[APBeta] APBeta Digest, Vol 15, Issue 1

[Tony Barry]

FYI

Silicon Chip Magazine has a project for a GPS unit that should be good  
to about 250msec of real time.

www.silchip.com.au

(This is an unsolicited advert!)

Regards,
Tony Barry

(who is trying to track the ISS on an LX90 and finding it **very**  
hard).


On 04/07/2009, at 11:52 PM, Paul Rodman wrote:

>
> On Jul 3, 2009, at 2:10 AM, Peter B wrote:
>
>> Thanks Paul - now I get it.  AP adjusts the location data based on  
>> the GPS info but can only use the computer clock time.
>>
>> Have you considered making it work like EQMOD where it looks at the  
>> difference between the GPS time and the computer time and sets an  
>> offset to correct the time in AP?
>
> I could set the clock offset for the site, but I don't see this as  
> of major importance. If your time is off by a few seconds, or even  
> minutes, it makes very little difference to anything. Not even the  
> moon travels very far in the sky in that time. Perhaps if you're  
> timing occultations then time setting is important, but then AP  
> doesn't (currently) support that. Also, unless you have a special  
> kind of GPS unit, the times you can get from it via its serial port  
> are only accurate to a few seconds anyway.
>
> Paul R.
>
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