Quote:
Originally Posted by Terry B
I think that there is to much hype about how big the pier needs to be. Mine is cast iron about 150mm diameter. If I hit it it will move but who hits their pier?
The mount should be balanced on the top of it pretty well so there is very little lateral force on it except perhaps when you are slewing. This isn't when you are imaging so it doesn't matter.
The mount should balance on the pier with no connecting bolts.
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Quote:
Originally Posted by jenchris
Mine is 230mm x 1.7 and it doesn't have any LF vibes -
It is Mains HP water pipe full of concrete and steel.
I tend not to clout my pier whilst imaging and it seems to stay quite still -
mind you I only built the Obsy last week and I've only had 2 hours to set it up last night and the night before.
The moon didn't do much more than allow me a chance to drift align.
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Thanks for your posts ... yes I think the pier design could easily be way over engineered .. but not according to the owner of astro engineering .. he see's it as another machine in the imaging process and I am not disagreeing with that .. but realise there is a price to pay for his standards and like you both say ... who is going to tap their mount when imaging anyway. There are all different types of piers in use out there and a lot of happy owners to got with them so I dont see it as a very daunting exercise to count myself amongst those in the end. I will be carrying some weight on the mount ... A titan and BRC250 with a Sky90 guidescope plus cameras and counter weights etc is going to add up to some Kg's but like Terry says, if the pier is vertical and the system balanced then Im going to be in a good spot.
I have a great anticipation .. Ive been waiting for 2 years with all this equipment ready to go into an observatory.