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Starting In on Buiding a Dome!

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100 replies to this topic

#76 John Fitzgerald

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Posted 21 November 2019 - 02:28 PM

Please, never make a slab larger than the building it sits on, unless the part the building sits on is raised.  Otherwise water WILL run under.  Been there, seen that, and it could not be fixed without a complete redo.


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#77 Tom K

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Posted 22 November 2019 - 01:02 AM

Please, never make a slab larger than the building it sits on, unless the part the building sits on is raised.  Otherwise water WILL run under.  Been there, seen that, and it could not be fixed without a complete redo.

+100 on this one.   If you want a slab to extend around the dome, form a center area a few inches higher than the rest of the slab and slope the slab outside of that away from the dome.   It does not need to be a lot of slope, but the thing about water is that if it can get in it will, no matter how much caulk or whatever is in the way.



#78 John Fitzgerald

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Posted 22 November 2019 - 10:29 AM

+100 on this one.   If you want a slab to extend around the dome, form a center area a few inches higher than the rest of the slab and slope the slab outside of that away from the dome.   It does not need to be a lot of slope, but the thing about water is that if it can get in it will, no matter how much caulk or whatever is in the way.

Thanks for the backup, Tom K.  I have seen too many learn this the hard way.



#79 Acer

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Posted 24 November 2019 - 09:40 PM

My Dad and I formed and poured the pad for my observatory today.

 

We were almost done when the wind came up and started blowing leaves in the fresh concrete.  So, we had to cover the whole thing with an awning and visqueen, then pick out all the leaves and finish trowel.

 

It is all finished now though.  It should be ready to set the dome on it in a few days.

 

49119507876_e0b1e7a38d_c.jpgDSCF2084-1 by Colo CJ, on Flickr

 

49119003398_885881838b_c.jpgDSCF2085-1 by Colo CJ, on Flickr

 

49119003448_dda96b69b3_c.jpgDSCF2086-1 by Colo CJ, on Flickr

 

49119003508_e3840eb37e_c.jpgDSCF2088-1 by Colo CJ, on Flickr


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#80 Acer

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Posted 03 December 2019 - 07:10 PM

Today I finished installing the base of the observatory. I mortared in the base to make it perfectly level, then anchored it down with tapcons.

 

The dome will be put on possibly tomorrow.

 

49165996781_e20c311edd_c.jpgDSCF2089-1 by Colo CJ, on Flickr

 

49165520438_8e1799da6b_c.jpgDSCF2090-2 by Colo CJ, on Flickr

 

49165996696_2e0bf9fbf0_c.jpgDSCF2091-3 by Colo CJ, on Flickr

 

49165520363_e7cc74c26e_c.jpgDSCF2093-4 by Colo CJ, on Flickr

 

49166231537_2a7f8fefae_c.jpgDSCF2095-5 by Colo CJ, on Flickr


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#81 TxStars

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Posted 03 December 2019 - 07:32 PM

Looking good, it should keep the cold wind off you..



#82 Acer

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Posted 04 December 2019 - 08:54 PM

Looking good, it should keep the cold wind off you..

Thanks.  I plan on eventually fully automating it, so I can just program what I want it to shoot nightly while I can sleep nice and warm inside :)



#83 Acer

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Posted 04 December 2019 - 08:57 PM

The dome is on the base now.  Tomorrow I'll weather strip the dome between it and the base to make a seal.  

 

It looks like first light could be as soon as this weekend, if the weather is decent!

 

49170593588_472319f275_c.jpgDSCF2097-1 by Colo CJ, on Flickr

 

49171069331_bb6aaf8d32_c.jpgDSCF2100-3 by Colo CJ, on Flickr

 

49170593558_2ca8ab743a_c.jpgDSCF2098-1 by Colo CJ, on Flickr


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#84 mikerepp

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Posted 05 December 2019 - 08:32 AM

Very nice and it looks like it is the center piece of the yard!   Well done!



#85 TxStars

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Posted 05 December 2019 - 08:58 PM

Looks very professional..

Would do a photo shop of it on a mountain, but CN rules..  lol



#86 Acer

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Posted 14 December 2019 - 09:00 PM

I worked a little more on the observatory.

 

I added weather stripping to the outside of the dome. Then I insulated and sheeted the inside and painted it.  I still have to add some lighting t the inside and I have to build and install the dome rotation system.

 

Tonight will be the first night I use it, if the weather clears.

 

49220269737_cf2ec9a060_c.jpgDSCF2101-1 by Colo CJ, on Flickr

 

49220269677_f20a20b2c9_c.jpg_DSC5149-1 by Colo CJ, on Flickr


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#87 rimcrazy

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Posted 16 December 2019 - 09:08 AM

Been following this topic.  Pretty awesome job.  I'm so impressed.  This came out really sweet.  What a great job.  Kudo's to you and everyone that helped and lots of clear skies your way!


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#88 CCD-Freak

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Posted 16 December 2019 - 11:12 AM

Looks nice and cozy in there. laugh.gif

 

 

John

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#89 Raginar

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Posted 17 December 2019 - 02:38 PM

You have plans to automate it?



#90 Acer

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Posted 22 December 2019 - 06:25 PM

Thanks everyone 

 

You have plans to automate it?

Yes, I plan to automate it.  I am thinking of going with a DIY approach and using the Lesvedome Open source code.


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#91 Cfreerksen

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Posted 22 December 2019 - 06:56 PM

I worked a little more on the observatory.

 

I added weather stripping to the outside of the dome. Then I insulated and sheeted the inside and painted it.  I still have to add some lighting t the inside and I have to build and install the dome rotation system.

