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I have ordered a couple of cubic metres of self-compacting gravel. This will be used to solidify the expanded plinth on which the observatory stands.
It is very difficult to turn into the space behind the house. So I decided to move the fibreglass dome backwards. I laid a lot of 4x4 timbers on the ground in an arc to the NW of the dome. Then used another length of 4x4 to lift on the west side and lever the dome sideways.
It worked too! I gained about 1.5m or 5' of extra clearance for turning. If the lorry can tip the gravel in the best position it will avoid moving it a long way. I could move the dome even further back but I am far too hot and tired for the moment. I need a rest.
The gravel was safely delivered. It was quite a close fit between the hedges as it was a large tipper truck. There was no chance it could turn. I shall wait until it is cooler before I start shovelling it into wheelbarrows. The barrow is posed at midway on the pile for scale.
Meanwhile, I have been trying to find a better way. To support the very long, H-alpha filter stack on the tail end of the telescope. Unfortunately, the etalon and the FT focuser bases are not compatible. They share a similar V-groove holding arrangement but differ in diameter. I shall have to find a better way.
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