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NGS Point Sphere

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(@azweig)
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I was looking through some pictures on an old thumb drive and came across these. They are about 4 or 5 years old and are from when I was in Florida. The Power Squadron couldn't find it, but that's not really any surprise. The point is on the roof of a high rise condo building. We had to be escorted by their security officer. I think it was a really cool idea for the roofers to build the wooden boxes around the points when they redid the roof. We found the point and the 2 azimuth marks that were also on the roof.

 
Posted : December 9, 2013 6:16 am
(@dan-patterson)
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I hope you didn't step on those bipod feet 😉

 
Posted : December 9, 2013 6:22 am
(@steve-corley)
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Did you post recovery notes on the NGS Website? That is something I always like to do with it has not been recovered lately.

 
Posted : December 9, 2013 6:33 am
(@azweig)
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The company I was doing the GPS work for did and submitted pictures, but it was never updated.

 
Posted : December 9, 2013 6:41 am
(@shawn-billings)
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that's really cool.

 
Posted : December 9, 2013 7:08 am
(@bill93)
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>point and the 2 azimuth marks that were also on the roof

The terminology on the data sheet would be "station and 2 reference marks". The azimuth mark, if there is one, would be 1/4 mile to a couple miles away.

And could someone educate me? I've never heard the term "point sphere". Does that refer to the station disk?

 
Posted : December 9, 2013 8:00 am
(@azweig)
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When I said point sphere, I probably should have typed it as point "Sphere". It is the station name. I apologize for the confusion it was before the morning caffeine.

 
Posted : December 9, 2013 8:12 am
(@bill93)
Posts: 9834
 

NGS Point "Sphere"

Duh! I should have realized that what I could see of the stamping matched up with "SPHERE"

Thanks.

Data sheet AC3440 "SPHERE"

 
Posted : December 9, 2013 8:25 am
(@mike-marks)
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I'm surprised the NGS would consider the roof of a high rise stable enough to place a control station on. A three story parking garage, maybe, but a curtain wall residential high rise?

 
Posted : December 9, 2013 9:40 am
(@pkm04096a)
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When I was working in Florida we used a point on top of the Vertical Assembly building at KSC regularly.

 
Posted : December 9, 2013 11:53 am
(@andy-nold)
Posts: 2016
 

Downtown Fort Worth has one set on what was then known as the Fair Building in 1935. It was last recovered by a geocacher in 2009. I had been meaning to do a recovery but never got around to getting permission.

http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=CS2998

 
Posted : December 9, 2013 3:10 pm