Radioastronomy and interferometer

In order to debug the alignment software and to extract EGNOS data, recording of common noise source has been made on both astro channel and EGNOS signal on reference channels.

Measurement on 13.10.2014 from 21:00 to 21.16.15

Sidi RX timing (upper traces in the video)
Common noise sourcem, phase difference abt  -132 (or +50 ) deg on 1410 MHz

Sidi 1, reference  antenna 3m, S/N > 20db Sidi 2, reference ant helix, S/N 8db

Reference antennas  m(E-W)  3m(N-S) shifted

recording on Fq
./sidi_rsr 1410 1579

In order to compensate geostationary movement, relevant data about satellite has to be aquired. The data is decoded using viterbi decoder, we use  Phil Karn KA9Q implementation  (git addr: git clone https://github.com/Opendigitalradio/ka9q-fec.git ).

I wrote decoding software that generates messages in EMS format as described in ESA document recorded noise 

Attached is a contents of GEO Navigation Message Type 9 representing the position, velocity, and acceleration of the geostationary satellite in ECEF coordinates, and its apparent clock time and frequency offsets.

c627de165ef236b6c6f3e060400000000000000000000000000000000016ff80

Msg 9 decode

 

 

Stockert 25m Radio Telescope

European Conference on Amateur Radio Astronomy (EUCARA) with the team at the Astropeiler Stockert Radio Telescope hosted a conference for amateurs active in radio astronomy in Europe. The intention was to bring people together to exchange ideas and experiences. We were provided the opportunity to do some hands on observations with 25m dish such as real-time pulsar observations

Participants from several countries had many interesting contributions, with the great presentation of the keynote speaker mrs Dr. Silke Britzen about latest research in area of Black holes.

SIDI projects has been presented with a big interest of participants to help in growing the possible network of receiving stations.

More pictures from the site and visit to the Effelsberg 100m dish can be seen here.

 

 

 

Special events, undefined bugs/artefacts, QRM from (extra)terrestrials

22/23. april 2014 12-12 UTC Download 23/24. april 2014 12-12 UTC Download 25/26. april 2014 12-12 UTC Download 26/27. april 2014 12-12 UTC Download 27/28. april 2014 15-12 UTC DownloadNew baseline, antennas not perfectly alligned

Date UTC Frequencyq RA Dec Source pwr Jy/Fq notes image VizieR
20-mar-2014 03:10 1420MHz 14:55 -02 ?     object1.png link
21-mar-2014 03:02 1420MHz 14:52 -02 ?     object2.png link
02-april-2014 13:40-14:05 1420MHz 3:18 -04:24 Solar radio burst SUM10R, Sun angle 39.04 deg., 123 [10^-22 W/m^2/Hz]   SUM10R.png  
26-june-2014 08:28-08:34 1420     Unknown      

 

 

Examples of visualized first ecordings with 41.2m baseline and 2x3m parabola, rx 35dB preamp s53mv design, nf abt 0.5dB.

The sources are checked wit catalog http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VIII/65

The list of observed sources with 41.2m baseline and 2x3m parabola, px 35dB preamp s53mv design, nf abt 0.4dB.The sources are checked wit catalog http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=VIII/65http://www.der-schweighofer.at/wg/1035/modellsport?query=luftschraubUndefined bugs/artefacts or extraterrestrials22/23. april 2014 12-12 UTC Download 23/24. april 2014 12-12 UTC Download 25/26. april 2014 12-12 UTC Download 26/27. april 2014 12-12 UTC Download 27/28. april 2014 15-12 UTC DownloadNew baseline, antennas not perfectly alligned  http://www.der-schweighofer.at/wg/1035/modellsport?query=luftschraub

Date UTC Frequencyq RA Dec Source pwr Jy/Fq notes image eff.pwr
1-may-2014- 22:18 1420MHz 11:05 -02 180925-201924 mJy: 19686.30 corr. 5321.74   11_05_-2.png link
19-mar-2014 22:18 1420MHz 11:05 -02 110203-011618 2799.6 mJy   11_05_-2.png link
19-mar-2014 23:47 1420MHz 12:30 -02 124219-044619 3672.1 mJy   12_30_-2.png link
20-mar-2014 00:11 1420MHz 12:56 -05 125611-054720 9711.2 mJy low 13_04_-03.png link
20-mar-2014 00:22 1420MHz 13:09 -03 130949-001236 1636.7 mJy ?? 13_04_-03.png link
21-mar-2014 01:37 1420MHz 14:28 -01 142831-012408 3157.4 mJy   14_28_-01.png link
20-mar-2014 02:23 1420MHz 15:10 -05 151053-054307 3569.3 mJy   15_10_-05.png link
23-mar-2014 02:29 1420MHz 15:40 -05 154030-050317 2116.1 mJy   15_40_-05.png link
20-mar-2014 04:36 1420MHz 17:20 -01 172034-005844 31223.5 mJy   17_25_-02.png link
10-apr-2014 04:34 1420MHz 18:43 -02

