Last seen: April 9, 2026 5:20 pm
Nate The Surveyor, post: 409125, member: 291 wrote: Before you really invest any more energy in this project, be sure of what is going on.It just may ...
If the data from a field exercise is for topographic, and/or engineering, and funded by tax dollars, then a professional needs to be responsible. Real...
For that level of relative confidence, a few 100 ft, or 30 m baselines established, by the book, with a NIST calibrated Invar standard is cheap insura...
Bill93, post: 409070, member: 87 wrote: That's very important because any centering error would be systematic for a single setup. If you rotate your ...
My first Q is: 2mm/500m standard err or 95%?How many points?Never trust a tribrach. Plumbing of targets may require transiting from about 8-10 ft wit...
Under 15F I figure is a good time for static gps observations. Only have get tribrach leveled. Park close enough to keep the receiver in truck cab. Wh...
RoadBurner, post: 407371, member: 6168 wrote: Thanks again, Larry. Somebody should start printing the ephemeris again like Sokkia did. It had everyt...
RoadBurner, post: 407371, member: 6168 wrote: Thanks again, Larry. Somebody should start printing the ephemeris again like Sokkia did. It had everyt...
One mistake the is often made is using mean sidereal time versus Apparent Sidereal Time. Be sure to always use Apparent. I convert these times to HH.h...
RoadBurner, post: 406675, member: 6168 wrote: It's been years since I did one, but sometimes I'd like to think that I could do an hour-angle observati...
RoadBurner, post: 407192, member: 6168 wrote: I see declination and RA, but no GHA. What am I missing? Yes, I did have get GHA Aries using ICE.(GHA A...
Thank goodness for HP41 and HP15 apps for iPhone. Although I still program and punch my original 15c almost daily. I'm lucky enough to have 4 working ...
I came across a good quad map find. Working on a site map for Mount Rushmore, I pulled an early version 15 min. 1903, to compare with more recent maps...
My first real construction project, relatively new to the company, was a railroad bridge/grade separation/tunnel. (9 months of overtime.) The design w...
Major stars sun and planets GHA. declination.This is what you want. I use this site a lot for star and sun shots. You can get year long, 0hr GMT ephem...
Nate The Surveyor, post: 400968, member: 291 wrote: Finding a woman, willing to put up with a surveyor.I'm at a loss for words.Give em an inch, and th...
RADIORED, post: 402640, member: 8050 wrote: I recently acquired a Gurley Solar Transit, I am familiar on how it operates. I am looking for easy way t...
Then Gabriel ask Peter "is he a civil engineer?"And St Peter said "Oh yes, very polite".
In desert areas I find chaining pins. I don't think they were left intentionally.
Or swapping the gps base receiver file with gps rover file. And 3-4 people staring at it for 2+ hrs not understanding why everything is mirror image.