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