Author Topic: Z12 zhummel vs Meade 12 lightbridge  (Read 74 times)

Yung Pryor

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Z12 zhummel vs Meade 12 lightbridge
« on: January 04, 2018, 12:48:03 PM »
I would love to hear some opinions on comparing the two. I currently have a starblasy 4.5 and Im looking to upgrade. Everything i read says that a 12 inchb scope is the smallest of the big scopes so for now im looking at getting a 12inch. Eventually will be looking into an 8 in for grab and go. Is the portability of the truss deaign worth it or if my main viewing is about 5 feet from where the scope is storred should i go with the solid tube z12. Does the truss design hurt if there is random lights from neigbors and stuff. Does the light shard completely seal the meade or do I need to worry about pollen and dust on the mirror? Any information helps. Sorry if this thread is out there but i couldnt find any comparing the two.



trodnenwisen

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #1 on: January 10, 2018, 06:23:43 AM »
for me, I'm 61 years old and when I bought the Meade I felt that as I get older, it will be easier to just take it apart when I haul it around then put it back together (literally 5 minutes if you take your time) than a solid tube. so I bought the truss looking ahead to those days when my back won't be what it is now (and what it is now isn't what it used to be either). I also went with the 12" rather than a 14" or 16" for the same reason - easier to deal with when I'm 65, 70, etc.

that said, I can tell you a shroud should be a part of your kit if you go truss tube and observe where there are neighbors and/or streetlights. not sure how much it helps with keeping the primary clean but I clean my 8" (solid tube) and my 12" mirrors at about the same frequency - 2, 3 times a year. primaries get dirty and with modern optics (overcoated mirrors), there's no reason not to give them a bath when they need it. just follow the procedure, have some new center dots to replace the ones that float off when they are in the sink soaking (mark the center of the dot with a magic marker before it goes in the sink) and you are good to go.

Jeremy Fokused

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #2 on: January 10, 2018, 09:12:19 AM »
Hi - I own a Z12 and a LB16, and while not directly comparable to the LB12, here are the differences I have noted while using both at home and after transport to another site:

Solid tube seems to hold collimation better, whether transported or not
Truss design is an advantage for transport (component weight and size); I added carry straps to the Z12
Solid tube optics stay cleaner in storage
Truss tube optics may cool faster with less tube currents; both types have cooling fans
Solid tube Z12 has better altitude bearing friction adjustment
Solid tube Z12 extends further for shading the secondary from stray light
Truss design seems less sensitive to heavy eyepiece changes (bearings have more friction?)
Truss shroud can be fussy to deploy and stay in place
Solid tube attracts lots more dew (it's a big steel tube after all)
Optical quality is about the same (GSO)
Both types are easily modded and have third party products support

If I had to choose one for easy roll out at home, it would be the Z12, which is exactly what I do now.

Ken Kamkoff

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #3 on: January 12, 2018, 12:05:31 AM »
My take:

If transporting the scope is not an issue, then I prefer a solid tube over a truss tube.  Solid tube Scopes are better thermally, in particular because they are better at protecting the optical path from the observer's body heat. A shroud only does so much in this regard.

The Scopes are both manufactured by Guan Sheng Optical in Taiwan so optically they should be essentially the same.

If one is traveling by car, a 10 inch or a truss is a better way to go but for a few feet out the back door, the scope would likely remain assembled and I would go with a tube scope unless I thought I might want to take it somewhere..

It's worth seeing these scopes in person.. Whenever I see the 12 inch F/5 Tube Dobs, it always surprises me how much bigger they are than the 10 inch F/5.. And I am no stranger to larger Scopes..

Jon

unamprodce

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #4 on: January 12, 2018, 09:20:29 AM »
I own both (sort of). I own a Z12 and it's my main scope. The Z12 is my grab-and-go. I own a hybrid Z12 / Lightbridge that I built. The scope uses the Zhumell adjustable altitude bearings. The solid tube holds collimation better and is more easily stored and moved because it's one piece. The Lightbridge is nice and takes up less space when stored but I just never use it. If you buy a Lightbridge, you MUST buy a shroud. (This is to keep out stray light and inquiring fingers if you ever do outreach.)

