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Jaeger-LeCoultre

Nice review! but...

 

But....I am afraid the small sun indication is not rotating as a relative solar time...since I can't find a bean-like gear in movement or any official material tellng that.

The present of sidereal time is to compensate the spining of stars. Since the sky is spining to west and earth is spining to east, the tourbillon have to move faster than mean solar time to catch up all stars.

But if the tourbillon gear trains and sun indication is really governed under solar time....the sky chart will be more accrated than PP did.


btw...I wonder how to adjust this watch....as I never meet a watch with sky chart. Is there a table for sky position for 2 Equinox every year? This message has been edited by Ogygia on 2010-02-23 04:16:06

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