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Nocturnal Geocoin spockske's Nocturnal Geocoin

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Owner:
spockske Send Message to Owner Message this owner
Released:
Wednesday, 08 April 2015
Origin:
Vlaams-Brabant, Belgium
Recently Spotted:
In the hands of the owner.

This is collectible.

Use TB71MEF to reference this item.

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Current Goal

To be exhibited during events at the booth of "GeoCoins for All"

About This Item

Nocturnal Geocoin - bronze

This is a functional nocturnal coin which you can actually use to tell the time during the night and get your latitudinal deviation.

The nocturnal navigational tool stood the test of time. Its purpose is to tell time at night so you can gain a more accurate latitude and longitude reading. The first written evidence of a nocturnal was discovered in the year 1272. It was refined in the 1500s to tell more accurate time and was used well in to the late 1800s and partially used into the early 1900s. Two disadvantages of the Nocturnal is it can only be used at night, and only when the pole star Polaris and either of the dippers are visible. However, it also had a great advantage since it can be used at night when a sundial could not be used. The nocturnal can only be used in the northern hemisphere unless you know how to triangulate the southern axis point and align the correct stars, but the deviation scales can only be used in the northern hemisphere. Using a nocturnal in conjunction with a quadrant will yield a more accurate latitude reading. The use of a planisphere is most helpful to find the correct stars to use.

Even though mechanical clocks have been around for several centuries, they could not keep accurate time on a ship that is pitching and rolling on the ocean waves. When an accurate chronometer good enough to be used at sea was invented and after it was able to be massed produced is when the nocturnal finally became obsolete.

More sophisticated nocturnals also listed tide charts and deviation gauges on its surfaces.

Design: 
The early nocturnals were made of wood and later made in brass. They were approximately 7" to 10" in diameter plus the length of the handle and arm. The large circle, that has the handle attached to it, lists the days and months. The center rotating disk has the time. The arm has a notch on one edge of it so you know to use the opposite edge for lining it up with the stars. Both the center circle and arm rotate on an arbor which is hollowed out to use it as a sight.

The Nocturnal Geocoin™ is trackable on Geocaching.com and has its own icon. It is available in both antique silver and antique bronze, and is specially designed to be held comfortably between your fingers when taking a reading.

Go to CompassRoseGeocoin.com for instructions on how to use this coin.

  • 3" diameter (not including the arm)
  • 11mm thick!
  • 3 permanently attached moving parts
  • Trackable on Geocaching.com
  • Has its own icon that shows on your profile page in Geocaching.com when you log a find or discovery.

Gallery Images related to spockske's Nocturnal Geocoin

View All 5 Gallery Images

Tracking History () View Map

Discovered It 12/02/2019 EDEDE discovered it   Visit Log

heute mal das Telefon durchstöbert und so ein zwei TBs gefunden die es zu discovern gibt.

Discovered It 12/01/2019 Scalira discovered it   Visit Log

Discovered! Vielen Dank fürs Zeigen und gute Weiterreise!

Discovered It 12/01/2019 GCBuster discovered it   Visit Log

Vielen Dank fürs Zeigen. Ich haben diesen TB sehr bewundert. Gute Weiterreise!

Discovered It 02/12/2019 Kavau-FO discovered it   Visit Log

Thank you for sharing this nice "Nocturnal" Geo-Coin found on your profil.

Discovered It 09/13/2018 Merino discovered it   Visit Log

I found back the memory card of my previous mobile phone, so I took the trouble of retrieving all TB codes I had on there. Some of these I may have logged already.
In any case: thanks for sharing!

Discovered It 09/13/2018 Merino discovered it   Visit Log

I found back the memory card of my previous mobile phone, so I took the trouble of retrieving all TB codes I had on there. Some of these I may have logged already.
In any case: thanks for sharing!

Discovered It 04/21/2018 MICKAELAND discovered it   Visit Log

Découvert lors de l'Évent LGC EVENT 2018 en faisant un peu de blabla, bien intéressante conversation mr spockske 😉

Move To Collection 04/15/2018 spockske moved it to their collection   Visit Log
Retrieve It from a Cache 04/11/2018 spockske retrieved it from Le pays des géants et sa matrice Hainaut, Belgium   Visit Log

Back home!

Dropped Off 03/29/2018 spockske placed it in Le pays des géants et sa matrice Hainaut, Belgium   Visit Log
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