OSIRIS-Rex has been renamed OSIRIS-APEX. Extract from here:
The OSIRIS-APEX mission will reprise the discoveries of the OSIRIS-REx spacecraft at a second asteroid, Apophis. An hour after Apophis’s dramatic close approach to Earth on April 13, 2029, The OSIRIS-APEX spacecraft will use Earth’s gravity to put itself on a course to rendezvous with the asteroid to begin an 18-month campaign of investigation and discovery.
Thanks to OK9UWU's pipeline for Satdump the recording from yesterday could be demodulated. Unfortunately all that can be seen is a binary stream that contains a blocks of ASCII so it's probably just telemetry.
Today ORX was about 24dB weaker which is about right for it going from 60000km yesterday to 1Mkm when I looked today. There's no chance of getting much from it until it returns again.
Very strong, at about 60,000km, just after the sample drop. Data and ranging sidebands visible.
1.2m dish, 9GHz (high side) LO
If you have problems with TS Reader 1.06 not starting and giving a side-by-side configuration error, try this version of Visual C:
https://download.microsoft.com/download/9/7/7/977B481A-7BA6-4E30-AC40-ED51EB2028F2/vcredist_x86.exe
It worked for me on W7 & W10 LTSC 2019
Now at about 70000km, ephemeris data on NASA Horizons ref -156
I caught it testing on 8460MHz with an 8MHz wide signal. Spectrum shows level variations.
9GHz LO 1.2m dish
500kHz sidebands yesterday on 8497.5MHz
Locking to ground station on 8482.32MHz
TLEs updated and now with correct name.
Locked to ground, 8482.32 change modulation and 8497.5 came on with modulation as in previous post.
I could not see any activity in the other allocations which are all wider bandwidth (8475M, 8489.91M & 8460M)
Found by dreamsat on SatsUK
It's hard to work out what this is. It appears stable at geo position 49E and is to the east of Syracuse 3A & 4A. There appear to be 2 transponders. The full band plot also shows something from Syracuse just below the narrow band signal group.
One at 7250-7300MHz, a single wide band signal. There's a 2nd transponder which appear to be about 16MHz wide but only partially occupied with narrow band BPSK signals.
The plots below are centred on 7495MHz (21.4MHz on the scale)
Some of these have intermittent modulation and not all are continuous RF.
I was using the 8.4GHz front end on a 1.2m dish. This is not ideal at 7.5GHz however, it was set to RHCP which is possibly correct for this according to dreamsat.
Aditya L1 shall be the first space based Indian mission to study the Sun. The spacecraft shall be placed in a halo orbit around the Lagrange point 1 (L1) of the Sun-Earth system
This plot was when still in Earth orbit at about 37000km on 8482.32MHz +/- doppler.
It also had +/-500kHz sidebands a few minutes before this capture.
1.2m dish, LO 9GHz
There's a high probability that the thing I was tracking last night was Euclid whilst it was downlinking to Madrid.
The carrier was on 26239.981MHz with approximately -1.7Hz/sec Doppler change. The signal is too weak to see much in a wider bandwidth, the data rate is 55Mb/s. All I saw from the modulation was the short bursts about every 20 seconds that appear as dots on the waterfalls. It's weaker than JWST.
1.2m dish, Patriot Ka band linear feed, with an approx. 4dB NF-down converter
Carrier with it's close-in high side modulation
Carrier with it's close-in low side modulation (lines that are shown on about 1/2 the waterfall are interference from EDRS-A at 9E. They appear like that due to the dish tracking movement.
Crossing close to EDRS-A
Lucy now at 433.8Mkm with a Doppler variation of about -0.5Hz/sec.
9GHz LO
Now at 10.7Mkm and averaging around 8.5dB SNR
Syracuse 3A, 49.0°E [incl] is on 7720.0MHz LHCP
Syracuse 3B, 5.2° W is on 7705.0MHz LHCP
These are screenshots from Satdump demodulating the beacons. The polariser was set for 8.4GHz RHCP so not good for 7.5GHz LH. 3A is close to the trees hence the lower signal there. The output is an encrypted binary stream.
STEREO-A, was the first thing I found on 8.4GHz. It is approaching earth and is now quite close at about 11.5Mkm and will it get closer. It's signal is now strong enough to decode on 8.4GHz on a small dish For the full story see here: STEREO-A Comes Home
Here are a some of animated GIFs from yesterday. I used a 1.2m dish, 1dB NF LNA, downconverter, Airspy R2 on a Pi400 running SDR++ server and Satdump on a linux box. The SNR was around 8dB except during downpours when it dropped to 5dB. The pictures are from the UV instruments and the corona camera. It can be better to download them and play locally, they should loop.
Satdump is amazing software and well worth exploring if you are into more unusual satellite stuff. Thanks to everyone involved.
Demodulated and decoded using Satdump (many thanks to all involved with that). This animation is from the low data rate stream and is the UV195 set from this afternoon. The SNR was 8dB most of the time.
As above but not in communication with Madrid. Low data rate.
11.7Mkm -100dBm on DSS56, Madrid, 720kb/s
Nothing new since Jan 2022 but the spectrum above 7650 looks clear now compared to the previous post.
1.2m dish LHCP
