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Thread: Lx-70 new mount :)

  1. #21
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    Default Re: Lx-70 new mount :)



    depending on the size of the counterweight shaft you may be able to substitute smaller weights from Skywatcher, Celestron or Orion.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
    Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2" Orion Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

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    Default Re: Lx-70 new mount :)

    I think HS made a mistake and sent me two weights. The ad just shows one.
    My
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    Default Re: Lx-70 new mount :)

    Quote Originally Posted by Wire View Post
    I think HS made a mistake and sent me two weights. The ad just shows one.
    yeah I contacted them. They did, and you benefited from there mistake.

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    Default Re: Lx-70 new mount :)

    Newbie question: Stated/listed weight limits for tripods & mounts; does that include the balance weights or is it the OTA and eye pieces? Do higher weights affect mount bearing movement or is the weight limit more for the tripod?

    I have this drive to mount an ES 8" Dobsonian reflector to some kind of tripod with an EQ or GEM mount. The OTA is listed as 25lbs. Clearly this exceeds max weight for the LX70 but is that for the EQ mount or the tripod? I've seen some really beefy tripod assemblies for beefy prices. I was 'hoping' to adapt an EQ or GEM mount to a stronger tripod but if the mount won't work as intended with the OTA weight I'll need to look in a different direction.

    Thanks for all the information!

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    Default Re: Lx-70 new mount :)

    A tripod will normally support more than the mount and is only there to stabilize the mount.
    The LX-70 is a EQ-4 class mount and will struggle with a 200mm newtonian on it, most EQ-5 mounts have a bit of a hard time with them.
    The load capacity is for the mount without counterweights, so a telescope and accessories. Remember though that most companies inflate the load capacity a bit.

    A 200mm newtonian will shake quite a bit in a breeze on this sized mount as well as put considerable stress on the worm and bushings.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
    Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2" Orion Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

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    Default Re: Lx-70 new mount :)

    I think, I'll just make some easy improvements to the Dob stand and enjoy it for what it is versus hanging it on a tripod. I hope an LX70 will be sufficient for a 152mm x 731mm 16lb carbon fiber OTA.

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    Default Re: Lx-70 new mount :)

    What telescope is the carbon fiber?
    More than just weight of telescope needs to be taken into account, moment arm (inertia) is a big factor as well as actually being able to properly balance the tube.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
    Mounts: Celestron SLT w/ pier mod & EQ-3 tripod, Celestron hypertuned CG-5 w/ tracking motor & Argo Navis, Manfrotto 028B w/ Stellarvue M2C, Manfrotto 055PRO w/ 128RC, TAL-1 HD EQ, Vixen SXP w/ HAL-130 SXG & half pier
    Diagonals: 2" Astro-Physics MaxBright, 2" Zeiss/ Baader prism, 2" Baader Herschel Wedge (Photo Version), 2" Orion Amici prism, 2" Stellarvue Dielectric, 2" TeleVue Everbrite
    Eyepieces: A-Z

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind. - Jon Isaacs (CN)

  9. The Following User Says Thank You to Gabby76 For This Useful Post:

    HankBarton (08-18-2019)

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    Default Re: Lx-70 new mount :)

    Thank you!

    Friday afternoon we received the SE 152mm x 731mm David Levy edition MN Comet Catcher. Beautiful telescope. Immaculate CF! Nice focus assembly. After mounting it on the tripod we spent about 5 minutes checking and dialing in the collimation with a cheshire eye piece. Seemed easy enough, so far.

    Getting the LX70 assembled and set up was pretty exciting. It seems to balance the tube easily; very little vibration using the slo-mo knobs. Rock solid at the extremes. What an amazing piece of equipment. We are anxious to get it all outside.

    Fooling around today, we were looking at the bolts attaching struts on a power line tower about one mile away. 40mm, 32mm, 25mm, 9.7mm and the 2x barlow. Even sighted in a cheap red dot view finder.

    The LX70 brochure and assembly pamphlet/instructions support using a large diameter-long length reflector tube. But I'm not smart enough at this point to understand or recognize some of these equipment limitations so PLEASE PLEASE point them out so we can hopefully avoid damaging the mount or tube.

 

 
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