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Thread: Zhumell Z12 weight and dimensions

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    Default Zhumell Z12 weight and dimensions



    Anyone know the weight of the rocker box? How about the dimensions, height and width. I'm afraid I probably know the answer to this but I'd like to see if I could lift it and fit it in my Honda Fit. I'm using a 90mm APO now and get teased mercilessly. That I can handle; I'd just like more aperture and I'm thinking 12" is my limit as a "woman of a certain age" who's on a budget.
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    Default Re: Zhumell Z12 weight and dimensions

    Base Height: 27.5"
    Base Diameter: 24.88"
    Base Weight: 38.3 lbs

    Not sure that would fit in a Fit
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    Default Re: Zhumell Z12 weight and dimensions

    I'm a big guy and the Z12 is more than I want to handle. It fits barely in my Chevy Cruze taking up 3 seats. So I cut a piece out of the tube and converted it to a collapsible truss model. Now it fits in the back seat, occupies 75% of it. To save yourself the aggravation how about the Skywatcher 12" collapsible (a regular truss is much harder to use and set up). I doubt though if the Skywatcher accessories can stand up against Zhumell. Maybe get a Z10, affordable and very good and those 2"es less won't kill you.
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    Clear skies, Henk. Telescopes: Carbon fiber ES ED127CF, Zhumell Z12, Coulter Odyssey 10, AT6RC, Venture RX-7, Celestron Skymaster 20x80, Mounts and tripod: AVX, LXD55, Tiltall, Cameras: Canon (SX40, 450D, 350D, ELPH 100HS), Samsung NX100, DIY: Dob and camera barndoor trackers, afocal adapter, foldable Dob base with leveling feet, Az/Alt setting circles, Accessories: Counterweight bar attachment, Plossls, Barlows, Telrad, SSAG, laser collimators (Seben LK1, Z12, Howie Glatter), Cheshire, 2 Orion RACIs 8x50, Software: DSS, ImageMagick, PHD, Nebulosity, Photo Gallery, Gimp, CHDK

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    Default Re: Zhumell Z12 weight and dimensions

    Quote Originally Posted by TinRinnie View Post
    I'm using a 90mm APO now and get teased mercilessly.
    They are just jealous because your using the better scope
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    Default Re: Zhumell Z12 weight and dimensions

    Quote Originally Posted by Gabby76 View Post
    They are just jealous because your using the better scope
    I'd rather sit and look through a Dob eyepiece than try to look at something at zenith through a refractor. Unless, of course, your mount extends to the sky and you don't need to lean over.
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    Default Re: Zhumell Z12 weight and dimensions

    Gabby is correct - there are many who will beat the aperture drum mercilessly. While there is nothing wrong with more aperture, if its more than you can and/or want to handle, then you need to go with what feels right for you. If one buys too much scope and its a constant struggle to set it up, take it down and move, then it becomes very easy to come up with excuses not to take it out any given night. When that happens it collects dust and you start questioning why you wasted the money on something that sits unused.

    I am 63 yrs old, 6ft tall and of generally good health. That said, I have an Apertura AD12, which is basically the same as the Z12. I can certainly carry it around from our garage to the backyard (two trips), but its not lightweight by any means. I have also put it in and out of the back of our mini-van for the times when I take it to the dark site. Its a struggle, but I manage. I also have a Z10 that I've owned for quite a while. There is most definitely a noticeable difference in bulk and weight when comparing the two.

    As Henk stated, the two inch difference is not a deal breaker for most people. If one tends toward observing the brighter objects, then two inches only results in a little more light capture and resolution and in many cases the differences aren't noticed visually. However for someone, like myself, who often uses their scopes at the dimmer fringes of their capability, the two inches does make a noticeable difference. What is barely seen with 10 inches is more easily seen with 12. What is just out of reach with 10 inches then becomes visible with the 12 inch.

    So do an honest self-assessment of what you want to observe and what you can physically handle. That last thing you want to happen is that you injure yourself or damage your equipment because it is simply more than you can handle comfortably. If you like your current scope and it is satisfying your observing needs and desires, then I would say you are fine right where you are. In the end, only you can make that decision, and don't let someone else talk you into something that you don't feel comfortable with because they think you need more aperture. But if you really feel the need to feed aperture fever, and have limitations in physical capability and budget, then perhaps something like the Z8 is more appropriate. That would be a significant boost in light gathering and keep the size and bulk more manageable. One thing to remember is that when you double aperture you also double the resolution and quadruple light gathering capability.

