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Anyone ever been to Solis spring?

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Offline Al

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Re: Anyone ever been to Solis spring?
« Reply #30 on: February 16, 2010, 10:54:12 PM »
What's the vertical topographic resolution of a Big Bend map stored in the Garmin?

Al

PS Otherwise known as contour interval . . .


Depends on the map. "BK's Big Bend Topo" has 20' contours.

Some USGS 1:24,000 7.5 minute quads are 40', 20' and there are even some 10 ft intervals in some areas, depending on terrain relief. The USGS Big Bend quads appear to be all 40' intervals.

Garmin 24k topos appear to follow the USGS model of 40' contours for Big Bend 7.5 minute 24k Quads.

On the 100k maps -  1:100,000 the contours are at intervals of 5, 10, 20, or 50 meters, depending on terrain relief. I'm not sure how Garmin produces these, but they are not good for hiking regardless.

Hope this helps.



BK, it was a leading question. Sounds like you're an old Eagle Scout too.  The 7.5' USGS maps I have of Big Bend also have 40' contours.  So a paper map wouldn't have better resolution than the Garmin.  As flat as that area is, a 40' contour can hide a lot of variation in topography.  In addition to not showing significant erosion features, Pete's biggest complaint was he couldn't see that much of the map at a time. That's where a 7.5' map would help.  Having a 20' contour like you would make a BIG difference in either format.

Do you have to move the 60Csx for it's compass to work?

Al

The 60CSX has an electronic magnetic compass that needs to be held level. You do not need to be moving to take a heading. In addition, GPS will take over once you start moving and your heading will be determined from your horizontal displacement. You can adjust the amount of time and the speed at which the electronic compass takes over. This is useful if you are stopped and using the GPS like a handheld compass. The advantage of this system is power management....the electronic compass reduces battery life, and you don't really need it when walking, so it shuts off and uses GPS heading.

And yes Al, I agree that you can't see much of the map at one time, and I always carry a map I can lay out and get "the bigger picture". GPS does not replace a maps.......yet

Thank you, sir!  No more questions . . .

Al

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Offline mule ears

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Re: Anyone ever been to Solis spring?
« Reply #31 on: February 17, 2010, 08:47:34 AM »
What's the vertical topographic resolution of a Big Bend map stored in the Garmin?

Al

PS Otherwise known as contour interval . . .


Depends on the map. "BK's Big Bend Topo" has 20' contours.

Some USGS 1:24,000 7.5 minute quads are 40', 20' and there are even some 10 ft intervals in some areas, depending on terrain relief. The USGS Big Bend quads appear to be all 40' intervals.

Garmin 24k topos appear to follow the USGS model of 40' contours for Big Bend 7.5 minute 24k Quads.

On the 100k maps -  1:100,000 the contours are at intervals of 5, 10, 20, or 50 meters, depending on terrain relief. I'm not sure how Garmin produces these, but they are not good for hiking regardless.

Hope this helps.



BK, it was a leading question. Sounds like you're an old Eagle Scout too.  The 7.5' USGS maps I have of Big Bend also have 40' contours.  So a paper map wouldn't have better resolution than the Garmin.  As flat as that area is, a 40' contour can hide a lot of variation in topography.  In addition to not showing significant erosion features, Pete's biggest complaint was he couldn't see that much of the map at a time. That's where a 7.5' map would help.  Having a 20' contour like you would make a BIG difference in either format.

Do you have to move the 60Csx for it's compass to work?

Al

Another Eagle Scout here.

Most of my Big Bend 7.5" topos are 40' contours but my more recent purchases are 20' even though they are still 1971 generated maps.  Of the ones I have in my collection Grapevine Hills, Sombrero Peak, Castolon and Mariscal Mtn. have 20' intervals.  I don't have Solis but I would suspect it might have 20' intervals too.

Coming in late...I thought i had almost convinced Mule Ears in buying a Garmin, but with what you have said,Al. I think everything went down the drain.... :icon_frown:

 Surely was Operator Error, I ahve never heard of a 60 Csx failing, there is always a first.

Don't give up Homero, I am still mulling some kind of GPS unit over.  :eusa_think:
temperatures exceed 100 degrees F
minimum 1 gallon water per person/day
no shade, no water
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Offline westtex

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Re: Anyone ever been to Solis spring?
« Reply #32 on: February 17, 2010, 03:20:50 PM »
I was at Solis Spring in Feb 2009 and it was nothing more than a mud hole at that time. 

After drinking the Tornillo Creek water for a few days, it has always given me some belly ache. 
resist much, obey little

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Offline mule ears

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Re: Anyone ever been to Solis spring?
« Reply #33 on: February 17, 2010, 05:34:06 PM »
I was at Solis Spring in Feb 2009 and it was nothing more than a mud hole at that time. 

After drinking the Tornillo Creek water for a few days, it has always given me some belly ache. 

Thanks for the update westtex, I knew someone here had to have been out there.
temperatures exceed 100 degrees F
minimum 1 gallon water per person/day
no shade, no water
http://40yearsofwalking.wordpress.com/

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Offline Pedreo233

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Re: Anyone ever been to Solis spring?
« Reply #34 on: February 18, 2010, 01:25:36 AM »
Ok,I am going to have to take more time learning to use my GPS in the open country.  I use it regularly travelling out of town with City Nav NT with few problems.  However, I definitely do not have the off road nav down.  I was making a bee line for the springs and after 2 miles, the compass orientation started going haywire.  Some times it pointed to Mexico as N.  Anyway, right before we hit Fresno again, in that area right before the moonscape, it said to take a 90 degree turn to the south which put us on the wrong side of the stream and the 40-50' deep canyon was more than I cared to take on at that point.  After about a quarter mile, it started to read correctly, but took a long time to stabilize the compass to something I believed.  Unfortunately, I had left my 1:100,000 park topo map on the table in camp.  That was all I would have needed to stay on the right path.

