Quote:
Originally Posted by h0ughy
you want to hope it doesn't rip your guttering off or the lattace work on the fence, huge sail area there
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hmm but is the wind really strong enough to do that?
Quote:
Originally Posted by rogerg
Interesting that it works for you.
I find that the straight head-height walls of my observatory are no good for preventing wind hitting the scope, in fact I wonder if they're worse. I find that the wind ripples over the top of the walls resulting in quite a lot of turbulent wind within the open half of the shed.
I suspect for me the actual result is probably no different to not having walls, because either way the scope gets shaken around, but to someone standing inside the observatory it's obvious that the wind is swirling around in a turbulent way rather than just blowing through.
A dome pointed away from the direction of the wind would be nice  one of the reasons that in my observatory's current location I would prefer a dome to a shed.
I have often considered what a good aerodynamic design would be for an open roof/roll-off-roof shed would be to prevent wind disturbance, where the wind is directed overhead without touching the scope. |
THanks Roger. Because the wind shield is directly facing north (you can see where my EQ6 is point at), it does help slightly with the west wind since west wind is always stronger.
Quote:
Originally Posted by ballaratdragons
Eric,
You will find that understanding a little bit about aerodynamics and basic air flow will help you too.
If you have the wind-break closer to the mount you will have more success. At the distance you have it in your pics, you will get swirling air flow up and over the tarp and buffeting around where your mount is. If you can confine the area more, the current should flow right over the top and down the other perimeter wall.
Your best option is to surround the mount with a windbreak only about 1m either side of the mount. Height can be kept down to about the height of the top of your scope or if you want, 200-300mm higher, so you won't be blocking any sky that way.
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I was thinking exactly that Ken. Moving it closer to the mount only "after" I mallet the metal rods down to the ground.
Tried pulling it out, no go..