Bad start
#1
Posted 25 March 2012 - 03:25 PM
#2
Posted 25 March 2012 - 03:48 PM
GMHeyes, on 25 March 2012 - 03:25 PM, said:
No, sorry.
Bear in mind that caches come in various sizes, denoted at the top of the cache page, from micro to large, try sticking with larger caches until you get the hang of it, larger ones are also more likely to have swaps/treasure.
They also come with levels of terrain and difficulty, again shown at the top of the cache page. Obviuously caches with a low difficulty should be easier to find so stick to D 1 or 1.5 to start with.
If there's an encrypted hint on the cache page, use it.
It can also be useful to read some recent logs from other cachers as there are often clues in there too, and try to go for something that's been found recently so you've some confidence that it's still there.
Edit to add, what are you using for a GPS? Some of the older iPhones had pretty poor GPS accuracy. If you're using a dedicated handheld GPS make sure it's set to the WGS84 datum , otherwise it will be about 100 feet out.
This post has been edited by MartyBartfast: 25 March 2012 - 03:51 PM
#3
Posted 25 March 2012 - 04:50 PM
Try triangulation.
Walk past where you think ground zero is and make a mental note of the position.
Repeat from as many directions as you can.
If the arrow won't deliver you to gz. Change the screen view on your GPSr until you have a dynamic coordinate display. Move around until that display matches the figures on the cache page if seeking a Trad or your calculated coordinates if a Multi or Puzzle.
Good luck. What area are you from? Including such detail might get you local help.
#4
Posted 25 March 2012 - 10:18 PM
#5
Posted 26 March 2012 - 01:09 AM
#6
Posted 26 March 2012 - 02:08 AM
It will take time to get used to what you are looking for, "Cacher's Eye"! once you've found a few you'll figure that within the radius specified by the GPS location there can only be so many places to hide a cache, and you get used to seeing things which are out of place, I mean big flat rocks aren't normally at the bottom of fence posts
Also don't trust the GPS location too much, you need to look within a radius of *at least* 5 metres.
#7
Posted 26 March 2012 - 02:22 AM
#8
Posted 26 March 2012 - 07:04 AM
#9
Posted 26 March 2012 - 07:18 AM
GMHeyes, on 26 March 2012 - 07:04 AM, said:
That is certainly one of your problems. You must use WGS84 datum NOT OSGB. The wrong datum can put you several hundred yards from the correct position. In the cases you mention you could have been at the wrong end of the right raillings or the end of the wrong railings altogether. In the other case there could be lots of Ivy covered trees with V's within a much smaller radius than the error caused by the wrong datum.
I have just done a search and there is an event close to you near Hazel grove on 24th April GC3BZZM. Why not go along to that and chat to other cachers in your area who will be glad to help you.
#10
Posted 26 March 2012 - 07:36 AM
@GMHeyes
GC1AAFC - the person before you had a DNF also. Note that it's listed as a small container, so could be the size of a plastic film cannister. They can be tricky to locate.
GC1QEH7 - a few DNFs here but others say they found it easily, and although it's also described as 'small' it's a small clip box. One cacher says it's 'well camouflaged' so maybe you're just not seeing it. As it's close to you it's probably worth another go (note one cacher ended up the wrong side of the stream, could you have done the same?)
In all this bear in mind your GPS accuracy is around +/- 5 metres ... so if not in the first tree you check slowly widen your search.
This post has been edited by sussamb: 26 March 2012 - 07:44 AM
#11
Posted 26 March 2012 - 07:38 AM
A couple of tips that may help you with getting your 1st find.
When searching on geocaching.com scroll to the bottom of the page and there is a tickbox to highlight "beginner caches" these usually have a low terrain / difficulty rating.
It will also help if you choose a large cache, I see the one you mentioned is only a step up from a micro, this makes it harder to spot and also you will not find much 'treasure' in them for your son.
Also check the logs, if there have been a lot of dnf's then do not go!
It also helps if the cache has been found recently.
Good luck with your cacheing!
#12
Posted 26 March 2012 - 07:39 AM
#13
Posted 26 March 2012 - 07:48 AM
#14
Posted 26 March 2012 - 07:56 AM
#15
Posted 26 March 2012 - 08:08 AM
Of course if the owner's co-ordinates are wrong (and they'll be subject to errors just the same as you) then this won't help much.
If nothing else you might be able to pick out caches that have few hiding places.
#16
Posted 26 March 2012 - 08:23 AM
#17
Posted 26 March 2012 - 08:34 AM
I'm going to have another try tomorrow afternoon for the one in the park near me (GC1QEH7), I'm currently mapping it for OSM so I can kill 2 birds with one stone.
And thanks everyone for your continued hints and tips!
#18
Posted 26 March 2012 - 10:25 AM
sussamb, on 26 March 2012 - 07:36 AM, said:
When you refer to lat/long, you need to know which datum it is referenced to, because there are 100 different datums. To the uninitiated this may seem daft, but there are good historical reasons for it. The earth is an irregular shape, and a long time ago, cartographers used a model of the earth that best fitted their locality. It didn't matter if it was a different model in the UK to the one they used in Japan, for example; it was more important that the one used here was a good fit here. The datum used in the UK when the Ordnance Survey carried out their survey was OSGB.
