Excellent pass for Delphi-C3/DO-64 over VK
Hi all,
Just had an excellent pass for this satellite and managed to capture and upload 550 packets of telemetry to their servers.
It was cool to watch the data change as the satellite passed over and to see things like the massive difference in temps between sensors on the satellite such as +35degC on one and -68degC on the other !
cheers
Tim
Hi Tim,
great to hear! by the way, the -68 degree reading is a false reading, because that sensor is not powered since that radio is off. The other one is ok, reading the PA temperature of the active radio, which starts out at approx 5 degrees after switch on, and stabilizes at these "high" temperatures once the craft is close to eclipse when over your part of the world hi. You may want to look at the Thin Film Solar Cell payload IV (current vs voltage) curves by going to options --> show IV curves, since this payload also includes temperature sensors, on the end of each solar panel. Temperatures here show quite some extremes from time to time. These IV curves and temperatures will however only be shown when at least one of the MEBO's (Measurement Boards) shows supply current other than 0 in the MEBO fields in RASCAL (meaning that it is on), and when the satellite's attitude is such that the cells are illuminated.
73 on behalf of the Delfi-C3 team,
Wouter Jan Ubbels
On Mon, Jun 23, 2008 at 1:41 AM, Tim Tuck tim.tuck@penrith.net wrote:
Hi all,
Just had an excellent pass for this satellite and managed to capture and upload 550 packets of telemetry to their servers.
It was cool to watch the data change as the satellite passed over and to see things like the massive difference in temps between sensors on the satellite such as +35degC on one and -68degC on the other !
cheers
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hi Tim,
Thanks for sending in those packets! We are still receiving packets from all over the world and it's great to see how everyone is still making an effort to receive data for us!
The reading you saw of -68 degrees on RAP1 is a spurious one, as this radio AND the PA temperature sensor is switched off at the moment. Still you can see the difference between the On Board Computer (OBC) and the PA of RAP2. The computer is usually around freezing point while the PA is warmed up and around 25 to 35 degrees as you observed.
Thanks for listening to Delfi-C3!
Wouter Weggelaar PA3WEG Delfi-C3 Team member
On Mon, Jun 23, 2008 at 1:41 AM, Tim Tuck tim.tuck@penrith.net wrote:
Hi all,
Just had an excellent pass for this satellite and managed to capture and upload 550 packets of telemetry to their servers.
It was cool to watch the data change as the satellite passed over and to see things like the massive difference in temps between sensors on the satellite such as +35degC on one and -68degC on the other !
cheers
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Tim Tuck -
Wouter Jan Ubbels -
wouter weggelaar