My astronomy project:
Building an Observatory
(or a playhouse for big boys and girls)

Content:

1. Frame
2. Roof
   1. Building the roof frame
   2. Building the door
   3. Building the hatch
   4. Mounting the roof panels
   5. Roof top panels
   6. Roof side panels
3. Roof mechanics
4. Floor

Note:
I take no responsibility or liability for what are written here, you use the information on your own risk!

Page II.5: Roof top panels

Today I shall try to make a top cover of the joint of the two roofs. Not an easy project.

I need some profiles with length of 2.5 meters, these was the only ones I could find, they are made of steel. I need two of them.

First I made this distance of wood to have something to mount the top panels at.

The distance in place.

The profile that cover the lower big roof at right. You can see how the right side of profile ride on top of the plastic roof panel.

From other side and now the second top roof panel in place. To the right is the panel that cover the lower roof panel. The joint between the two steel profiles I will use as an air ventilation outflow with a filter to stop bugs come in.

A view over the small roof panel with the top cover, it looks nice.

The left roof swing over the right roof panel when closing. I already now see that I will get a problem here. The right roof panel isn't very step. If the wind blow from wrong direction it will press the water up under the top cover and then drop over the edge into the observatory, a soft gasket maybe will be the solution.

In closed position.

View over the big roof panel. I feel this will not be easy to get to function properly. It had been easier If I had chosen an ordinary sliding roof. But then it hadn't been as exiting as this solution, and if I don't want to have any problems I shouldn't doing astronomy at all! I can always change the construction easy to a sliding roof. The drawback with a sliding one part roof is that I need an opening to the telescope.