Quote:
Originally Posted by Jeffkop
Hello again
Well after a patient 2 year wait Im finally starting my observatory construction. I have gone the way of a 2.3m Sirius and now need to consider the pier first. Im finding the more I delve into piers the more questions I need answers to ... Sheeeesh.
Anyway its occured to me that from a financial perspective a concete pier is a hands down winner ... just a tube, some reo, a stick to work the cement and a sloppy mix. Concerns about observatory relocation aside ... are there any astro-photography related issues that preclude this type of pier .. or rather ... are there any significant benefits of steel over concrete ... and what is the suggested diameter of a concrete pier that will most likely be 1800mm out of the ground.
Thanks for your inputs
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have a look at the thread on the doghouse observatory, mark4darkskies observatory - he has an excellent record and plans