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General Astronomy >> General Observing and Astronomy

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starman50
newbie


Reged: 05/12/09

Stabilizing tripod
      #5603769 - 01/03/13 09:58 PM

I have a way of stabilizing tripods.

Buy a screw in anchor and place under tripod. A rachet strap connected between bottom of tripod and anchor tightened to your desire.


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Raginar
Post Laureate
*****

Reged: 10/19/10

Loc: Rapid CIty, SD
Re: Stabilizing tripod new [Re: starman50]
      #5604235 - 01/04/13 08:33 AM

That's pretty creative. I never thought to do that Welcome to the site!

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StarStuff1
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Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Stabilizing tripod new [Re: Raginar]
      #5604680 - 01/04/13 12:23 PM Attachment (54 downloads)

Hanging a weight under the tripod works well, too. A gallon jug of water or...

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Tony Flanders
Postmaster
*****

Reged: 05/18/06

Loc: Cambridge, MA, USA
Re: Stabilizing tripod new [Re: starman50]
      #5604719 - 01/04/13 12:45 PM

Quote:

Buy a screw in anchor and place under tripod. A rachet strap connected between bottom of tripod and anchor tightened to your desire.




What surface are you observing on? I don't know many that would take a screw well even once, let alone repeated placements.


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panhardModerator
It's All Good
*****

Reged: 01/20/08

Loc: Markham Ontario Canada
Re: Stabilizing tripod new [Re: Tony Flanders]
      #5604744 - 01/04/13 01:00 PM

Tony I would hazard a guess that he means one of those things that you screw into the ground to limit a dog's range via a rope or long leash.

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David Castillo
Carpal Tunnel
*****

Reged: 09/09/06

Loc: Carmel Valley, Ca
Re: Stabilizing tripod new [Re: panhard]
      #5604898 - 01/04/13 02:18 PM

My vote is with Terry's method. I've used a water jug on a rope suspended from the tripod's center eyepiece tray...works fine.
-----
Dave


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CharlesW
scholastic sledgehammer


Reged: 11/02/12

Loc: Chula Vista & Indio, CA
Re: Stabilizing tripod new [Re: David Castillo]
      #5609228 - 01/06/13 09:05 PM

I just watched a guy on YouTube suggest that you gently pull the feet out a little to tension the legs.

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Raginar
Post Laureate
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Reged: 10/19/10

Loc: Rapid CIty, SD
Re: Stabilizing tripod new [Re: CharlesW]
      #5611184 - 01/07/13 11:50 PM

I think it's a great idea if I hadn't built my ROR. Not only would it anchor your scope down in high winds (an issue in SD) but it provides some extra tension on the rig to include providing you with a common reference spot in your yard for observing.

For a multitude of materials you could either anchor into it via a hammer drill and some concrete anchors or remove a section of the deck and just have the strap anchored down to the ground from there with your 'tension' source such as a come-along on the deck-side.

Fantastic share Terry!


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StarStuff1
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Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Stabilizing tripod new [Re: Raginar]
      #5612533 - 01/08/13 07:01 PM

Thanks, Chris!

One more minor tip would be to have some small part of the "weight" actully touching the ground if it is windy. Then the swinging weight could add some additional oscillations to the eyepiece view.

starman50's suggestion certainly has merit when the observing ground allows the screw-in anchor method.

Also, welcome to the Forums starman!


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Mike E.
Carpal Tunnel


Reged: 01/26/10

Loc: Moonstone Observatory
Re: Stabilizing tripod new [Re: starman50]
      #5616123 - 01/10/13 07:34 PM

Quote:

I have a way of stabilizing tripods.

Buy a screw in anchor and place under tripod. A rachet strap connected between bottom of tripod and anchor tightened to your desire.




Attaching to an eyelet in a five gallon bucket filled with concrete would be an easier option; depending on the size of scope of course.


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BigC
Carpal Tunnel
*****

Reged: 09/29/10

Loc: SE Indiana
Re: Stabilizing tripod new [Re: Mike E.]
      #5616328 - 01/10/13 09:44 PM

I thought of that but hadn't yet actually done it;was thinking of bungee cord(tarp strap) as used here in rural area.The ratchet strap would be more secure though. And some light chain with a small turnbuckle could really pull down.

Then again,somewhere I recently read advice that center weight is exactly the wrong thing ,that weight should be on the bottom of the tripod legs.

Has this ever been analyzed by an engineer ?

