Interested by the NASA's crash landing on the moon, I wanted to watch the event live on my Linux machine. NASA has a few live TV channels, but none seemed to work on Linux. Until I discovered that they use ASX files to view the channels in Windows Media Player - turns out Silverlight (and by consequence Moonlight) also support ASX files. It was just a matter of creating a simple silverlight application referencing the ASX links. And that's what I did!

The bad thing is that our ASX support was a bit broken [1], and I had to fix it. This means that the currently released beta is not able to view the streams, you need to download brand new xpis from here: x86 / x64 (fair warning: these xpis are not tested at all, download at your own risk). Download, restart firefox and you should be able to watch the event live here.

How to Receive NASA Television's Occasional HD Programming

NASA TV Downlink Parameters:
Uplink provider = Americom
Satellite = AMC 6
Transponder = 17C
72 Degrees West
Transmission Format: DVB-S
Downlink Frequency: 4040 MHz
Polarity: Vertical
FEC= 3/4
Data Rate= 36.860 MHz
Symbol Rate = 26.665 Ms/s

NASA TV HD Programming:
HD Program = 105
Video PID = 82
AC-3 Audio PID = 238
MPEG-1 Layer II Audio PID =83

In the continental United States, NASA Television's Public, Education and Media channels are carried by MPEG-2 digital C-band signal on AMC-6, at 72 degrees west longitude, Transponder 17C, 4040 MHz, vertical polarization. They're available in Alaska and Hawaii on an MPEG-2 digital C-band signal accessed via satellite AMC-7, transponder 18C, 137 degrees west longitude, 4060 MHz, vertical polarization. A Digital Video Broadcast compliant Integrated Receiver Decoder is required for reception. Analog NASA TV is no longer available.

Posted by imran Friday, October 9, 2009


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