Date   

Re: Missing segments - August 25 and 26

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@yahoogroups.com, Robert Moore <rsmoore@l...> wrote:
me too

Robert
Thanks all. We will need to keep an eye on this.

Cheers,
David


Re: Missing segments - August 25 and 26

Robert Moore
 

me too

Robert


--------------- reply ----------------
Is it just me, or did everyone miss some complete HRIT scans on
those two days:

Aug 25
Scan: 1500 2100

Aug 26
Scan: 0300 0900 1500

Seems to be something awfully systematic in those numbers! By the
way you can get a report by selecting Tools, Missing segments report
with the MSG Data Manager.

Cheers,
David


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Professor Robert Moore,
Department of Sociology, Social Policy and Social Work Studies,
University of Liverpool.


Re: Missing segments - August 25 and 26

John Willis <john@...>
 

David,

I found the same sections missing - we shall to see what today brings.

John

----- Original Message -----
From: David Taylor
To: MSG-1@yahoogroups.com
Sent: Wednesday, August 27, 2003 11:16 AM
Subject: [MSG-1] Missing segments - August 25 and 26


Is it just me, or did everyone miss some complete HRIT scans on
those two days:

Aug 25
Scan: 1500 2100

Aug 26
Scan: 0300 0900 1500

Seems to be something awfully systematic in those numbers! By the
way you can get a report by selecting Tools, Missing segments report
with the MSG Data Manager.

Cheers,
David



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MSG-1-unsubscribe@yahoogroups.com



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Re: Missing segments - August 25 and 26

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "David Taylor" <david-taylor@blueyonder.co.uk>
To: <MSG-1@yahoogroups.com>
Sent: Wednesday, August 27, 2003 11:16 AM
Subject: [MSG-1] Missing segments - August 25 and 26


Is it just me, or did everyone miss some complete HRIT scans on
those two days:

Aug 25
Scan: 1500 2100

Aug 26
Scan: 0300 0900 1500

Seems to be something awfully systematic in those numbers! By the
way you can get a report by selecting Tools, Missing segments report
with the MSG Data Manager.

Cheers,
David
David,

Sorry can't help with Aug 25, or 03.00 Aug 26th.
09.00 agreed and 15.00 (and others around that time) also agreed and
referred to in the 'News' message albeit somebody dated it 16/08/03 instead
of 26/08/03 !

Hope that helps a little.

Douglas.


Re: MSG-1 and MET7 thoughts

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "Luca Bertagnolio" <lucaberta@yahoo.com>
To: <MSG-1@yahoogroups.com>
Sent: Wednesday, August 27, 2003 11:03 AM
Subject: [MSG-1] MSG-1 and MET7 thoughts


Hi,

I was just wondering, since the direct downlink of the data from MSG-
1 will not be possible, what would prevent Eumetsat from positioning
MSG-1 close by 0 degrees, let's say 0.5E, and run the operational
service from that position?

Doing that would enable a longer transition from the analog MET7
broadcasts, which are received by a very large number of stations,
keeping MET7 at 0 degrees, while MET8 would already be operational
with almost the same coverage.

Of course I am only talking about technical matters, not taking into
consideration agreements for orbital slots and things like this.

Does anyone know how the transition from analog WEFAX to the new
format is handled? I would not be surprised to see quite a few
protests when MET7 will start to drift towards 10W...

Bye, Luca
Hello Luca

Meteosat 7 is not going to be moved. It will remain at 0� until at least
the end of 2005. MSG-1 will be moved to approx 3-4�W, subject to final
Eumetsat Council approval. This is possible because there will be no
direct dissemination from MSG-1. and hence no co-interference.
At that new position images corrected to 0� (as they are now) will show less
interpolation than at present. Seems a good compromise.

Regards
Douglas.


Missing segments - August 25 and 26

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Is it just me, or did everyone miss some complete HRIT scans on
those two days:

Aug 25
Scan: 1500 2100

Aug 26
Scan: 0300 0900 1500

Seems to be something awfully systematic in those numbers! By the
way you can get a report by selecting Tools, Missing segments report
with the MSG Data Manager.

