Notifications
Clear all

Setting a backsight after the fact...

12 Posts
11 Users
0 Reactions
5 Views
(@jimzummo)
Posts: 1
Registered
Topic starter
 

I am new to the career field and unfortunately I made a pretty big mistake... my backsight didn't register in the systems and we started shooting points. Is there a way you can shoot the backsight after you have made shots? Any help would be awesome!!!

 
Posted : August 22, 2014 12:12 pm
(@lee-d)
Posts: 2382
Registered
 

It's definitely fixable... the easiest way to do so is going to depend on what data collector and software you're using.

 
Posted : August 22, 2014 12:29 pm
(@mark-chain)
Posts: 513
Registered
 

You might want to explain more precisely what you did and what equipment/software you are using. Did you "zero" on the backsight and forget to "collect" it? If you are shooting a lot of points you should recheck your zero or backsight angle throughout the course of you topography work.

If you backsighted with a random angle, and picked up the gun without checking back, you options are much less. Regardless if you did what I think you are describing, I am thinking it's salvagable. You might want to rebacksight and turn to some common points you shot before and make sure you are getting the same values. If it's not a huge number of shots, you might go ahead and shoot them all again.

 
Posted : August 22, 2014 12:30 pm
(@brad-ott)
Posts: 6185
Registered
 

You are getting good feedback already.

Some of these guys are going to give you a hard time. Grow some thick skin.

Do not let it get to you.

Eventually you will get the help you need (even if it means a trip back out to re-shoot the points ~ hopefully not though).

Great post. We have ALL been there.

 
Posted : August 22, 2014 12:51 pm
(@spledeus)
Posts: 2772
Registered
 

As long as there are some check shots into the backsight or some other control you can totally fix it.
Where was the zero? Put a point there and set it as the backsight in the FBK or RW5 file. If you use some other system, go ask someone else.

 
Posted : August 22, 2014 1:36 pm
(@paul-in-pa)
Posts: 6044
Registered
 

Whatever you do, do not rezero.

Shoot your backsight and readjust all in the office.

Paul in PA

 
Posted : August 22, 2014 2:36 pm
(@a-harris)
Posts: 8761
 

Setup again and take site on real backsite and turn to one or more identifiable foresites shot previously.

Go into cogo and rotate previous sites to new actual location of known foresite.

Been there done that and had to remind the crew that too many days like that and they will be earning minimum wage.

😉

 
Posted : August 22, 2014 2:39 pm
(@imaudigger)
Posts: 2958
Registered
 

YOUR FIRED!!

In my best Donald Trump voice...

 
Posted : August 22, 2014 3:30 pm
(@crashbox)
Posts: 542
Registered
 

^^THIS.^^

Such a process also helps if you inadvertently zero the gun when you should've keyed in an azimuth, et cetera... (though redundant shots may be redundant)-

 
Posted : August 22, 2014 4:59 pm
(@daneminceyahoocom)
Posts: 391
Registered
 

and this is why one uses a field book

paper notes come in handy right about now....

 
Posted : August 22, 2014 5:13 pm
(@sir-veysalot)
Posts: 658
Registered
 

It happens to all of us. Learn from it and move on.

 
Posted : August 22, 2014 6:18 pm
(@sir-veysalot)
Posts: 658
Registered
 

YOUR FIRED!!

Did you also do "the cobra"

 
Posted : August 22, 2014 6:21 pm