I do know the tripod with ridgid center spreaders plates are way more stable than those with the thin floppy (easily bent) leg hinges.


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StarStuff1
Post Laureate
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Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Stabilizing tripod new [Re: BigC]
      #5618237 - 01/11/13 11:48 PM

Take a look again at my pic posted on 1/4 here. Talk about stable, this puppy locks the legs together with a glued/screwed together tripod tray. Very solid!

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BigC
Carpal Tunnel
*****

Reged: 09/29/10

Loc: SE Indiana
Re: Stabilizing tripod new [Re: Mike E.]
      #5620109 - 01/13/13 01:46 AM

Quote:

Quote:

I have a way of stabilizing tripods.

Buy a screw in anchor and place under tripod. A rachet strap connected between bottom of tripod and anchor tightened to your desire.




Attaching to an eyelet in a five gallon bucket filled with concrete would be an easier option; depending on the size of scope of course.



Not if you have to move that bucket!
And I sure wouldn't want to lift the bucket to hang on my mount..


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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: Stabilizing tripod new [Re: starman50]
      #6148791 - 10/20/13 05:58 PM

Welcome aboard! Being a handy man is helpful for this hobby.

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berobertsmd
super member


Reged: 09/28/09

Loc: Brandon, Mississippi
Re: Stabilizing tripod new [Re: GeneT]
      #6149294 - 10/21/13 05:19 AM

Tying to the ground with a screw in anchor is a great way to stabilize and can also be handy to protect equipment from damage, ie: at a public event or a stargaze, someone bumping into and accidently overturning or even trying to quickly snatch unattended equipment.

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berobertsmd
super member


Reged: 09/28/09

Loc: Brandon, Mississippi
Re: Stabilizing tripod new [Re: berobertsmd]
      #6149299 - 10/21/13 05:32 AM

One method I've seen used with the screw anchor is to screw-in most of the way, secure your tripod with paracord, or rope, strap, bungee, or whatever you prefer, then can finalize tension by twisting anchor slightly.

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Jon Isaacs
Postmaster
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Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: Stabilizing tripod new [Re: BigC]
      #6149303 - 10/21/13 05:47 AM

Quote:


Then again,somewhere I recently read advice that center weight is exactly the wrong thing ,that weight should be on the bottom of the tripod legs.

Has this ever been analyzed by an engineer ?




I have never done an analysis but my gut feeling is that you want the load on the tripod itself, you are basically loading it, putting all the connections and joints into compression, taking the play out of the connections, making it less sensitive small perturbations.

My solution is to just use a tripod that is appropriate for the job, that way I can move it as needed. Generally the problems are in the legs, legs made from 2x2s, 2x3s are amazingly stiff.

Jon

Jon


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berobertsmd
super member


Reged: 09/28/09

Loc: Brandon, Mississippi
Re: Stabilizing tripod new [Re: Jon Isaacs]
      #6149338 - 10/21/13 07:03 AM

My only experience is with Celestron CPC and NexStar tripods. Using a screw in the ground anchor (similar to a anchor for a tent or pet leash) secured to the center of tripod spreader/eyepiece holder, under tension, did seem to put a load on the tripods, adding stabilization from vibration, especially with the NexStar tripod.

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MrJones
Pooh-Bah
****

Reged: 09/15/10

Loc: Indiana
Re: Stabilizing tripod new [Re: starman50]
      #6149816 - 10/21/13 12:31 PM

Quote:

I have a way of stabilizing tripods.

Buy a screw in anchor and place under tripod. A rachet strap connected between bottom of tripod and anchor tightened to your desire.




Hey just saw this. I have tried a tent stake and a bungee cord when observing from the lawn. It does look promising so far. I'm thinking this can also keep the setup from moving when people (i.e. me) bump it.


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schang
sage


Reged: 04/24/13

Loc: columbia, sc
Re: Stabilizing tripod new [Re: BigC]
      #6150539 - 10/21/13 08:24 PM

Quote:

Then again,somewhere I recently read advice that center weight is exactly the wrong thing ,that weight should be on the bottom of the tripod legs.

Has this ever been analyzed by an engineer ?

I do know the tripod with ridgid center spreaders plates are way more stable than those with the thin floppy (easily bent) leg hinges.




A center load would put all three legs (including joints/connections) in compression and stabilize it. I used a 5 lbs gym weight on a light weight tripod, it does stabilize the tripod with my C90 Mak.

Edited by schang (10/21/13 08:41 PM)


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