[time-nuts] Measuring sidereal/solar time? Re: A Leap Second is coming

Ilia Platone info at iliaplatone.com
Fri Dec 30 12:53:28 EST 2016


The problem in radio ground observation can be resolution accuracy, but 
there's also a good transmission into far infrared wavelengths, which 
could require smaller dishes to get stellar images. The problem of far 
IR is the cost of right filters/sensor, which are a bit difficult to find.

Radio objects, on the other hand, can be solved using an interferometer: 
LOFAR interferometers work at frequencies higher than 10MHz, frequencies 
totally transparent to the atmosphere and easily computable even by 
consumer PCs. There is some work done with common PCs using two RTL-SDR 
dongles and two satellite dishes.

see http://www.sbrac.org/files/DTP_RX.pdf

Best Regards,


On 12/30/16 17:18, Brooke Clarke wrote:
> Hi Anders:
> That's something I've thought about for decades using an optical 
> system.  A few  years ago I looked at it again and found that 
> astronomical "seeing" limits the accuracy.  So the accuracy achieved 
> by a spaceborne "Stellar compass" will be much better than a ground 
> based observation.  A radio based observation might work since the 
> atmosphere would not be a factor.
> http://www.prc68.com/I/StellarTime.shtml

Ilia Platone
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Cattolica (RN), Italy
Cell +39 349 1075999

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