 

Tonight will be the first night I use it, if the weather clears.

 

49220269737_cf2ec9a060_c.jpgDSCF2101-1 by Colo CJ, on Flickr

 

49220269677_f20a20b2c9_c.jpg_DSC5149-1 by Colo CJ, on Flickr

Glad to see the dome going well. Oh and do me a favor. Lay that newtonian down or secure it to the wall...it's an accident waiting to happen and it's freaking me out.

 

Chris


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#92 John Fitzgerald

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Posted 23 December 2019 - 09:03 AM

Will the slit open enough to see the zenith?



#93 SteveGR

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Posted 23 December 2019 - 02:53 PM

Glad to see the dome going well. Oh and do me a favor. Lay that newtonian down or secure it to the wall...it's an accident waiting to happen and it's freaking me out.

 

Chris

I was thinking the same thing. smile.gif  


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#94 Acer

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Posted 06 January 2020 - 10:41 PM

Imaging in my Dome for the first time, on this windy Colorado night. Nice and comfortable in here though! My mount came back today so I am finally using the dome.

 

Just a small 105mm lens on it right now and collecting SII and OIII for finishing up a widefield image.

 

The H-Alpha data posted below.

 

49342918696_ab33b45b5b_c.jpgFirst Night in the Dome by Colo CJ, on Flickr

 

49332346807_89256846fd_c.jpgFlaming-Star-2hrs-H-Alpha-Small by Colo CJ, on Flickr


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#95 MHamburg

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Posted 07 January 2020 - 09:06 AM

Fantastic! Looking forward to more images.

Michael



#96 outofdark

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Posted 07 January 2020 - 10:09 AM

Great looking setup!



#97 mikerepp

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Posted 07 January 2020 - 02:59 PM

Very nice!  Great setup.


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#98 Cfreerksen

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Posted 24 January 2020 - 12:16 AM

Congrats on the RASA. Got any dome automation coming with that?

 

Chris



#99 althor74

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Posted 29 October 2020 - 08:43 AM

Couple questions for you on your dome construction. I'm working on my own diy dome now. I'm trying to nail down a few construction details.

 

1. Weatherstripping. I like the look of the white outer weatherstripping you used, shown in post #86. What type is that / where did you get it?

2. Brackets. It appears that you have some silver brackets you're using, possibly to hold the dome down in the first inside pic, also in post #86. It's right behind the scope standing up. If that's a bracket designed for keeping the dome held down could you post a closer photo of it please?

3. Wheels. Do you have any photos you can post to show the way you mounted the wheels for your dome? I've not seen anyone use roller blade wheens or how they mounted them.

4. Also it's been about a year since you last posted here. Have you had any success automating your dome? Did you use Lesvedome like you thought? I've been considering the same approach and wondered how it turned out for you.

 

Your dome looks like it turned out awesome, congrats! You photos from it the past year are fanstatic too. Hard work pays off. Clear skies to you.


Edited by althor74, 29 October 2020 - 01:30 PM.


#100 Acer

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Posted 29 October 2020 - 08:46 PM

Couple questions for you on your dome construction. I'm working on my own diy dome now. I'm trying to nail down a few construction details.

 

1. Weatherstripping. I like the look of the white outer weatherstripping you used, shown in post #86. What type is that / where did you get it?

2. Brackets. It appears that you have some silver brackets you're using, possibly to hold the dome down in the first inside pic, also in post #86. It's right behind the scope standing up. If that's a bracket designed for keeping the dome held down could you post a closer photo of it please?

3. Wheels. Do you have any photos you can post to show the way you mounted the wheels for your dome? I've not seen anyone use roller blade wheens or how they mounted them.

4. Also it's been about a year since you last posted here. Have you had any success automating your dome? Did you use Lesvedome like you thought? I've been considering the same approach and wondered how it turned out for you.

 

Your dome looks like it turned out awesome, congrats! You photos from it the past year are fanstatic too. Hard work pays off. Clear skies to you.

1.  The white weather stripping between the dome and the base is actually plastic garage edging (used to trim out the opening around garage doors).  I bought it at Home Depot.

2.  I'll try to get a photo of the brackets.  It is basically just a 2" piece of flat bar that I bent to a certain shape.  It holds a 2" wheel that rolls along the edge of the dome to keep the dome centered and has a piece of steel that overhangs the top of the dome ring to keep the dome from lifting if strong winds come up (never had a problem, even in 100 m.p.h. winds).

3. I just used the correct sized rod for the axles for the rollerblade wheels.  I used a router to route out the hole in the base for the wheels to mount into and routed out the area for the axle just deep enough for the axle to be a press fit, then epoxied the ends of the axles in the base.  I unfortunately don't have any close ups of it.  I only used 8 wheels, if I did it again I'd use 12 or so, to spread the load out more.  The dome is pretty heavy (probably close to 300-350 lbs. and 12 wheels would have spread the load easier.

 

4.  Since completing the dome, I have been pretty lazy.  I have just been staying inside the dome, or going out and rotating it by hand. I also have only been able to use it a couple dozen times between the clouds and wildfires we've had here this year.   I do need to automate it and still plan on the Lesvedome setup.  Here is a page that I will be going by when I finally get around to it:  http://www.dppobserv...L0LC1LFvmjfu4xI

Thanks for the kind words.  Besides not automating it yet, the dome has been all that I hoped for.  Having a place always setup right in your backyard is an awesome experience.  I've been dreaming since I was a kid of having something like this and it has been great  so far.




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