[OZAPRS] Delayed traffic ?

Wed Jan 16 19:51:43 EST 2008

Pretty spectacular photographs ..

Andrew ...

----- Original Message ----- 
From: "Terry Neumann" <tfneumann at internode.on.net>
To: <vk4tec at people.net.au>; "VK / ZL APRS Users" <ozaprs at aprs.net.au>
Sent: Wednesday, January 16, 2008 7:12 PM
Subject: Re: [OZAPRS] Delayed traffic ?

> Gentlemens (and ladies if there be any),
>
> I've been doing some visual obs on the ISS in the past three days or so.

> It seems to be about 2-3 minutes behind what my tracking programs claim.
>
> The keps in use are the latest weekly's from AMSAT, but both
InstantTrack 
> and Orbitron give acquisition and pass details a few minutes ahead of
what 
> I actually see outside of the back door.    Both nights I was on the
point 
> of giving up only to see it appearing low on the south-western sky -
well 
> behind where I expected it to be.
>
> My computer clock is fairly close to the mark; I've been using an
on-line 
> source to update, and a recent check on WWV suggests that it is pretty 
> well on the mark.. It could be - and almost certainly is - the case that

> there is a problem here with keps or time or something, but it's not 
> obvious at the moment.  However if my obs are correct, it may be a
factor 
> in what Andrew is seeing.
> BTW last night ISS was really spectacular in a pass very close to
overhead 
> at my QTH. :-)
>
> And for the space minded here is a link sent to me by gliding friends 
> earlier today - I suspect that some of them are on the ISS.  I initially

> thought one of the pics just might be taken over New Zealand, but it 
> doesn't completely agree with my reading of the maps here.    Amazing 
> stuff however .... 8-)
>
> http://www.texasjim.com/NASApix/NASA%20pix.htm
>
> FWIW
> 73
> Terry
> VK5ATN
>
> Andrew Rich wrote:
>
>>This is the first time I have seen this, the other day i was looking at 
>>logs
>>of ISS.
>>
>>I had 3 independant tracking systems telling me that ISS was over water 
>>out
>>in an ocean no where near me.
>>
>>And yet i saw some data logged from the IS that was out of sink.
>>
>>So I thought it may be a station doing a replay but there was more than 
>>one
>>station involved.
>>
>>ISS went down below the horizon at 19:14 local, and then while I was 
>>getting
>>ready for the next pass, I noticed this "extra" data came in from the
APRS
>>IS.
>>
>>The data in this log, comes from a perl script that writes live to a
file.
>>
>>I know the ISS times are correct, because I heard the satellite. ie the 
>>sat
>>times are correct.
>>
>>
>>14/01/2008 20:46:05
>>VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:T#268,001,001,015,011,147,11
1111
>>11,1111,0
>>14/01/2008 20:45:55
>>VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAO,VK4TEC:T#267,001,001,016,012,124,1111
1111
>>,1111,0
>>14/01/2008 20:45:53 RS0ISS-4>CQ,SGATE,qAO,VK4TEC:Welcome to RS0ISS's 
>>message
>>board
>>14/01/2008 20:45:51 RS0ISS-11>VK2MAL,qAO,VK4TEC: <>:
>>14/01/2008 20:45:39 RS0ISS-11>VK2MAL,qAO,VK4TEC: <>:
>>14/01/2008 20:45:24
>>VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:=2734.44S/15306.20E`ISS
Ground
>>station
>>14/01/2008 20:45:15
>>VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:T#263,001,001,015,010,125,11
1111
>>11,1111,0
>>
>>14/01/2008 20:40:25 ------------------------- VK4TEC: Satellite ISS up
at
>>this time
>>
>>14/01/2008 20:06:06
>>VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#721,001,000,015,011,099,
1111
>>1111,1111,0
>>14/01/2008 20:05:12
>>VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#714,001,001,015,012,165,
1111
>>1111,1111,0
>>14/01/2008 20:04:26
>>VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#709,000,001,015,011,144,
1111
>>1111,1111,0
>>14/01/2008 20:04:19
>>VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#708,001,000,015,011,122,
1111
>>1111,1111,0
>>14/01/2008 20:03:52
>>VK4TEC-6>BEACON,RS0ISS-4*,WIDE,qAo,VK3JTM-5:T#705,001,001,014,010,126,11
1111
>>11,1111,0
>>14/01/2008 20:02:13
>>VK4TEC-6>BEACON,RS0ISS-4,ZL3GR*,qAr,ZL1AMW-14:T#699,001,000,015,012,132,
1111
>>1111,1111,0
>>
>>14/01/2008 19:14:58 ------------------------- VK4TEC: Satellite ISS down

>>at
>>this time
>>
>>
>>
>>
>>------------------------------------------------------------------------
----
>>Andrew Rich VK4TEC
>>vk4tec at people.net.au
>>http://www.tech-software.net
>>
>>
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>>
>>
>>
>
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