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Solar eclipse update

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Indeed, as expected, FUNcube-1 entered the shadow of the moon around 10:00 Eclpise day _solar panel current_20032015UTC

This is what happened to the solar panel currents, they dropped to almost zero.

solar panel current_normally This what we usually see from our Whole Orbit Data telemetry. Normally we are in the sun for 60 mins and in eclipse for around 30 mins…but not this morning!

Two Million Packets Uploaded to Warehouse

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The FUNcube team are pleased to announce that the data warehouse has received 2M packets from ground stations around the world.

We normally get several people uploading the same packet but in this case it was an individual:

  • Carlos Eavis, G3VHF

The Data Warehouse statistics as of 09:53 GMT on March 15, 2015 were:

Number of registered users: 1529
Number of active users (data received in last two weeks): 193
Number of active users since launch: 818

Number of packets transmitted by satellite since deployment: 8312304 (2.13 GB)
Number of packets uploaded by users before de-duplication: 8539662(2.19 GB)

Number of packets stored in warehouse: 2000000 (512 MB)

Number of packets recovered & stored – Time – Coverage

  • Realtime 2M – 115 days – 25%
  • HiRes 3.9M – 1085 minutes – 19%
  • WOD 0.56M – 385.78 days – 80%

As always, many thanks for all those individuals and groups who are sending data to the warehouse.

73

Dave, G4DPZ

Solar Eclipse – March 20th 2015

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solar eclipseWe have a total solar eclipse coming up on March 20th which tracks across the North Atlantic and eventually covers a lot of the Arctic.
It would seem that this will affect most spacecraft that are in a polar orbit to some extent as, at that sort of time, they would expect to be in sunlight at the time and location.

This website has a good animation of the eclipse http://www.timeanddate.com/eclipse/solar/2015-march-20

On FUNcube-1 we have a good power budget which means that we should be able to maintain our normal autonomous operation schedule for the day but, of course, if the spacecraft does go fully into darkness it should switch autonomously to transponder and low power telemetry.

It will be interesting to see what actually happens and we hope that as many listeners as possible will upload the data they receive between 0740 and 1150 UTC on that morning. Our Whole Orbit Data will show the solar currents, battery voltage and external temps clearly during this period so we should get a clear understanding of the effects on board.

If anyone has some super software that can model the satellite’s track and the expected impact of the solar eclipse it would be great to hear about it!

73 Graham G3VZV

 

FUNcube-2 Update – January 2015

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Limited testing of the FUNcube-2 linear transponder on the UKube-1 spacecraft has been undertaken during the recent holiday period.

This testing has shown that the transponder is able to work effectively and that it is capable of a similar performance to the transponder already operating on FUNcube-1.

AMSAT-UK and the FUNcube team have now submitted a detailed report on the testing to the UK Space Agency, who are the owners and prime operators of the UKube-1 spacecraft. It is expected that a meeting will be held with them late Jan/ early Feb to plan possible future testing and operations.

FUNcube-1’s Birthday

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Hi Folks,

 

It seems amazing to us that FUNcube-1 – AO73, was launched nearly one year ago, in fact at 07:10 UTC on 21 Nov 2013. The very first signals were received by ZS1LS in South Africa at 07:37 UTC and he was even able to upload the resulting data to the Warehouse so the results could be seen immediately.

 

We are extremely  happy to say that, since then, the satellite has been performing very satisfactorily, the battery voltage doesn’t drop below 8 volts, and becomes fully charged within about 7 – 10 minutes after re-entering sunlight from eclipse.

 

Thus, on 21 Nov 2014, we will be celebrating the satellite’s first birthday. To mark the occasion, we will be activating the transponder earlier than normal – late on Thursday 20 Nov 2014, so that it will be available for use during the whole of Friday. So please make as many contacts as possible through the transponder during Friday, FUNcube’s actual birthday. You are invited to make a note of any stations worked on this day, or any other comments on the FUNcube Forum. Please use the existing “FUNcube-1’s Birthday” topic, under the Welcome heading. The URL of the Forum is http://forum.funcube.org.uk/index.php.

 

Please also remember the ’73 on 73′ competition which is kindly being organised by Paul Stoetzer N8HM. See http://amsat-uk.org/2014/08/18/73-on-73-award-announcement/ for more details.

 

We would like to take this opportunity of thanking all of our ‘users’, both those who download  telemetry and forwarding it to the warehouse, and of course, all users of the transponder. This telemetry data is invaluable, both as an educational resource and to enable us to see how the spacecraft systems are performing and surviving. So far we have collected almost 400MB of unique data via stations from all around the world.

 

Of course we are hoping that the satellite continues to function nominally for several  more  years to come even though we may never reach AO7’s record!

 

73s AMSAT-UK and AMSAT-NL

FUNcube Whole Orbit Data available for download

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From the early planning stage of the project we decided that we would make telemetry information available
to end users.

Since deployment the warehouse has displayed the latest data:

Reatime
Whole Orbit
High Precision
Fitter Messages

and of course the upload rankings.

Additionally we have made available small csv files for WOD and HiRes.

Starting today, we will be making all captured WOD available as weekly csv files.

Please see: http://warehouse.funcube.org.uk/wod.html?satelliteId=2 for the link to the
downloads page.

It currently up to 26/6/2014 (32 files)

The files are on average:

9706 lines (expected 10080) ~ 96.3% capture
905 KB

We will play catch up over the next few days and then automate the process.

It it really intended for consumption by an analytical suite such as MatLab, or a DIY one, in a language of your
choosing. However, it can be simply graphed in Excel or Open Office Calc

Feedback would be appreciated.

Enjoy!

73

Dave, G4DPZ

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Many stations, who have their FUNcube Dongles setup to automatically receive telemetry signals from FUNcube-1, will have noticed that they are now also seeing the telemetry from the FUNcube-2 sub-system which is flying on-board the UKube-1 CubeSat.

The FUNcube telemetry transmitter has been enabled on 145.915MHz (+/- Doppler) as part of the commissioning programme for UKube-1 which is presently underway.

UKube-1 in flight configuration in the cleanroom at Clyde Space Ltd (photo courtesy of Steve Greenland)

UKube-1 in flight configuration in the cleanroom at Clyde Space Ltd  (photo courtesy of Steve Greenland)

Whilst the existing FUNcube-1 Dashboard does not correctly display the FUNcube-2 telemetry, it is forwarding the data correctly to the Warehouse and this is greatly appreciated by the team.

We are not yet able to release a FUNcube-2 specific Dashboard as, at present, our developer is on an extended holiday in New Zealand. We are, however, working to provide a fully functional FUNcube-2 page on the Warehouse as soon as possible.

In the meantime please continue to listen and, where you are able, to keep the data flowing to the warehouse – many thanks for your support

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