Cheers,
David


MSG-1 and MET7 thoughts

Luca Bertagnolio <lucaberta@...>
 

Hi,

I was just wondering, since the direct downlink of the data from MSG-
1 will not be possible, what would prevent Eumetsat from positioning
MSG-1 close by 0 degrees, let's say 0.5E, and run the operational
service from that position?

Doing that would enable a longer transition from the analog MET7
broadcasts, which are received by a very large number of stations,
keeping MET7 at 0 degrees, while MET8 would already be operational
with almost the same coverage.

Of course I am only talking about technical matters, not taking into
consideration agreements for orbital slots and things like this.

Does anyone know how the transition from analog WEFAX to the new
format is handled? I would not be surprised to see quite a few
protests when MET7 will start to drift towards 10W...

Bye, Luca


Re: Eclipse periods

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "David Taylor" <david-taylor@blueyonder.co.uk>
To: <MSG-1@yahoogroups.com>
Sent: Monday, August 25, 2003 8:37 AM
Subject: [MSG-1] Eclipse periods


Will MSG-1 have eclipse periods like other geostationary satellites,
when there is not enough power to keep the electronics fully
running? I am presuming so, but have seen no announcement as yet.
I also asusme that at some point there will be periods where the
imager will be switched off to avoid looking at the sun.

I see this will start soon on GOES and Meteosat 7.

Cheers,
David
Interesting point, David. There is nothing specific in any of the technical
documents (Particularly 07 and 08). MSG's power demand (600W) is 3 times
that of its predecessors but still has an increased life span of 7 years.
There is a reference to on-board batteries for eclipse purposes but I would
think that it is to ensure power for its own housekeeping etc. Having said
that there is no input/output dissemination now so the power requirements
must be less.
Will be interesting to see what happens.

Douglas.


Eclipse periods

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Will MSG-1 have eclipse periods like other geostationary satellites,
when there is not enough power to keep the electronics fully
running? I am presuming so, but have seen no announcement as yet.
I also asusme that at some point there will be periods where the
imager will be switched off to avoid looking at the sun.

I see this will start soon on GOES and Meteosat 7.

Cheers,
David


Re: retention of settings

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@yahoogroups.com, Lawrence <lawrence@a...> wrote:
I notice that after closing down MSG DM, settings such as histogram
equalise are not retained. I suspect that I tend to use the same
settings for most channels - could we save these at close down?

regards

Lawrence
This is off-topic - please take this to the SatSignal group.

Thanks,
David


Re: channel-4

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@yahoogroups.com, Lawrence <lawrence@a...> wrote:
I am finding that when channel-4 (infra-red) is dropped into GSS-
4, it
is being interpreted as a visible channel. My settings out
somewhere?

Lawrence
This is off-topic - please take this to the SatSignal group.

Thanks,
David


retention of settings

Lawrence <lawrence@...>
 

I notice that after closing down MSG DM, settings such as histogram
equalise are not retained. I suspect that I tend to use the same
settings for most channels - could we save these at close down?

regards

Lawrence


New file uploaded to MSG-1

MSG-1@...
 

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the MSG-1
group.

File : /200308200815-msg-ch12nFC.jpg
Uploaded by : johnbwillisuk <john@leesfield.fsnet.co.uk>
Description : Eastern Europe taken on a rare occaision when Eumetsat transmitted the eastern segment. Captured with MGM and processed on GSS4. 1.3MB.

You can access this file at the URL

http://groups.yahoo.com/group/MSG-1/files/200308200815-msg-ch12nFC.jpg

To learn more about file sharing for your group, please visit

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Regards,

johnbwillisuk <john@leesfield.fsnet.co.uk>


channel-4

Lawrence <lawrence@...>
 

I am finding that when channel-4 (infra-red) is dropped into GSS-4, it
is being interpreted as a visible channel. My settings out somewhere?

Lawrence


Re: HRV segment positions - discussion topic

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "David Taylor" <david-taylor@blueyonder.co.uk>
To: <MSG-1@yahoogroups.com>
Sent: Friday, August 22, 2003 10:56 AM
Subject: [MSG-1] HRV segment positions - discussion topic


Given the ability of the HRV scanner to look at two different
windows during its scan - with separate east-west starting points
for the upper and lower segments - how would you like to see the
scan managed?