I had a compass in my day pack, but did not think to use it.  The only problem was the GPS was not finding north very quickly...I mean it seemed like minutes to find it.  Maybe I should have turned it off between readings?
 
Homero, I think the GPS Map 60 CSx is worth the money, particularly at todays price, but as BK said, you still need a map to be sure.

Footnote:  It appears that Garmin is discontinuing the NP 24k series.  REI did not have the central US DVD.  I found it on Aircraft Spruce at considerable discount - for anyone that is interested in getting a copy.

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Offline badknees

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Re: Anyone ever been to Solis spring?
« Reply #35 on: February 18, 2010, 08:41:12 AM »
Ok,I am going to have to take more time learning to use my GPS in the open country.  I use it regularly travelling out of town with City Nav NT with few problems.  However, I definitely do not have the off road nav down.  I was making a bee line for the springs and after 2 miles, the compass orientation started going haywire.  Some times it pointed to Mexico as N.  Anyway, right before we hit Fresno again, in that area right before the moonscape, it said to take a 90 degree turn to the south which put us on the wrong side of the stream and the 40-50' deep canyon was more than I cared to take on at that point.  After about a quarter mile, it started to read correctly, but took a long time to stabilize the compass to something I believed.  Unfortunately, I had left my 1:100,000 park topo map on the table in camp.  That was all I would have needed to stay on the right path.

I had a compass in my day pack, but did not think to use it.  The only problem was the GPS was not finding north very quickly...I mean it seemed like minutes to find it.  Maybe I should have turned it off between readings?
 
Homero, I think the GPS Map 60 CSx is worth the money, particularly at todays price, but as BK said, you still need a map to be sure.

Footnote:  It appears that Garmin is discontinuing the NP 24k series.  REI did not have the central US DVD.  I found it on Aircraft Spruce at considerable discount - for anyone that is interested in getting a copy.

Have you, and do you regularly calibrate the electronic compass? In addition, there are some settings for when the electronic compass kicks in. I suspect you were trying to get a bearing without moving and the compass was not active. Look at p 49,50 and 75 in the user manual.


Not all those who wander are lost.
J.R.R. Tolkien

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Offline homerboy2u

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Re: Anyone ever been to Solis spring?
« Reply #36 on: February 18, 2010, 09:41:02 AM »
Homero, I think the GPS Map 60 CSx is worth the money, particularly at todays price, but as BK said, you still need a map to be sure.

 I totally agree, the Garmn 60 Csx is justa tool the helps in your judgement in orienting yourself,the manual clearly states that is not 100% reliable to the inch, you still have to use your maps.

Have you, and do you regularly calibrate the electronic compass? In addition, there are some settings for when the electronic compass kicks in. I suspect you were trying to get a bearing without moving and the compass was not active. Look at p 49,50 and 75 in the user manual.

 Page 50 on your manual..RTM!
« Last Edit: February 18, 2010, 01:41:12 PM by homerboy2u »
Stay thirsty, my friends.

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Offline jeffblaylock

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Re: Anyone ever been to Solis spring?
« Reply #37 on: February 18, 2010, 10:40:31 AM »
I usually keep the electronic compass turned off to extend battery life. As a result, my 60csx uses my movement to calculate compass heading. If I'm standing still, the slight variations in satellite readings cause me to appear to move, and the "compass" adjusts accordingly. In other words, north appears at random locations.

If the compass is off, then "sight and go" will still lead you to a particular waypoint.

Even with a GPS, I still take a topo map. If nothing else, it gives me "eyes" beyond the GPS' tiny screen.
Jeff Blaylock
Austin, Texas

"We'll be back, someday soon. We will return, someday, and when we do the gritty
splendor and the complicated grandeur of Big Bend will still be here. Waiting for us."--Ed Abbey

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Offline Pedreo233

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Re: Anyone ever been to Solis spring?
« Reply #38 on: February 19, 2010, 10:34:43 PM »
Ok,I am going to have to take more time learning to use my GPS in the open country.  I use it regularly travelling out of town with City Nav NT with few problems.  However, I definitely do not have the off road nav down.  I was making a bee line for the springs and after 2 miles, the compass orientation started going haywire.  Some times it pointed to Mexico as N.  Anyway, right before we hit Fresno again, in that area right before the moonscape, it said to take a 90 degree turn to the south which put us on the wrong side of the stream and the 40-50' deep canyon was more than I cared to take on at that point.  After about a quarter mile, it started to read correctly, but took a long time to stabilize the compass to something I believed.  Unfortunately, I had left my 1:100,000 park topo map on the table in camp.  That was all I would have needed to stay on the right path.

I had a compass in my day pack, but did not think to use it.  The only problem was the GPS was not finding north very quickly...I mean it seemed like minutes to find it.  Maybe I should have turned it off between readings?
 
Homero, I think the GPS Map 60 CSx is worth the money, particularly at todays price, but as BK said, you still need a map to be sure.

Footnote:  It appears that Garmin is discontinuing the NP 24k series.  REI did not have the central US DVD.  I found it on Aircraft Spruce at considerable discount - for anyone that is interested in getting a copy.

Have you, and do you regularly calibrate the electronic compass? In addition, there are some settings for when the electronic compass kicks in. I suspect you were trying to get a bearing without moving and the compass was not active. Look at p 49,50 and 75 in the user manual.



Thanks for the manual references, BK.  I did calibrate the compass the day before.  I think JB hit the nail on the head.

 


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