In the process of Building my Observatory.
Posted 02 October 2013 - 07:27 PM
Posted 02 October 2013 - 10:38 PM
Posted 02 October 2013 - 10:52 PM
I will tell you though even though I had just built an observatory last year at a friends house,75 miles away, I kind of forgotten how heavy those 2"x8" treated boards can be let alone with 3/4" 4x8 plywood. I worked my tail off on that OBS yet this one seems to be really kicking my tail.
Posted 02 October 2013 - 11:49 PM
Posted 03 October 2013 - 12:13 AM
Posted 03 October 2013 - 12:41 AM
Ya I feel fa ya , I know you must be fighting time to , I think the weather over there is starting to get cold also
Nate,I had a few other things that had to get done today before the sky decided to fall. So the only 2 things I got done today were installing a window and spray painting with rustoleum flat black,the angle iron after it was installed.
Posted 03 October 2013 - 04:38 PM
Posted 03 October 2013 - 08:54 PM
Posted 04 October 2013 - 08:21 AM
I am using 2"x6" boards and making it a vaulted ceiling so as to have plenty of head room for the scopes.
One thing I really wish I had done,was had my 10" LX200 scope here when before I had poured the pier. As it stands now,The pier height from the floor up is 48 3/4" tall. I had planned to make the wallsto a 6' height yet after pouring the pier,had to go with the 4' height. I am 6'3" tall yet and with the walls now set at a height of 86 1/2", so that the one scope stays within the OBS,I am going to have to build a platform around the pier base so I will not have to use a ladder for viewing lower in the sky. I feel so much like an idiot for not having checked the height of the LX200 10" at zenith before pouring the pier.
There will be times when I want my CR150 HD 6" Refractor mounted on the pier ,so the height of the pier will be an advantage,yet will still have to add an additional pier extension to it so I am not on my knees to view thru it. There seems to be way too many variables to think about when building this permanent structure.
The one main thing to consider for me, was and still is aesthetics of the OBS as far as my wife is considered. She has stated the outrigger portion looks like a car port. I will have to think of something to kind of disguise or otherwise enhance the looks of that end somehow. The OBS is next to the area that is our vegetable garden. In fact,the support posts are partially in the garden.
Posted 04 October 2013 - 08:43 AM
I am using 7/16" OSB plywood for the substrate on the roof then placing the steel on that.
The roof will have a 3/12 pitch so as not to block as much of the view when rolled off.
There are 2 main reasons for the OSB sheathing in my opinion. One reason is without it,using purlins,condensation will form on the underside of the steel as it has on a previous OBS build I have done.
The other reason in my mind, at a 3/12 pitch,with snow on the roof, OSB will strengthen the roof.
Now, Is there really a need to apply roofing felt prior to the steel? You definitely would if using asphalt shingles,yet is it really necessary for steel?
Stupid question Right? Of course, the more protection the better. Just thought I would throw that out there and get some insight since I have only used this type of roofing once before..
Posted 04 October 2013 - 11:46 AM
Posted 04 October 2013 - 11:53 AM
Posted 04 October 2013 - 01:33 PM
Posted 04 October 2013 - 04:00 PM
Posted 04 October 2013 - 07:29 PM
Posted 05 October 2013 - 08:27 AM
I attached the casters yesterday to the 2'x8' boards yesterday and wow they are going to be quite a bit higher off the top plate of the wall than I had anticipated.
With the design I have now,4" V casters
,the roof will be rolling at least 7 inches higher than the top plate of the walls. On the other OBS I built the casters are smaller and only have the roof rolling about 4 inches higher than the walls. I guess this is no big deal though.
Posted 05 October 2013 - 08:37 AM
Blizzard still going on 200 miles to the west and we could still get more rain here thru tomorrow. Extremely weird weather here,Tornadoes 90 miles away last night while Blizzard going on a less than a couple hundred miles to the west.
Posted 05 October 2013 - 11:55 AM
the roof will be rolling at least 7 inches higher than the top plate of the walls.
However, it you are going to have a gap this large, this stripping will not cover it. I have a very small gap between the roof and the base of the observatory. I worry that you will be getting lots of uninvited "guests" thru a gap that large. You may have to figure some sort of cover on the outside of the building, attached to the moving roof section.
Posted 05 October 2013 - 12:57 PM
Posted 05 October 2013 - 08:57 PM
I stated above that I have merely been working on this build for a week yet after going back to another thread that I had discussing concrete,I realized that I had started the OBS build on Sept.24th so it has been 2 weeks now since I started. Good grief ,am I getting that old to where I forget so easily the time that has passed. No wonder I feel as though this is going so slow.
Posted 05 October 2013 - 09:05 PM
Posted 06 October 2013 - 02:27 AM