    The following dimensions are for an Apertura AD8 (basically same as the Z8) for your consideration:

    OTA: length = 46.23 inches; weight=24.5 lbs
    Base: height=27.38 inches; width=19.25 inches; weight = 27.7 lbs
    Total height=51.75 inches; total weight = 52.2 lbs

    To see the size differences between a typical 8, 10 and 12 inch dob see the below promotional video from Apertura. Unfortunately that brand is now defunct, but they were made by GSO in Taiwan, which also makes Zhumell and thus they are bascially one in the same. Hope some of this helps.

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    Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
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    Default Re: Zhumell Z12 weight and dimensions

    Quote Originally Posted by Skybird View Post
    I'd rather sit and look through a Dob eyepiece than try to look at something at zenith through a refractor. Unless, of course, your mount extends to the sky and you don't need to lean over.
    Adjustable height observing chairs are good...
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    Default Re: Zhumell Z12 weight and dimensions

    Quote Originally Posted by Gabby76 View Post
    They are just jealous because your using the better scope
    I do a lot of my observing with my 4" APO. Sometimes in tandem with my 12" dob- but I usually end up with the APO simply because of the purity of the view compared to any reflector. Obviously the 12" is much brighter and can go a lot fainter then a 4", but quite a few objects benefit from either a "deep sky" filter or the simply purer view that an APO gives. In particular looking at planets, the moon, double stars and emission nebulae (with the filter) through the 4" gives a 12" a run for its money. Sue French who writes for Sky and Telescope has done a huge number of articles about what she can see in a small scope, and her book "Deep Sky Wonders" is well worth a read.

    If I am at a camp or a night with others from the astro club and I can only bring one scope, the 4" usually gets the nod, and I check out the big scopes periodically, but return to the 4" on almost every object (except faint galaxies).

    I agree with KT4HX's wise words about doing the self-assessment bit. What do you realy want to observe, and what can you realistically and willingly handle? The best scope is the the easiest to use, and therefore the one you use the most. All telescopes have limitations as to what they can observe. If you really want to go for the faint fuzzies, then by all means go for as big an aperture as you can handle, but don't do it just because others are stirring you (or are jealous!!)!

    If you want to go for a 10" or 12", then seriously consider the collapsible or truss versions. They take a little bit longer to set up (5-10 minutes vs 2!) , but are so much easier to lug around. My 12" (see below) is actually smaller to put in the car than my 4" refractor because I have made it as small (and light) as possible with a truss that is effectively one-piece, and no tools required or loose bits to fall on the ground in the dark.

    All the best,

    Dean

    members/deand-albums-dean-s-12-dob-picture86700-img-4745.jpg members/deand-albums-dean-s-12-dob-picture86699-img-4744.jpg members/deand-albums-dean-s-12-dob-picture86698-img-4743.jpg members/deand-albums-dean-s-12-dob-picture86697-img-4741.jpg
    Last edited by DeanD; 05-20-2017 at 04:26 AM.

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    Default Re: Zhumell Z12 weight and dimensions

    Sometimes you need the extra aperture because the sky permits 0.5 arc second seeing or better. I love the optics on my Z12 but only want to take it out when the seeing is 1.0 arc second or better. If pressed for time and over tired I'll bail and use one of my 6" scopes or a refractor.

    I'm trying to think of a way to make the optics from my Z12 easier to use. One idea is to get mechanics for a 12" f5 scope in a truss tube.

    Mechanics like this would be ok
    Teleskop-Express: Sumerian Optics Alkaid 12" f/5 Dobson-Teleskop

    At under 37 pounds that would help a bit. Looks like I'd have to buy another optic set. Well I can test to choose and ship the loser out for premium refiguring.

    Or could do the same with this Teleskop-Express: Explore Scientific Ultra Light Dobson Teleskop - ffnung 305mm - Brennweite 1525mm

    Except it seems to be rather heavier.

    There are folks out there who remodel Dobs too.
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    Default Re: Zhumell Z12 weight and dimensions

    Quote Originally Posted by DeanD View Post
    If you want to go for a 10" or 12", then seriously consider the collapsible or truss versions. They take a little bit longer to set up (5-10 minutes vs 2!) , but are so much easier to lug around. My 12" (see below) is actually smaller to put in the car than my 4" refractor because I have made it as small (and light) as possible with a truss that is effectively one-piece, and no tools required or loose bits to fall on the ground in the dark.
    What resources did you use to design your 12"'s mechanics?
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    Scopes: Ref: Baader Vario 60f4, Orion 70f4, Orion ST80f5, SV ED80Af7; Newt: AT200f4, OC200f6.3, Z12 300f5; Cat: VMC110L 110f9.4, Intes MK66 150f12, ES MN152f4.8.

 

 
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