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Topics - MoonMan

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Variations of Existing Techniques / crosses in Spain for orientation
« on: March 16, 2015, 01:39:48 PM »
Into my fourth week in Andalucía, I have noticed that crosses on steeples and monuments tend to face east-west,which lets them double as noon marks; I intend to be in the UK by August. Cheers

Emergency & Backup Equipment / Romanian Rescue Rover
« on: December 02, 2013, 11:29:03 AM »

Captions in Romanian, but what you see is what you get.

Moon Rover Technology put to good use?

General Discussion / observation & memory in navigation
« on: October 12, 2013, 12:10:12 AM »

This is how I do it: looking at the map beforehand is part of the process.
PS  Fruitflies can do it, too.

Variations of Existing Techniques / Orientation technique
« on: October 01, 2013, 06:56:02 AM »
When estimating the strike of a land form; be it coast line, river bank , road, railway line, a ridge or valley; this method allows one to quickly sketch, on paper or on the ground, a map of his surrounds, thus making it easier to find his location on a proper map, or to make his own map.  At whatever angle the distant object is to the vertical, so it is to the azimuth of that vertical.The Scene S36.9407,E149.913399

Variations of Existing Techniques / Reckoning Distance:
« on: September 20, 2013, 08:52:22 AM »
On p63 of the Book, there is a description of how to use special binoculars to find the Distance of an object, if one know its height or width [Real Size]
Distance equals Size times 1000 divided by the reading on the scale [Apparent Size].
 In this case,the Binoculars have been made so that the Apparent Distance, relative to the scale, is 1000.
So, using terms Real Distance [D]; Real Size {S}; Apparent Distance [d]; Apparent Size {s}, we have the Ratios D:S::d:s, this becomes D:: Sd:s, or D=Sd/s; thus Real Distance is in inverse proportion to Apparent Size.
If one has no special device for Range Finding. he may go primitive: for Apparent Distance [d] use the length from the eye to the scale that is held by the outstretched arm [usually 10 time the length of the thumb, or the distance between the eyes: see Stereoscopic Ranging p169]. Thus for the scale, hold up a Ruled Edge to the Distant Object, invert the figure as a fraction of the units[1/s], multiply by Real Size{S} & Apparent Distance[d]. The result will be the Real Distance [D].
NOTE: NO measurement is exact, especially with things that move.

New Techniques & Learning / Moon as a Compass
« on: September 15, 2013, 08:21:41 AM »
The Moon, by its Face one knows its Direction

The Moon rises in the East & sets in the West,
 moving through North if one be south of the Tropic of Capricorn, seeming to roll clockwise;
 & moving through South if one be north of the Tropic of Cancer, seeming to roll anticlockwise.

"Let the Part nearest the Horizon have the same Azimuth as the Horizon"_ Cassini

having read that some are uncertain about how Latitude & Longitude work {something that I was taught in Primary School}, I present this simple explanation: the Earth rotates about its axis, the Axis of Rotation, or Longitude, is also known as the Meridian; the Plane of Rotation, or Latitude, is parallel with the Equator, which is the Null point of N or S, the Poles being at 90 degrees thence. E & W are, by International Agreement, measured from the Greenwich Meridian, formerly Teneriffe, Hamburg, Paris, Beijing, or elsewhere. Grid Reference is only of use if one have a map; Navigational Astronomy gives its results in terms of Degrees, Minutes, & Seconds, Knots are the measure of Seconds of Arc traveled one hour. eg: the square root of height in Feet equals Distance seen in Knots, or Minutes of Arc.  A protractor will assist one to visualise what is intended.

New Member Introductions / Greeting from New South Wales.
« on: September 15, 2013, 03:59:44 AM »
Greetings, fellow way-finders: my special interests have been Naked Eye Astronomy & asking myself, How would this have been tackled in the Paleolithic? I do go camping & walking, have seen Glaciers, Volcanoes, Coral Reefs, Rain forest & Savannah. I have learnt several things, which I shall share with you here.  PS I even learnt things from Lyle's book. There is no end to learning.

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