Meade 8" LX200GPS
Meade Super Wedge
Thousand Oaks Off Axis Solar Filter
LX850 blog: www.LX-850.com
personal website: www.wadsworthobservatory.com
Enjoy the sky,
Quote:It is neat that some clubs have these for their members. Are the fork mount bases common so one wedge can be used for multiple scopes, or do these have to be identified for use by a brand and maybe even a family model?In building a pier I have a tractor mounted auger that can make a 3 foot deep hole which would hold a 12" sonotube concrete form. Would this be sufficient or do most piers actually have a buried footing?I think I feel another project being added to my to do list!!
Meade LX200 10" f/6.3 Classic
Celestron Nexstar 8SE
Celestron 90mm Mak Meade 90mm f/8.8 Refractor
Celestron CR-150-HD6 ,6" f/8 Refractor
TASCO 60MM X 900 MM Refractor (My first scope that my wife gave to me for Christmas in '91 , still have it.
Celestron CG5 Advanced Mount
Celestron Bino Viewer
Orange Zone 10'X12' Roll Off Roof Observatory Southeast, South Dakota
Quote:LC61, I was afraid someone was going to tell me I needed a footing. Using a tractor auger sounded too easy, but it sure would have been nice. Our soil here is not that solid so I guess that would be the prudent thing to do ^&*!!On previewing the post I can't stop laughing. I just held down the shift key and hit several numbers to give me characters that would imply me swearing. I guess they actually meant something and I think it is too cool to change!!Tim, while I do not have winters quite as bad as yours, I do have to worry about frostline. The local building code requires footings to be buried at least 2 feet, and I was hoping that an auger to 3 feet would be good enough. If I am going to the trouble of digging a footing in, I might as well go to 4 feet also. My poor old back is complaining already!!Now for the ugly question for both of you. Before I do something that will bite me hard later I want to run one past you. I am considering making two sheet metal plates that have the exact hole pattern as my wedge. I would then take all-thread and lock the two plates about 12" apart. I would take one of the plates and bury it about 8" into the concrete. When the concrete was dry, I would take the top plate off and replace it with my wedge. I know this would take careful planning so I could get a good alignment but what do you think of the idea?
Quote:I like the small back hoe idea, the problem is I am over an hour away for any rental shop, two hours round trip to get it and two hours round trip to take it back. I think I could hand dig it in that time and then I just get to complain about my sore back!!If I went with an adapter plate I would use all 1/2" bolts. If I connect directly to wedge the center hole is 1/2" but the three perimeter holes are all 5/16". Would that smaller size concern you?
Quote:It looks like I better think this one through a bit more, errors in concrete are not easily corrected.I do not want to enlarge the holes in my wedge as I want the option of going back to the tripod. I was thinking that the additional vibration of the smaller bolts would be countered by not having that intermediate plate. At least I don't need a decision tonight, I do have time to think about it for a while.As far as the digging here, I am complaining more than I should. The clay layer is probably down about 5', and the stuff above it is more of a sandy dirt. As long as it is not totally dry, it digs pretty reasonably.I appreciate your input, I will keep you posted as I go.