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Wanted: Meade 12" LX90 GPS

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#1 7lx200gps

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Posted 07 August 2012 - 02:49 PM

What are you thoughts on the 12" LX90???

#2 Bob Griffiths

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Posted 07 August 2012 - 03:28 PM

The 12 inch lX90 is seriously under mounted..

WAIT for a Lx200

Bob G

#3 faltered

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Posted 07 August 2012 - 05:06 PM

yeah, i agree with that statement as well. wait for an LX200

#4 eliasx1

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Posted 07 August 2012 - 09:54 PM

Skip the lx90 and go with the lx200 and the giant field tripod

#5 thesubwaypusher

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Posted 08 August 2012 - 11:41 AM

The 12" LX90 is horribly undermounted, I have seen this for myself. I have a 12" LX200 and even that at times (breezes and/or wind) seems undermounted. If you are thinking that the tripod is 30 pounds lighter, you would be correct, but you can use that one for the LX200 also.

Good luck, Chris

#6 stanislas-jean

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Posted 10 August 2012 - 12:29 AM

If you intend to use the lx90 in altazimuthal mode this should be enough. However if you have place for installing a permanent pier on ground do it because this will solve lot of checking problems.
I have the lx200 12" and a little chock vibration at the eyepiece is disappearing after 1-2s at very high power. The lx90 should be a little worst. For the pier select a square section tube, better than the round section with less amount of vibration succeptibility (here just a 4x4" square section and 3 feet high).
The wind has to be substantial for troubling at high power.
Stanislas-Jean

#7 rcdk

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Posted 10 August 2012 - 05:46 PM

Everyone says it is just horrible, but that hasn't been my experience. A little wind will cause some shake, but if it is very windy it isn't a good night for observing anyway. It doesn't shake all by itself (tracking) and I am not hanging on the focus knob or eyepiece anyway.

#8 Wolfgang Grassm

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Posted 19 August 2012 - 02:48 AM

I have an LX90 12" myself, and yes, i have been out with the instrument last night.
The facts are: The mount is shaky, but without wind this is not so much a problem up to 200-300 Magnification.
It is a serious problem above 300x, because focusing becomes an 'adventure'.
So i would recommend some sort of windshield for it, yesterday is used my car for that purpose.
The advantage over the LX200 is the reduced weight.
With 27kg(app. 60 punds) it is at the limit of my (58 years) capabilities. :tonofbricks:
With a 12" LX200 i would be out observing much less :(, because it is much heavier.
I observed with an 14mm UWA Wildduck-Cluster and other milkyway objects with no problems.

#9 stanislas-jean

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Posted 19 August 2012 - 04:26 AM

This could be a litttle too hard.
I think for the 12" the magnification can raise substantially above if all is elctric controlled (focuser ZIS or something else). The lx90 was designed for people moving a lot so with reduced weight.
Under winds even greater mounts will shake a little at 500-600x in open air. We know observers making planetary photo with the 12" and 10m focal length.
Stanislas-Jean

#10 Hazel

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Posted 16 November 2012 - 05:17 PM

I too am thinking of the 12"LX90 like the original poster. I've read this thread and numerous reviews on line. I'm worried that I will spend $3100 and not be satisfied because of the mount (but spending over $4000 for the LX200 is a lot more money). I'm sure the optics will be great. So I'm really torn on this issue.
Question: Is the 12" LX90 considered by some to be "undermounted" because (1) the thickness/robustness of the fork mount, and/or is it because (2) the field tripod is too thin/light? I have to admit the fork arms look a little thinner than those on the LX200. I have read though that the field tripod for the LX90 is the same as the LX200 -- so that should be beefy and sturdy, right? (BTW, is the field tripod for the 12 inch larger than the 8 and 10 inch model tripods -- I hope?).
Finally, if I'm not interested in deep space astrophotography but really just observing and perhaps moon/planet imaging, should the LX90 perform well on nights with no wind? Looking forward to comments on this. Thank you!

#11 thesubwaypusher

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Posted 24 November 2012 - 11:47 PM

I too am thinking of the 12"LX90 like the original poster. I've read this thread and numerous reviews on line. I'm worried that I will spend $3100 and not be satisfied because of the mount (but spending over $4000 for the LX200 is a lot more money). I'm sure the optics will be great. So I'm really torn on this issue.
Question: Is the 12" LX90 considered by some to be "undermounted" because (1) the thickness/robustness of the fork mount, and/or is it because (2) the field tripod is too thin/light? I have to admit the fork arms look a little thinner than those on the LX200. I have read though that the field tripod for the LX90 is the same as the LX200 -- so that should be beefy and sturdy, right? (BTW, is the field tripod for the 12 inch larger than the 8 and 10 inch model tripods -- I hope?).
Finally, if I'm not interested in deep space astrophotography but really just observing and perhaps moon/planet imaging, should the LX90 perform well on nights with no wind? Looking forward to comments on this. Thank you!


Hi Hazel:

Avoid the 12" LX90 unless you live in a place where there is absolutely no wind, and you do not plan on touching the scope while using it. The 10" LX200 is MUCH better. You should consider the Celestron CPC Edge HD11" also.

The tripod for all of the LX90 models is the same, but the 12" LX200 starts to grow really big and heavy. I use the standard field tripod from the 10" LX200 for my 12" (you're not supposed to, but I have been doing it for years). That is the one that comes with the LX90 scopes.

The fork on the LX90 is cheap aluminum and too light and too long.

Good luck, Chris

#12 Jim W. Coleman

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Posted 04 March 2013 - 02:25 PM

I just put my 12" LX90 GPS up for sale today, but with a great sense of loss. It's been a fantastic telescope. I have had no problem with the mount or with vibrations, as some have noted above. But the telescope has been mounted in an observatory on a very solid pier, out of the wind and elements. But even when I've used it outside, I've had no problem. I think it's more in how you balance it, as I've found it's pretty finicky about being properly balanced. I'm upgrading to an LX600 in the observatory and an LX200 for field use, primarily due to mount issues. The mount I have now handles the telescope beautifully (it's on a wedge), but I want to add additional equipment to it and that would exceed the tolerances of the mount. But for the ones who have been asking about it, my experience has been positive and I've owned a lot of scopes through the years. My two cents.

#13 Starman27

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Posted 05 March 2013 - 09:44 AM

Just a reminder this isn't the S&S forum.






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