs with the mounting dove tail bar on it? I just measured my C11-HD with a focuser (jmi-elect.) and dovetail bar and its real close to 29 lbs...

Wonder if that spec from meade is stripped dowm ? Can anyome try theres ?
But I also agree.....specs from meade can use some improvments....

#9 Starhuckster

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Posted 26 April 2013 - 05:50 AM

I was just looking at some used Meade 7" Maks and some of those seem to have iron weights built in, so maybe they're making that an option again ;)






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