+tirediron Posted March 22, 2003 Share Posted March 22, 2003 Just got my Legend a couple of weeks ago, and couldn't be happier. I have found one cache so far (It can be a tough sport when you can only cache near bus routes, ). Today I decided to see just how accurate it was, and after doing a pull off of the Natural Resources Canada website, I found a Geodetic Survey Division Marker located in park not too far away. {Marker 4719066 NEEDHAM (368) 106 N44 39 55. 5504 63 36 2.7585}, which translates into: N44°39.925833 W63°36.045966. The reading on my legend, when right on top of the marker was:N44 39.926 W063 36.046, and it indicated < 2.5 ft from the waypoint I had entered in! I don't know about anyone else, but I am not going to complain about those numbers. Now, with those numbers, why did I get skunked on those two caches this morning???? Quote Link to comment
+EScout Posted March 22, 2003 Share Posted March 22, 2003 I have a legend also, and I am impressed with the accuracy. However, I have two small suggestions. When you convert from seconds to decimals of a minute, I believe you should round to the hundredth (two places) only, which makes benchmarks measured in seconds not as useful. Also, for benchmarks, you should use the NGS "adjusted" benchmarks which are listed to the one hundred thousandth of a second, which is centimeter accuracy. (They use very highly accurate GPSr units). Please see my topics in the General and Benchmark forums regarding how to find and use these benchmarks. Our Legends allow one thousandth of a minute, which means rounding the coords of one of these benchmarks. Go to one of these benchmarks, use some trig to calculate where to place your GPSr in relationship to the benchmark and see your accuracy. For your calculations, go to Markwell's FAQ site to see the distance of one thousandth of a minute in longitude at your latitude. Quote Link to comment
+EScout Posted March 22, 2003 Share Posted March 22, 2003 After posting, I reread your post, and it appears that you are in Canada and talking about Canadian markers. I am sorry, I do not know about these and I thought they were listed to the second only (and no decimals). Quote Link to comment
geoStrider Posted March 27, 2003 Share Posted March 27, 2003 One other factor to consider in the coordinate comparison is to be sure the datum of the benchmark is the same you have the GPSr set to. Veni, Vidi, Cachi ... Quote Link to comment
+SpongeRob Posted March 28, 2003 Share Posted March 28, 2003 quote: Now, with those numbers, why did I get skunked on those two caches this morning???? There is usually more to a cache than just the coordinates. Also, who said that the person hiding the cache had just as accurate readings? -- SpongeRob rwmech@keenpeople.com www.keenpeople.com WPWU826 Cache'n Retrievers Quote Link to comment
+tirediron Posted March 28, 2003 Author Share Posted March 28, 2003 quote:Originally posted by SpongeRob:There is usually more to a cache than just the coordinates. Also, who said that the person hiding the cache had just as accurate readings? Very true Rob, but actually that post should have read: <sarcasm> Now, with those numbers, why did I get skunked on those two caches this morning???? </sarcasm> Quote Link to comment
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