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Observatory Construction

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#51 KennFromTX

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Posted 06 January 2017 - 05:12 AM

Davebl that looks like a killer dome!!! Yes my dome will be sitting on a square building it will be roughly the same diameter as the dome 7'x7'. Im still contemplating how high to make the walls, im guessing 6' will do with a long pier. I am planning on adding a "warm" room next to it later down the line maybe an 8'x12'. Quick question, how did you go about attaching the dome to the roof / what did you use to water proof?


Edited by KennFromTX, 06 January 2017 - 12:34 PM.


#52 davebl

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Posted 06 January 2017 - 01:16 PM

Hey Kenn,

I made sure the "flat" part of the roof was higher in the middle where the Dome ring attaches so the water would run off away from the Dome. For a gasket at the bottom of the door I used a seal made for the bottom of a garage door. It worked really good. Check out larger hardware stores or even companies that install and repair garage doors. One thing to watch, the gasket comes in 2 varieties that I have seen. One is really stiff and the other is fairly soft and pliable. The softer one is the one I recommend. I had to use 2 pieces so I used contact cement to connect the ends. Worked great.

Dave


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#53 davebl

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Posted 06 January 2017 - 09:54 PM

Kenn,

Here's a link to the seal I used

 

http://www.homedepot...-G16H/100141379

 

As I recall, I attached this to the "roof" of the square building and had an aluminum skirt at the bottom of the Dome.

Dave


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#54 KennFromTX

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Posted 08 January 2017 - 03:19 AM

Thanks Dave.



#55 KennFromTX

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Posted 10 January 2017 - 02:05 AM

Here's a couple more pics of the observatory as it comes along.WP_20170108_17_45_02_Pro.jpg



#56 KennFromTX

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Posted 10 January 2017 - 02:05 AM

WP_20170108_17_45_11_Pro.jpg



#57 KennFromTX

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Posted 10 January 2017 - 02:07 AM

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#58 KennFromTX

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Posted 10 January 2017 - 02:07 AM

WP_20170109_10_25_47_Pro (2).jpg


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#59 KennFromTX

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Posted 10 January 2017 - 02:08 AM

WP_20170109_10_26_09_Pro.jpg


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#60 KennFromTX

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Posted 10 January 2017 - 02:09 AM

WP_20170109_10_26_19_Pro (2).jpg


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#61 KennFromTX

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Posted 10 January 2017 - 02:10 AM

WP_20170109_10_30_10_Pro (2).jpg


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#62 rimcrazy

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Posted 10 January 2017 - 07:40 AM

Very nice build.  How are you planning to keep the top from making lateral shifts while moving?  Side rollers?


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#63 KennFromTX

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Posted 10 January 2017 - 08:04 AM

Very nice build.  How are you planning to keep the top from making lateral shifts while moving?  Side rollers?

Yes sir, i believe on the second page i have a sketch of what might work, although i might have to go with something alot smaller so i wont be to constricted in the obs.



#64 rimcrazy

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Posted 11 January 2017 - 08:10 AM

I'm not seeing the sketch but I don't believe it would take much just an orthogonal set of rollers, maybe just 3, that are lightly spring loaded to keep it in place.  Are you going to just move it by hand or are you looking to use motor control?  Reason I ask beyond just curiosity is I currently have a 10' HomeDome.  The mechanical configuration and mechanism that rotates my dome, IMHO, is a Rube Goldburg.  It continually fails, is not very robust for temperature changes between seasons and basically is a major PITA.  I'm looking at replacing it with a rack/pinion setup.  Can't do anything at the moment as it's way to cold where my observatory is at the moment but come the summer I'm looking at reconfiguring it completely and I'm interested in what approaches others are using to solve the problem.

 

Nice you have experience in working with fiberglass.  That stuff can be particularly nasty but if you know how to work with it you can get some very nice results.  Looking forward to more pictures and the progress on your build.


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#65 jklapheke01

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Posted 11 January 2017 - 11:52 PM

I just finished reading your forum post, outstanding. I am in the process of laying out what I want for an observatory, Dome vs. slide off roof. I consider myself pretty handy. Few questions about your build. Where did you get your measurements from? What about connecting the dome to the building? I fully realize there are more questions to go along with the research on this type of project. Any assistance that you can give would be great. Keep up the great work. Clear Skies.


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#66 KennFromTX

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Posted 12 January 2017 - 11:11 AM

WP_20161229_02_57_39_Pro.jpg WP_20161229_02_57_46_Pro.jpg WP_20161229_02_57_51_Pro.jpg

Very nice build.  How are you planning to keep the top from making lateral shifts while moving?  Side rollers?

 


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#67 KennFromTX

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Posted 12 January 2017 - 11:30 AM

RimCrazy i was planning on putting those spring loaded castors but each one is 1' long, not very convenient so today i wil come up with a different method i will post pics soon. Thanks for looking.     Clear Skies



#68 KennFromTX

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Posted 17 January 2017 - 02:16 AM

And so the build continues, this past week my buddy was able to stop by and finish the other half of the dome ( fiberglass ) and also helped out with the sanding, getting really close to completion. Enjoy the pics and Clear Skies   :grin:                               WP_20170115_15_22_23_Pro.jpg


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#69 KennFromTX

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Posted 17 January 2017 - 02:16 AM

WP_20170115_15_22_14_Pro.jpg



#70 KennFromTX

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Posted 17 January 2017 - 02:17 AM

WP_20170115_16_34_55_Pro.jpg


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#71 KennFromTX

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Posted 17 January 2017 - 02:18 AM

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#72 KennFromTX

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Posted 17 January 2017 - 02:18 AM

WP_20170115_17_42_50_Pro.jpg


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#73 KennFromTX

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Posted 17 January 2017 - 02:27 AM

Also this past week i was able to get the framing done for the observatory ring base. This coming week my friend will be back to fiberglass the whole base section of the obs, we will also be attaching the skirt to the dome and add fiberglass to that as well.WP_20170115_13_19_54_Pro.jpg



#74 KennFromTX

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Posted 17 January 2017 - 02:28 AM

WP_20170115_13_20_07_Pro.jpg



#75 KennFromTX

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Posted 17 January 2017 - 02:29 AM

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