Meade 7" LX200GPS... is it a good scope?

15 years 6 months ago #5960 by Liam
I am curious .. . does anyone have an opinion on the Meade 7" LX200GPS Mak-Cass Scope. Anyone here ever used one? My research suggests that the optical quality... especially contrast is better that the 8"LX200 GPS SCT. I would really like to be able to compare both scopes.

I know the 7" is more expensive that the 8" (around the price of a 10" LX200GPS SCT)


Opinions welcome.

Liam

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15 years 6 months ago #5964 by michaeloconnell
Replied by michaeloconnell on topic Re: Meade 7" LX200GPS... is it a good scope?
Apparently it's very good.
Whether it's worth the price is another question. Depends on whether you want to have it portable or not. The 10" would be a good bit bigger and bulkier although would have better light grasp. Not sure what the weight difference is. Only concern I'd have is the focal ratio which is around f/15ish. You've have a fiarly narrow field of view. This would be great for planets but a little bit tight for DSOs. I find that even my 8" f/10 is a little tight. For DSOs I usually use the focal reducer for bring it fown to f/6.3.
Clear skies,

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15 years 6 months ago #5965 by Liam
Thanks for the reply and Information...


Would a focal reducer be an option with the 7"?

What about tihe Mak Cas optics. I understand the format. Is it superior to SCT? I know light gathering is better due to smaller secondary mirror
Liam

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15 years 6 months ago #5967 by michaeloconnell
Replied by michaeloconnell on topic Re: Meade 7" LX200GPS... is it a good scope?
I reckon you would need one alright. My understand it that the standard LX focal reducer will fit it.

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15 years 6 months ago #5968 by Liam
Excellent (as Mr. Burns would say)


One last question.... Is the MCT optical system superior to SCT?


Liam

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15 years 6 months ago #5970 by stepryan

I am curious .. . does anyone have an opinion on the Meade 7" LX200GPS Mak-Cass Scope. Anyone here ever used one? My research suggests that the oprical quality... especially contrast is better that the 8"LX200 GPS SCT. I would really like to be able to compare both scopes.

I know the 7" is more expensive that the 8" (around the price of a 10" LX200GPS SCT)


Opinions welcome.

Liam


liam,
i cannot comment on the mak but it is supposed to be better than the sct. having said that i own the lx200gps that i recently got and from at least the one i have i can say it is a very good scope. it is not too heavy either. the mount is also pretty solid even at full height. all in all i am very pleased with it. pity about the weather though :(, haven't got much use of it.
stephen.

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15 years 6 months ago #5971 by dave_lillis
Replied by dave_lillis on topic Re: Meade 7" LX200GPS... is it a good scope?
Liam,
It apparently has better contrast then most SCT scopes because it has a smaller secondary obstruction.
This is also why it is considered optically good.
One point to note is that the relatively thick meniscus lens makes cooling times stretch somewhat, to the point that meade supply a fan to help it cool down.
As Michael said, its an F/15, so fields of view wont be as wide since you'd be getting relatively high magnification compared to an SCT of equivilant size.

Since the secondary mirror is an aluminized disk on the meniscus lens (equivilant to the corrector plate in a SCT), there is no collimation required, although you can if you want but it is very hard and dangerous in that you can completely loose it and only alot of skill or a factory re-allignment can bring it back.

I had a look into this a while back, here are a number of interesting articles, some of which ran comparisons.

Look at rhe 8" SCT versus the 7" MAK
www.mapug.com/AstroDesigns/MAPUG/TipsNewX.htm#makvs8
BTW, mapug.com is a goldmine for all meade scopes, its my bible. :wink:

Questar Mak vs Meade Mak
www.cloudynights.com/reviews/questar7s.htm

Nextstar11 versus the 7" Mak
www.cloudynights.com/lab/telescopes/shootout.pdf

and the 9.25" versus the 7" mak with some very interesting details regarding the 9.25 SCT !!
www.cloudynights.com/lab/telescopes/planetary.pdf

www.cloudynights.com/reviews/meademak.htm
www.scopereviews.com/page1e.html

Have fun.!

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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15 years 6 months ago #5988 by Liam
Replied by Liam on topic Thanks
Thanks Dave,


Great sources of information there.

Liam

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