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    I expect that they did understand...

    I expect that they did understand this--estimating forces on the gear is an important part of leading. As is dealing with trade-offs from different sources of risk.

    While the reports suggest that...
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    Lowering a climber or catching a falling climber...

    Lowering a climber or catching a falling climber from a bottom belay have the same ratios of forces:

    Both the belayer and the climber are pulling down on the top anchor so the sum of the forces is...
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    Sometimes it's not that simple--one may not have...

    Sometimes it's not that simple--one may not have enough gear to leave backups at each rapping point.

    Doug
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    Use a tripod and manual control for everything...

    Use a tripod and manual control for everything (focus, aperture, and exposure time)--the automation will not work in the dark.

    For terrestrial night photography, just use the above and:
    * shoot...
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    I use lightweight windblocking fleece gloves...

    I use lightweight windblocking fleece gloves (with leather-like gripping surfaces) to handle the camera in the cold. The dexterity is good and my hands stay warm enough.

    I just put the lenscap in...
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    I've used a DSLR for astrophotography (AP) where...

    I've used a DSLR for astrophotography (AP) where one leaves the camera outside all night, so far down to 4F and have had no problems. By then end of the night all sky-facing surfaces can be covered...
  7. Having dropped a battery or two in the snow while...

    Having dropped a battery or two in the snow while changing them in the dark, I decided to carry at least 2 headlamps. If the first runs out of juice, I have the option of switching to the second or...
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    The advice in this thread is still basically...

    The advice in this thread is still basically sound. A smart charger that charges the cells individually at a moderate rate is best for the cells. (Low charging rates may seem to be gentler but are...
  9. 2 Mt Percival hikers escorted to safety, 26 Oct

    An all too common story:
    Lost the trail on the descent, no lights map or compass, called for help ~6pm. Found and escorted down.
    ...
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    Interesting. There are some simpler (and...

    Interesting.

    There are some simpler (and probably less accurate) estimators in the 3rd edition of Freedom of the Hills (1974).

    It would be more accurate to break the hike into uniform-condition...
  11. One can often find copies of old websites...

    One can often find copies of old websites (including Mohammed's site) at the Internet Archive: https://archive.org/

    Doug
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    Christopher Staff (the Pemi loop trail hiker,...

    Christopher Staff (the Pemi loop trail hiker, missing since Monday) has been found by two hikers around 7:30 this evening. He was sitting on a log, dehydrated but otherwise OK.

    Source: 11pm TV...
  13. A correction: * Didn't have a sat phone, did...

    A correction:
    * Didn't have a sat phone, did have a cellphone.
    * Had a signal and successfully called 911. However, by this time there was someone (without a phone) with me who could have skied...
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    At those altitudes, one is at the edge of...

    At those altitudes, one is at the edge of survival. Even with full acclimatization (which takes ~6 weeks*) only a few can function or survive without supplemental oxygen. Many can barely take care...
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    Also far fewer people to get in the way... ...

    Also far fewer people to get in the way...

    Many of the routes have sections that are single-lane with no passing (such as the region near the Hillary Step).

    Yes the more experienced often help...
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    From what I have read about raingear, the truly...

    From what I have read about raingear, the truly waterproof gear has a rating of 10000mm (IIRC).

    However, it is possible that raingear needs a higher rating than tents--for instance, water...
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    The Dead from the put-in just below Grand Falls...

    The Dead from the put-in just below Grand Falls (below Flagstaff Lake) to the Forks (junction with the Kennebec) is one of my favorite paddles in the north country. (Class 2-3 whitewater depending...
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    This is a possiblity--some streams exhibit...

    This is a possiblity--some streams exhibit "headward erosion". In other words the head of a stream can "move" uphill by erosion. If this headward erosion hits another streambed, the second stream...
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    A GPX file does not contain the information...

    A GPX file does not contain the information required to perform the correction. You need the pseudo-ranges. DGPS corrects errors in the pseudo-ranges before using them to compute the location,...
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    DGPS corrections can also be applied in...

    DGPS corrections can also be applied in post-processing. Some of the trail locations might not have been allowed reception of the DGPS signal preventing real-time corrections. If one records the...
  21. I took a look at Nuun a number of years ago. ...

    I took a look at Nuun a number of years ago. IIRC, it has about twice the concentration of salt as used in my formulation.


    It's a balancing act...


    Pseudo-science in the service of the...
  22. There is a good reason--the Gunks are the same...

    There is a good reason--the Gunks are the same rock formation as Seneca Rocks.

    I hiked in Monongahela many years ago. A very nice area.

    Doug
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    Pemi Lollipop ski trip with Becca M: 28.5 hrs. ...

    Pemi Lollipop ski trip with Becca M: 28.5 hrs. https://www.vftt.org/forums/showthread.php?39621-Pemi-Ski-Loop-in-Less-than-30-Hours-)

    Doug
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    I was at the Marlboro, MA store about 6 weeks ago...

    I was at the Marlboro, MA store about 6 weeks ago and asked about the heath of the chain. They said it is doing well and they are even opening a few new stores. Keeping the rents low seems to be a...
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    One has to set up and break camp down quickly...

    One has to set up and break camp down quickly during polar travel. Otherwise one can get dangerously chilled during the interval between the protection of the tent and the heat generation of motion....
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