Thread on potential, but ultimately rejected plan is here...
The pier is precisely in the centre of the 9' x12' building. The south wall folds down to a height of 4'. The other three walls are 7' high.
The plan: Have the existing pier, currently 4' high, cut 12" above the floor. Weld an 8" square x1/4" steel plate on to the newly exposed 12" high pier. Bolt to this short plate a 1" thick plywood 'sandwich', 25" in diameter on which to set the feet of the dob.... This will raise the dob about 13" above what it would be sitting on the ground.
A matching plate is to be welded to the bottom of the cut-off portion of the pier so that the original 4' height, great for GEM mounts, can be restored at some future time... (My EQ6 will be used out on the lawn on my Losmandy HD tripod occasionally with the Mewlon 210 while the dob is in the obsy....) The dob will be somewhat easily moved to my van if I am going to a star party (2022 I'm lookin' at YOU!)
With the south wall folded down I will be able to bring the full 20-inch aperture to bear on objects down to about -25º declination. This is a compromise, I admit. But non-seated viewing is something I shall not stand for!!!!
The Eyepiece height at Zenith will be about 73" and, when pointed as low as the south wall allows, about 48". These heights will allow seated viewing with my Catsperch chair.
The side walls are 7' high. Pointing the scope due east or west is going to be difficult. My scale diagrams show that I will have to keep the scope pointed above about 60º elevation to the East and West. (I'll be able to "cheat" some with the scope pointed into the NE or NW corner.....) I will have to plan sessions to get most of my targets within about +/- 1 hour of the meridian.. This is when they are at their best anyway.... I also will have to be careful with the motorized slewing to not have the scope hit the side walls....
I've been asked before, why bother with a native f/3.3 scope if you raise it a foot above the floor? My response is that the f/3.3 allows me to raise it for use in the observatory and still see a goodly portion of the sky and still be seated while doing so, in the relative comfort of an observatory with walls that will block much of the wind.. An observatory also allows for almost zero set-up or tear-down time. Far more pluses than minuses..Anything that makes it EASY to get out observing...
Feedback is always welcome!