With a global system such an arrangement is unsatisfactory. GPS uses WGS84, is a less good fit in the UK than is OSGB, but which is a better compromise globally. Because the GPS uses WGS84, and geocaching uses the GPS, use of the WGS84 datum is implicit.
In the UK, the difference between locations having the same co-ordinates but using OSGB and WGS84 datums ranges from 0 to about 200 metres, depending on where you are. If you have a receiver that shows you the same co-ordinates using both datums at all locations in the UK it is faulty.
We now change to a slightly different subject. Most GPSrs allow you to enter co-ordinates in either lat/long or as an OS National Grid reference. How they handle input and display of grid refs might be device specific, but because OS grid refs implicitly are based on the OSGB datum I would hope most modern ones take that into account irrespective of the datum setting. But if you are inputting and displaying lat/long, you should have the unit set to WGS84 datum.
Finally, the OS grid ref conversion used by Groundspeak is a very poor one, typically 5 or 6 metres in error. I would advise setting the unit to WGS84 and using the lat/long published on the cache page.
Rgds, Andy
#19
Posted 26 March 2012 - 11:07 AM
If you download coords the GPS will translate them as appropriate without any input from you. You're not relying on the Groundspeak conversion. My experience seems to indicate the Garmin conversion (which is the important one) is pretty much spot on as I've never been able to detect any difference, nor have I ever found myself more than a few metres from caches.
If I was manually inputting the lat/long published on the cache page then I would use WGS84
#20
Posted 26 March 2012 - 11:10 AM
Good luck
#21
Posted 26 March 2012 - 12:16 PM
sussamb, on 26 March 2012 - 11:07 AM, said:
Anything else needs a greater degree of understanding, may be device dependant and more prone to error.
And when they do their first multi or puzzle, any other method will end in tears
Rgds, Andy
#22
Posted 26 March 2012 - 01:48 PM
What we have decided to do if the bad luck continues is for us to hide one for him
#23
Posted 26 March 2012 - 02:21 PM
GMHeyes, on 26 March 2012 - 01:48 PM, said:
The lat/long figures on the cache page are more accurate than the BNG figures. There are no potential device dependent ambiguities. 99.9% of multi-cache or a puzzle caches will provide child waypoints in WGS84 lat/long but not in BNG, and will require that your workings out are in WGS84 lat/long. If you set a cache you are required to submit all waypoints in WGS84 lat/long. If you go abroad you will be working in WGS84 lat/long.
Rgds, Andy
#24
Posted 26 March 2012 - 11:31 PM
#25
Posted 27 March 2012 - 12:16 AM
#26
Posted 27 March 2012 - 12:42 AM
Mark+Karen, on 26 March 2012 - 11:31 PM, said:
When I first started I used to use OSGB too because I recognised the OS grid and felt comfortable with it, I had an experience similar to you which made me bite the bullet and switch to WGS84/decimal minutes, it only took a very short while to get familiar with it and in actual fact I find it much easier for on the ground navigation and estimating distance & direction from a set of references now.
#27
Posted 27 March 2012 - 03:45 AM
hddd.ddddd
hddd mm.mmm'
hddd mm'ss.s"
When things start getting too complicated it sort of starts taking the fun out of things
#29
Posted 27 March 2012 - 04:24 AM
GMHeyes, on 27 March 2012 - 03:45 AM, said:
hddd.ddddd
hddd mm.mmm'
hddd mm'ss.s"
When things start getting too complicated it sort of starts taking the fun out of things
It's not complicated, but as with any activity, there is a learning curve. Geocaching isn't hiking, and being an experienced hiker doesn't mean you are an experienced geocacher. But it doesn't take long to pick it up, and the learning is fun if you go about it the right way, e.g. you follow the suggestions here about tackling the larger, easier and recently found ones first.
And using WGS84 lat/ long is the least complicated way to approach geocaching co-ordinates, because if you use OS grid references you may be "fighting the system" to one degree or another unless you understand co-ordinate systems, datums and projections. If you just use WGS84 lat/long you don't need to understand them at all.
Rgds, Andy
#30
Posted 27 March 2012 - 04:43 AM
As you say, it should be fun ... crack on and enjoy life, your first cache will come soon enough
#31
Posted 27 March 2012 - 05:11 AM
sussamb, on 27 March 2012 - 04:43 AM, said:
... Like you all my maps etc use BNG and that's what I'll continue to use. The accuracy issue really is a red herring unless, as I mentioned earlier, you're manually inputting coords, which I don't.
I don't know what you want, but it's clear what Graham want's out of caching right now, he wants to be able to find those illusive caches which is why he came here asking for help! Using the wrong datum is one thing that's caused LOADS of people to be in the wrong place in the past, and changing datums is going to immediately eliminate one potential problem.