I've included a photo of the hybrid scope during its build. It uses a new, shorter, collapsible planisphere base made of Baltic Birch ply.Attached Thumbnails


John Robertson

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #5 on: January 13, 2018, 11:23:38 PM »
Thank you all so much!! I might travel two or three times a year and im thinking i will get an 8inch for local travel if i feel like it. For now going with the Z12. I feel it fits what i want in a scope right now. Thanks for the input. Will update when i get it in about two weeks.

contpeeresto

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #6 on: January 18, 2018, 02:57:57 AM »
Looking forward to your report. The Z-12 is about as big a scope as I'd personally want to deal with, and I'm not sure I'd even put up with that, preferring smaller scopes, generally. I am sure, however, that the step up you're going is huge. You're gonna optically blow your socks off! Enjoy! I love my Z-8, btw. One fantastic little big scope, for sure.

galpaydabta

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #7 on: January 21, 2018, 03:54:56 AM »
galaxies, galaxies, galaxies! that's what 12 inches is for!

indepmontla

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #8 on: January 23, 2018, 12:57:09 AM »
Well now things have changed a little. An orion skyquest xx14g truss came available on craigslist. Looks like in new condition. Im going to look at it this weekend. Anyone have any experience with these scopes

frenafverbi

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #9 on: January 29, 2018, 10:08:42 PM »
Only 1500 with shroud gps unit dc adapter 3 eyepieces a dolley carrying cases and a cover for the whole.scope in storage.

Mike Meckler

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #10 on: January 30, 2018, 09:07:47 AM »
I dont have either scope, and im a beginner, but I feel that I did A LOT of research, and asked alot of questions about both of these scopes.
I heard from multiple people, about multiple issues with the Lightbridge. The mount is supposedly pretty poor quality, and others did not like the disassembly of the scope, and some felt that putting the secondary mirror on was more of a two person job. I also heard questionable comments about Meades customer service. A CN user recently posted about issues with his new Lightbridge in the Reflector forum. Probably a page or two back.

The Z12 had alot more positives, and didnt seem to need as many mods as the lightbridge really needed. I think alot of people felt from my research, that this scope was too big and that a 12 inch solid tub is going to cause you problems, and ultimately use it less. Probably not a issue if your always keeping it somewhere easily accessible to where you observe. CN member Halx posted a picture of transporting his Z12, and that REALLY put into prespective the size of the scope. People arent joking, that this is the size of a water heater.

Another scope I was recommended was the Explore Scientific dobs. I liked the ultra light design, but saw a youtube video, of someone receiving the scope, with metal shavings on the primary mirror, and rust in the mirror box upon arrival. Seemed to me like poor craftsmanship, and I did not like the idea, of finding metal shavings in the scope upon arrival.

I ultimately looked at Skywatcher collapsible dobs, which to me, overall seemed to have a better opinion over the Lightbridge. I didnt like the comments people made about disassembling the Lightbridge, and that you'd need to number each bar with where it attaches, and it didnt seem easy assembling the secondary mirror, single handed.

I would really consider looking and reviewing this scope. At first, the half collapsible\ solid tube seemed silly, and I didnt really see the point. After hearing about the hassle of assembling, and disassembling some of the other truss scopes, and issues with these scopes, I realized the Skywatcher design seems alot more user friendly. Photos of the disassembled scope in the back seat of a sedan really satisfied me, about the feasibility of transporting the scope. The only issues I could really find about this scope, was that the focuser was only single speed, and there was no included fan, but does included a space to put one. This is the scope I will definitely be purchasing soon.

I know I dont have either of the scopes, and am a beginner, but I have spent hours and hours reviewing these scopes, and have asked multiple questions about these scopes. Lots and lots of posts about these two scopes too. I suggest searching Lightbridge vs Z12(or Skywatcher) Figured id chime in and give my two

Here are some of the posts I made, about these scopes that received alot of feed back and, that really influenced my purchasing.

https://www.cloudyni...lightbridge-12/

https://www.cloudyni...e/#entry7785285

brigtigeartgib

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #11 on: January 30, 2018, 11:15:13 AM »
Thank you very much for your input. It seems like the orion skyquest 14in truss is going to work out. Im going to look at it sunday!

Myron Apostolics

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Re: Z12 zhummel vs Meade 12 lightbridge
« Reply #12 on: February 02, 2018, 03:20:18 PM »
Quote
Only 1500 with shroud gps unit dc adapter 3 eyepieces a dolley carrying cases and a cover for the whole.scope in storage.

Price sounds good for the package. Hope it works out well for you.