[GeoStL] Re: Question for the group!!!!
- From: GC-RGS <gc-rgs@xxxxxxxxxx>
- To: geocaching@xxxxxxxxxxxxx
- Date: Mon, 03 Feb 2003 15:37:53 -0600
-
Dan,
I know they've (GC.com) had some problems with the cache page maps. Most of
the problems I've seen with the map is it's correct or WAY off, like a
different country. If you zoom in on some of the maps, they may show the
cache outside of a park, when you know it's within the park. That's probably
an error with the size of the park. and just not current on the map
displaying the coords. The other thing could be the WGS84/NAD27 difference,
but you know better than that.
And Dan, speaking of topo maps, I've got some older ones here that I bought
in the early 70's from USGS in Rolla. The primary grid (red) on those seems
to be 10,000 ft. The UTM grids are small blue tick marks around the border.
Are the maps still printer that way or are the UTM grids drawn on the maps
now?
Rich
----- Original Message -----
From: "Dan Henke" <thunder_monk@xxxxxxxxx>
To: <geocaching@xxxxxxxxxxxxx>
Sent: Monday, February 03, 2003 1:29 PM
Subject: [GeoStL] Question for the group!!!!
> -
> I have a question and I am not sure if you all will be
> able to answer it but it has been bugging me for a
> while. Yesterday I went out and established a new
> cache and took a reading from 2 different GPS
> receivers. One a Garmin (Camo) and the other a
> Megellan SporTrak....they agreed to within a .001
> place on the location. I then jotted down all the
> information and proceeded to fill out the form for the
> cache. When I received the advanced copy of the page I
> checked the map to see that the coords had plotted
> correctly and low and behold they are 1/2 mile off.
> Now barring the fact that I may have transposed a
> number when writing them down and I will check this
> tonight. What could cause my readings to be so far
> off?
> This is not the first that this has happened but I am
> hoping to make it the last. When I start getting this
> kind of stuff it makes me wonder everytime I consider
> putting out a cache. I have a new cache in the works
> and accuracy is absolutely necessary for the scenario
> to work. I appreciate any help and if the GPS sessions
> that are being talked about do come about I would
> appreciate a little on how to take readings when
> setting a cache and also things like projecting a
> waypoint....using trackback and stuff like that .
>
> Thanks
>
> Dan
> (Thunder)
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