And FWIW OS maps also use ddd mm.mmm too, although I don't know whether those markings are also based on the OSGB datum or whether they're based on WGS84.
#32
Posted 27 March 2012 - 05:17 AM
As he has already pointed out, he has tried changing datums and his GPS takes him to exactly the same point, which is what it will do.
#33
Posted 27 March 2012 - 06:06 AM
sussamb, on 27 March 2012 - 05:17 AM, said:
As he has already pointed out, he has tried changing datums and his GPS takes him to exactly the same point, which is what it will do.
This issue of how devices handle the datum in connection with OS grid refs is dependent on both the device AND how you are using it. Using WGS84 lat/long is the only way that is guaranteed to be OK across all devices and all methods of reading and writing data. As a new user it is best to simplify things, and this is one very easy way to do that by eliminating one potential problem.
Rgds, Andy
This post has been edited by Amberel: 27 March 2012 - 06:06 AM
#34
Posted 27 March 2012 - 06:33 AM
Think I've made my point enough times, I'll leave it to the OP to decide rather than continue to debate it.
#35
Posted 27 March 2012 - 06:40 AM
Coordinates and map datums
"If you end up with the coordinates on one format and the map datum on the other you'll find your GPS is incorrect by about 300 feet (100 meters)."
MrsB
This post has been edited by The Blorenges: 27 March 2012 - 06:41 AM
#36
Posted 27 March 2012 - 07:00 AM
sussamb, on 27 March 2012 - 06:33 AM, said:
The problem manifests itself depending on the device you have and how you use it. If it affects you, it is a real problem.
We don't know if it affects the OP or not - we think it possibly doesn't affect them all the time, but it is unlikely to be intuitive to an inexperienced user that it may behave differently if used in different ways.
When starting out, eliminate it as a potential problem. Once they have gained some confidence and understanding of the system, they can revisit the subject if they wish.
Rgds, Andy
#37
Posted 27 March 2012 - 07:23 AM
A pdf is here:
http://www.ordnances...tion/index.html
under the heading "Where on earth"
#38
Posted 27 March 2012 - 10:58 PM
Back to finding a Cache. I notice this morning you've still not managed to log a find. I've had a look at the cache pages your way and I would sayGC1QEJ1 looks about the easiest. Have a look at the gallery of photos on the page as well as the hint, they'll show the size of the container and roughly where it is. Also if you can, copy and paste the cache coordinates from the cache page into Google Maps, go to street view, you can then see it must be in the narrow hedge. Satellite or Earth view points to the largest tree though that might not be exact.
Hope that will help you.It won't be long before you're both experts!
Regards
Bernard
#39
Posted 28 March 2012 - 03:53 PM
BCNorwich, on 27 March 2012 - 10:58 PM, said:
Back to finding a Cache. I notice this morning you've still not managed to log a find. I've had a look at the cache pages your way and I would sayGC1QEJ1 looks about the easiest. Have a look at the gallery of photos on the page as well as the hint, they'll show the size of the container and roughly where it is. Also if you can, copy and paste the cache coordinates from the cache page into Google Maps, go to street view, you can then see it must be in the narrow hedge. Satellite or Earth view points to the largest tree though that might not be exact.
Hope that will help you.It won't be long before you're both experts!
Regards
Bernard
Thanks for your help, we will go and have a look on Saturday morning, I will let you know how we got on
#40
Posted 28 March 2012 - 11:14 PM
#41
Posted 29 March 2012 - 09:43 AM
We are on a mission Saturday morning, there are another three within a couple of miles and hopefully we should find at least one, we are not going home until we have. The main thing is he is looking forward to going and to be honest so are me and the missus - happy days
#42
Posted 30 March 2012 - 09:44 AM
Your terrain choice is fine, and I'd recommend looking for medium to large-sized containers, not least because they're more likely to contain swaps for your son. And if you have the chance to search for rural caches fitting these criteria, then it is more likely to offer you peace and quiet to hunt than something in an urban setting.
Best of luck.
#43
Posted 30 March 2012 - 01:50 PM
Original A1, on 30 March 2012 - 09:44 AM, said:
Your terrain choice is fine, and I'd recommend looking for medium to large-sized containers, not least because they're more likely to contain swaps for your son. And if you have the chance to search for rural caches fitting these criteria, then it is more likely to offer you peace and quiet to hunt than something in an urban setting.
Best of luck.
Thank you for your advice, we are out on the hunt tomorrow morning, I will post the results here
#44
Posted 11 April 2012 - 07:53 AM
One question, I uploaded a gallery image, I cant for the life of me find anywhere to edit or remove this image if I so wish, I take it you can?
#45
Posted 11 April 2012 - 08:13 AM
If you want to delete a picture, go to the cache page, under your log click the "View/Edit Log/Images" link in the bottom right; then on the next page click the "Edit Image" link above the picture; then on the next page click the waste bin icon "Delete Image".
Now you've got the hang of it on to the next cache!
#49
Posted 11 April 2012 - 11:42 AM

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