- tracking the sun
- fixed on zero degrees longitude
- fixed on Europe and Africa
- any other ideas?

David
I certainly think Europe is priority No.1. Low sun (early and late) is
excellent for cloud topography etc. so a 6 hour bit in the middle of the day
really is not good enough. One difficulty is the judgement of how the
northern hemisphere will look (in visible) during the winter months although
the appearance of the southern hemisphere over our summer has given some
clues.
Permanent Europe with the lower segment following the sun ? That would
ensure visible images for tropical cyclones in the Madagascar area and of
course the formation of tropical depressions/storms/hurricanes in the
Atlantic.

Douglas.


Re: HRV segment positions - discussion topic

Guy Martin <agm@...>
 

Can we have a (sensible) choice

Guy

----- Original Message -----
From: David Taylor
To: MSG-1@yahoogroups.com
Sent: Friday, August 22, 2003 10:56 AM
Subject: [MSG-1] HRV segment positions - discussion topic


Given the ability of the HRV scanner to look at two different
windows during its scan - with separate east-west starting points
for the upper and lower segments - how would you like to see the
scan managed?

- tracking the sun
- fixed on zero degrees longitude
- fixed on Europe and Africa
- any other ideas?

David


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HRV segment positions - discussion topic

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Given the ability of the HRV scanner to look at two different
windows during its scan - with separate east-west starting points
for the upper and lower segments - how would you like to see the
scan managed?

- tracking the sun
- fixed on zero degrees longitude
- fixed on Europe and Africa
- any other ideas?

David


Re: New group - and some questions

Luca Bertagnolio <lucaberta@...>
 

Lawrence,

I would try to see if a 1.8m dish would be enough to receive MSG-1 in C-band from Atlantic Bird, if I were you. Just pure curiosity, as I think that the data is an exact bit dump of the HotBird data.

Actually, I am quite convinced that the Fucino uplink station in Italy receives HotBird, dissects the DVB data and then feeds it up to Atlantic Bird, as simple as that. No need to get into the weeds of the DVB payload, just copy bits!

Bye, Luca

--- In MSG-1@yahoogroups.com, Lawrence <lawrence@a...> wrote:
I set up a PDUS system and operated it until we moved to Southampton. I
am only now beginning to dismantle the 1.8m dish because I cannot now
see it being used.


Re: New group - and some questions

Lawrence <lawrence@...>
 

On Fri, 22 Aug 2003 08:49:01 -0000, you wrote:

Lawrence,

My history with MSG-1 doesn't go back far enough! At the time when
MSG-1 was being planned, were there even any satellites providing
any digital transmissions for domestic users? It was all analog
until quite recently wasn't it? So no cheap Technisat cards! We
should all thank that power amplifier that failed!

Cheers,
David
Essentially, the NOAA polar orbiters provide digital (h.r.p.t.)
telemetry even if (as must be the case) the original optical image is
sampled digitally for coding and transmission. I would think of PDUS as
being all but digital - I think that it is a matter of different
definitions. MSG-1 is simply an 'all-digital' satellite as compared to
Meteosat-7 and earlier sats being a mixture.

I set up a PDUS system and operated it until we moved to Southampton. I
am only now beginning to dismantle the 1.8m dish because I cannot now
see it being used.

regards

Lawrence


Re: New group - and some question

Luca Bertagnolio <lucaberta@...>
 

David,

true enough, for us lucky ones that live in the footprint of Hotbird. I have good result with a 40cm dish (when it's not windy or rainy!)

The C-band setup is definitely much more expensive that the Ku-band one. But again, since most stations are here in Europe, that's a good way to feed the data.

Regarding future DVB data streams, I have no doubts it's going to be like this for a long long while, there will be enough bitching about changing the dish from the old Met7 to the new setup, and by the time we will get the new MSG birds maybe everything will be on the Internet...

Bye, Luca

--- In MSG-1@yahoogroups.com, "David Taylor" <david-taylor@b...> wrote:
My history with MSG-1 doesn't go back far enough! At the time when
MSG-1 was being planned, were there even any satellites providing
any digital transmissions for domestic users? It was all analog
until quite recently wasn't it? So no cheap Technisat cards! We
should all thank that power amplifier that failed!

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