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Post height

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PSG

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Solar Nebula

Posts: 93

Joined: Mon Dec 31, 2012 12:34 pm

Location: Calgary, Alberta, Canada

Post Wed Oct 10, 2018 4:35 pm

Post height

I have pretty much put my hobby aside due to lack of time while I put in my last few years of work. Now I am preparing to retire and I am building my dream home at a good dark sky site in the interior of British Columbia, Canada.

I am including a built in roll off roof observatory in the house design. It will be 8'X 10' and I want to include 2 concrete plinths.

At present I have the WO 132 which would be good for astrophotography but I will likely buy a new mount and possibly a large SC telescope - say a 14" Celestron for permanent mounting.

My problem is I have to make a guess at the wall height and the level of the plinths above floor level and I don't know what kind of mounting bolt pattern to put on the plinths.

My current thinking is to make the walls 7' high, the plinth 1 or 2 inches above the floor and put four bolts in a square pattern with 10" centers. I am hoping this will allow me to adapt to any telescope and mount in the future - does anyone have any thoughts on this? Maybe some links to good discussions?
William Optics FLT 132, William Optics GTF81mm, iOptron iEQ45, iOptron Minitower Pro, Televue Binoviewer BVP-2002, Orion 10" Dob, 6" Celestron SCT, Coronado Solarmax II 60, Orion Star Shoot Planetary camera, The Imaging Source DBK 21AU04, Vixen Polarie Star Tracker, Nikon D810
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MikeM

User avatar

Magellanic Cloud

Posts: 1978

Joined: Thu Jan 29, 2009 6:24 am

Location: NJ, USA

Post Thu Oct 11, 2018 7:40 am

Re: Post height

7ft sounds about right to me so one doesn't have to crouch while walking about. In reading others conversation, you have to keep in mind if you are going to use a standard size door or have one fabricated. Obviously a standard size would be more cost effective.
As for the pier (plinth) maybe a good idea would be to set up your equipment and take the measurement from the top of the tripod to the floor and add about 2-3 feet beneath it for when sinking it into the ground?
Rick aka gardenfish just recently finished building one, maybe he will chime in and give you his thooughts.
Below are a couple of discussion on the topic in CN.

https://www.cloudynights.com/topic/523718-wall-height-verses-pier-height/

https://www.cloudynights.com/topic/258107-pier-height-vs-wall-height/
Clear Skies!
Mike

AT8RC -- FSQ-106N
G11
Atik 383L+ - EFW2 - OAG
Image
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PSG

User avatar

Solar Nebula

Posts: 93

Joined: Mon Dec 31, 2012 12:34 pm

Location: Calgary, Alberta, Canada

Post Thu Oct 11, 2018 12:37 pm

Re: Post height

Thanks Mike, those are great discussion links.

One of my problems is I haven't actually purchased my final mounts so I have to make it generic.
William Optics FLT 132, William Optics GTF81mm, iOptron iEQ45, iOptron Minitower Pro, Televue Binoviewer BVP-2002, Orion 10" Dob, 6" Celestron SCT, Coronado Solarmax II 60, Orion Star Shoot Planetary camera, The Imaging Source DBK 21AU04, Vixen Polarie Star Tracker, Nikon D810
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PSG

User avatar

Solar Nebula

Posts: 93

Joined: Mon Dec 31, 2012 12:34 pm

Location: Calgary, Alberta, Canada

Post Thu Oct 11, 2018 5:50 pm

Re: Post height

This is what I have in mind

snap 1.JPG
snap 1.JPG (58.43 KiB) Viewed 347 times


snap 2.JPG
snap 2.JPG (64.59 KiB) Viewed 347 times
William Optics FLT 132, William Optics GTF81mm, iOptron iEQ45, iOptron Minitower Pro, Televue Binoviewer BVP-2002, Orion 10" Dob, 6" Celestron SCT, Coronado Solarmax II 60, Orion Star Shoot Planetary camera, The Imaging Source DBK 21AU04, Vixen Polarie Star Tracker, Nikon D810
<<

PSG

User avatar

Solar Nebula

Posts: 93

Joined: Mon Dec 31, 2012 12:34 pm

Location: Calgary, Alberta, Canada

Post Thu Oct 11, 2018 9:47 pm

Re: Post height

A picture I took with my DSLR at the new house site. The black clouds tell me there is very little light pollution. When you have light pollution the clouds tend to be brown or orange.

https://flic.kr/p/MqDrx3
William Optics FLT 132, William Optics GTF81mm, iOptron iEQ45, iOptron Minitower Pro, Televue Binoviewer BVP-2002, Orion 10" Dob, 6" Celestron SCT, Coronado Solarmax II 60, Orion Star Shoot Planetary camera, The Imaging Source DBK 21AU04, Vixen Polarie Star Tracker, Nikon D810

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