My astronomy project:
Building a pier to my EQ6 / HEQ5 mount

Contents:

1. Introduction and steel plate
2. Making of the two concrete piers
3. Assemble it together
4. Find north and level mount
5. Drainage
6. Adapt the pier for HEQ5 mount
7. To be continued

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

5: Drainage

One thing left to do is to drain around the pier. As you see that under what I thought was a thin layer of moss there was a hole in the rock. I must have it drained and dry in the surroundings of the telescope. Maybe not so serious problem, most built there observatory on lawns and it works that too.

This how it looks for the moment, rock edge has been removed. Has been relatively simple, with chisel and hammer. Did not know astronomy include this kind of job, but you get good exercise.

To the right stands the water. Luckily there is a crack in the rock that after processing can lead the water out.

Here are the channel to divert water away. Has lowered the ground 0.1 meter so that drainage will be effective. The remaining cavity fills up with crushed rocks.