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Thread: Are counterweights included in the weight capacity of a mount

  1. #11
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    Quote Originally Posted by KeithBC View Post
    Yes, and that is a valid argument for more weight on a shorter arm.

    Which option is better is difficult for anyone but the engineers who designed it to know for sure. And since user manuals are bad enough about telling us what the pieces are and how to use them, it is probably too much to expect them to convey engineering decisions to buyers, even though it is obviously information that we need.

    I do find it interesting that the NEQ mounts have gone to a longer arm to achieve balance with bigger scopes.
    I'm usually happy if the manuals I get look like they've only been through google translate once instead of Mandarin-Cantonese-Klingon-French-English sequentially.

    I'm not really sure on the NEQ. I'm sure besides the technical aspect of it there's many other things that are taken into account, like the extra materials cost on an inexpensive mount to use heavier weights, extra cost to ship and the requirement for a heavier duty tripod. I would imagine any high-volume production mount that's competently engineered when fully loaded would be close to it's maximum in many different areas. It might be nice for upgrades if the structure and bearings are much beefier than they need to be and the motors/gearing is holding the mount back, but that's usually not the case. :P
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  2. #12
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    The NEQ6 only appeared with the arrival of the Skywatcher 300P - in fact initially in the UK the ONLY way to get an NEQ6 was to buy it with a 300P.

    I suspect it was more to do with Synta not wanting to ship a box with an additional pack of counterweights and hence keeping their shipment charges down than any sound mechanical reason.

    How well the 300P ever balanced on the NEQ6 with just the two supplied 5kg counterweights is anyones guess. You'd have to own one to find out I suppose.

    I know from owning a 250P that it wont balance on an EQ6 no matter how far the weights are away - you have to put an additional 5kg weight from the start. Even the more humble 200 by the time its dressed with a few extras tips the scales over and needs an additional weight.

    I cant argue about the relative merits of having longer arms versus weight close in to the fulcrum. Isaac Newton could get it right but I was a always a dud at Physics.
    I have seen arguments on both sides of the fence but I have to admit to me the idea of more weight closer to the movement seems to make more sense.

    I think something all us brilliant folk forget though is the vast majority of this kit gets shipped to people who are pretty clueless - it then gets sold on ebay when people realise it doesnt show you a view like Hubble and Brian Cox or Carl Sagan dont leap out the box and give you a personalised tour of the Universe. Consequently if the major part of your market wont ever balance the scope from the off (and probably wont get much past a quick look at the moon) then the manufacturer can pretty much just get on with shifting tin and let the cogneseceti argue it and, on the way, help the newbies. I mean why bother having any support or decent manuals when you can rely on the users with experience to do the work for you free of charge.

    Just as Microsofts slogan could justifiably be 'Microsoft - we never forget that your time costs us nothing' the mass produced scope manufacturers (and even the specialist ones come to that) could have a slogan that says 'Telescopes - over 10,000 free support specialists worldwide - no charge'
    Thirty spokes meet at the nave, because of the hole we may use the wheel.
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  3. The Following User Says Thank You to Astro-Baby For This Useful Post:

    KathyNS (07-28-2011)

  4. #13
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    Quote Originally Posted by Astro-Baby View Post
    if the major part of your market wont ever balance the scope from the off (and probably wont get much past a quick look at the moon) then the manufacturer can pretty much just get on with shifting tin and let the cogneseceti argue it and, on the way, help the newbies. I mean why bother having any support or decent manuals when you can rely on the users with experience to do the work for you free of charge.
    Ain't that the truth!

    Which reminds me that I have never thanked you for your instructions on polar-aligning an HEQ5. I never would have figured it out without your help. It certainly can't be done using the manual! So, thanks!

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    I've had a look at the bearings on my lx90 and was very pleased that they appear to be 3 dot bearings and quite substantial (at least as substantial as the surrounding aluminium housing!).
    I don't think upgrading them could be that beneficial - it would be better to box in the girder section of the yoke webs and stiffen it up that way as it is horrendously wobbly when canted over 62 degrees! Looking at the Eastern or Western horizon involves waiting some time for the rig to settle from it's tuning fork imitation..
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  6. #15
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    Keith - is no problemo really. I wrote them don so I wouldnt forget to be honest.

    Someone else had to bash the know how into me. Its a weird old thing really - everyone has trouble with it but after you get it worked out you wonder why it ever seemed hard. Its very strange.
    Thirty spokes meet at the nave, because of the hole we may use the wheel.
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    Thus tools come from what exists, but use from what does not.

  7. #16
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    LOL! The old saying is true: Anything is easy once you know how.

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    Celestron defines the payload of its mounts to be the load that is carried by the mount's dovetail clamp. The counter weight is not part of the payload:

    Does the stated payload weight of my Celestron mount include the counterweights?

    Here are the payloads for various Celestron mounts:

    What are the payload weights of Celestron mounts?
    SXINIAS

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    Sxinias,

    That is exactly what Orion told me when I called about adding a second counterweight to my Sirius mount. They stated that their mounts are rated to carry xx amount of weight on the dovetail not including any counterweights needed to balance.

    Allan

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    Default Re: Are counterweights included in the weight capacity of a mount

    I realize this a almost a decade old thread, but I imagine it is read very often. I know I have read it many times trying to understand what I can put on my AVX mount. I found this FAQ answer on celestron’s website quite helpful:

    https://www.celestron.com/blogs/know...oad-capacities
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    Default Re: Are counterweights included in the weight capacity of a mount

    Most mounts are capacity without counterweights, normally will be stated somewhere if different.
    Just remember that most manufactures are not that conservative in their capacity estimates and advertise numbers on the high side.
    Subtracting 5lbs would not be out of line to keep from overloading a mount.
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