[time-nuts] Newbie to Time Nuts; Seeking wisdom, re Hydrogen MASER applications

Mike Cook michael.cook at sfr.fr
Mon Nov 13 04:32:58 EST 2017


> Le 13 nov. 2017 à 01:29, Hal Murray <hmurray at megapathdsl.net> a écrit :
> 
> 
> apolloeme at gmail.com said:
>> prior to my senior project most geodetic surveyors  used a Wooden boxed,
>> marine chronometer, to get sub second UT1 time, or  back then, GMT
> 
> How did you get the data out of the wooden box?
> 
  I have a couple of marine chronometers that have electrical contacts closing once a second. This signal is relayed by wires to terminals on the outside of the box.
  One came from a Tashkent astronomical observatory and is Sidereal time rated, the other is a nautical instrument which would probably have been connected to slave clocks.   
  

"The power of accurate observation is commonly called cynicism by those who have not got it. »
George Bernard Shaw



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