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  #81  
Old 10-03-2021, 01:30 PM
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Originally Posted by Merlin66 View Post
Bojan,
For my ROR I use a continuous cable connected to both sides of the roof, running over two pulleys and currently manual, but could easily be converted to a drive system. Basic and functional.
So far I was using only my hands (after climbing on a chair), and it wasn't hard to do at all.. At the moment I have 20mm straps from each side of the ROR that will go on the winch.
However, I want all that to be automated one day.. so I am taking my time with the project, I don't want to do something to prevent that final goal.. because I know myself (I tend to get used to things.. even if they are not too comfortable. And, recently I like to challenge myself..)
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  #82  
Old 11-03-2021, 09:32 AM
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Motor is on the winch...
Next step is to think about forward/backward switch.
Most likely it will be custom made mechanical unit at first (3D printed collar mounted at motor bottom, using existing solder terminals as switch contacts).
The final solution will be H-bridge with suitable interface (USB, to be controlled by comp).
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  #83  
Old 11-03-2021, 09:34 AM
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Good to see your industriousness

Best
JA
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  #84  
Old 12-07-2021, 10:42 AM
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C11 in action (visual for now)... finally.
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  #85  
Old 12-07-2021, 11:36 AM
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Very cool. Is that a. Brush seal on your ROR.?
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  #86  
Old 12-07-2021, 12:03 PM
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Quote:
Originally Posted by Sunfish View Post
Very cool. Is that a. Brush seal on your ROR.?
Yes, courtesy Bunnings.. Work very well.

Couple of drops of water on the floor sometimes is due to condensation, I still have to sort it out (with polystyrene sheets most likely).
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  #87  
Old 12-07-2021, 12:26 PM
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Looking good.
Enjoy the benefits of your hard work.
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  #88  
Old 12-07-2021, 05:18 PM
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Good on you Bojan, I am very happy for you.
Alex
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  #89  
Old 12-07-2021, 09:56 PM
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Yes , that sounds like it would help along with a vapour barrier under the styrene to keep the warm internal air off the metal roofing. Perhaps taping up the styrene joints would work.

Quote:
Originally Posted by bojan View Post
Yes, courtesy Bunnings.. Work very well.

Couple of drops of water on the floor sometimes is due to condensation, I still have to sort it out (with polystyrene sheets most likely).
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  #90  
Old 13-07-2021, 02:08 PM
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Bojan I think having a water proof cover over things is a good idea. It is easy to think that its inside so there is no need but I feel such is a sensible approach... minimises dust if nothing else.

I like using that aluminium foil stuff with foam on one side doubled so you have foil on both sides as it is not only water proof but a very good insulator.
Alex
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  #91  
Old 13-07-2021, 02:41 PM
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Alex,
We are like-minded :-)
I actually use exactly that (moisture barrier stuff that goes under the floating flooring).


BTW, I also decided to rotate OTA by 180° so the finder is now closer to mount and lower, I can use it on lower objects (this has yet to be tested).

I will use the other (right) side of ADM plate for guiding scope.
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  #92  
Old 13-07-2021, 02:58 PM
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Yes thats the stuff.
The girls here decided they did not like the fake plastic "timber" flooring and as they will just ripped it up...and thats how I discovered it... there was heaps of it and I used it on all sorts of things, which I cant remember, maybe in the small observatory??? and had to buy a big roll finally for the scopes...
But as I said I am so very happy to see you get this done ...now you must work less and use it...good luck.
Alex
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  #93  
Old 03-11-2021, 09:13 AM
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All is OK with mt Pleasant Obs.. after 4 months of lockdown and earthquake and couple of pretty strong storms

BTW, I found something better for dew shield - 10mm foam covered/reinforced with Al foil. It can be sprayed with black paint to improve blackness of the foam surface (it is dark grey).
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Last edited by bojan; 03-11-2021 at 09:39 AM.
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  #94  
Old 03-11-2021, 06:12 PM
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Very happy to hear that all was ok.
Alex
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