184736-015522,

184738-015731

10845.3 mJy

6187.0 mJy

2 sources

18_47_-02.png link
20-mar-2014 07:59 1420MHz 20:47 -02 204710-023622 2282.2 mJy   20_47_-02.png link
20-mar-2014 11:10 1420MHz 23:59 00 SUN flx 156/10.7cm scale/64 23_59_00.png  
25-mar-2014 14:21 1420MHz 03:39 -1 033930-014635 2423.6 mJy   03_39_-1.png link
Date UTC Frequencyq RA Dec Source pwr Jy/Fq notes image eff.pwr
1-may-2014- 22:18 1420MHz 11:05 -02 180925-201924 mJy: 19686.30 corr. 5321.74   11_05_-2.png link
19-mar-2014 22:18 1420MHz 11:05 -02 110203-011618 2799.6 mJy   11_05_-2.png link
19-mar-2014 23:47 1420MHz 12:30 -02 124219-044619 3672.1 mJy   12_30_-2.png link
20-mar-2014 00:11 1420MHz 12:56 -05 125611-054720 9711.2 mJy low 13_04_-03.png link
20-mar-2014 00:22 1420MHz 13:09 -03 130949-001236 1636.7 mJy ?? 13_04_-03.png link
21-mar-2014 01:37 1420MHz 14:28 -01 142831-012408 3157.4 mJy   14_28_-01.png link
20-mar-2014 02:23 1420MHz 15:10 -05 151053-054307 3569.3 mJy   15_10_-05.png link
23-mar-2014 02:29 1420MHz 15:40 -05 154030-050317 2116.1 mJy   15_40_-05.png link
20-mar-2014 04:36 1420MHz 17:20 -01 172034-005844 31223.5 mJy   17_25_-02.png link
10-apr-2014 04:34 1420MHz 18:43 -02

184736-015522,

184738-015731

10845.3 mJy

6187.0 mJy

2 sources

18_47_-02.png link
20-mar-2014 07:59 1420MHz 20:47 -02 204710-023622 2282.2 mJy   20_47_-02.png link
20-mar-2014 11:10 1420MHz 23:59 00 SUN flx 156/10.7cm scale/64 23_59_00.png  
25-mar-2014 14:21 1420MHz 03:39 -1 033930-014635 2423.6 mJy   03_39_-1.png link
20-mar-2014 16:50 1420MHz 05:35 -5 053517-052243 113563.0 mJy Orion 05_35_-5.png link
20-mar-2014 17:35 1420MHz 06:26 -5 062710-055306 18486.1 mJy   06_26_-05.png link
10-apr-2014 16:19 1420MHz 06:29 -03 062710-055306 18486.1 mJy new SW 201404.png 9542.44
20-mar-2014 18:40 1420MHz 07:26 -05 072705-020405 1512.2 mJy   07_26_-05.png link
25-mar-2014 19:00 1420MHz 08:15 -03 081527-030826 1962.6 mJy   08_15_-03.png link
                   
Date UTC Frequencyq RA Dec Source pwr Jy/Fq notes image VizieR
20-mar-2014 03:10 1420MHz 14:55 -02 ?     object1.png link
21-mar-2014 03:02 1420MHz 14:52 -02 ?     object2.png link
02-april-2014 13:40-14:05 1420MHz 3:18 -04:24 Solar radio burst SUM10R, Sun angle 39.04 deg., 123 [10^-22 W/m^2/Hz]   SUM10R.png  
20-mar-2014 16:50 1420MHz 05:35 -5 053517-052243 113563.0 mJy Orion 05_35_-5.png link
20-mar-2014 17:35 1420MHz 06:26 -5 062710-055306 18486.1 mJy   06_26_-05.png link
10-apr-2014 16:19 1420MHz 06:29 -03 062710-055306 18486.1 mJy new SW 201404.png 9542.44
20-mar-2014 18:40 1420MHz 07:26 -05 072705-020405 1512.2 mJy   07_26_-05.png link
25-mar-2014 19:00 1420MHz 08:15 -03 081527-030826 1962.6 mJy   08_15_-03.png link
                   

Strong solar radio burst recorded by SIDI

May, 24.th

Solar event

 

On  2014 Apr 02 1341 UTC, burst has been identified by SIDI, with antennas pointing 40° from the Sun.

The event was discovered when we were testing Marko's (s57uuu) SIDI fringe DSP searching tool, and the image was saturated at some point.The event is visible on DSP 24hr recording, with time on Y and fringe frequency on X (horizontal) axis.

 

Information about  the SUM10R  event is available here.

Nasa released video on this event.

SIDI detailed recording is available here.