Homepage von Bernd DL7APV Pulsare detection

Mit dieser großen Antenne kann man nicht nur EME machen, sondern auch ein wenig Radioastronomie!

With this huge antenna not only EME is possible, but also a bit radio astronomy!

 

JO62jr 40m asl.

 

Setup is here the 432 MHz EME Antenna on main page

128x11el. H-Pol. with

35,85 dBi gain @432MHz

Tsys=97K

RX RTL dongle V3

2MHz BW

 

Update June 2021 the airspy arrived and 10MHz are now possible

 

First tests with 10MHz

 

Many TNX to Hannes OE5JFL who invested a lot of time to confirm my detections with Presto, and I0NAA, IW5BHY and PA3FXB, for software and help!

See for basics and more:

http://neutronstar.joataman.net/  and

http://i0naa.altervista.org/  and

http://iw5bhy.altervista.org/  and

https://www.qsl.net/oe5jfl/pulsar/pulsar.htm

http://www.k5so.com/documents--and-downloads/download-tempo_calc.html

 

First attempt in 2018: B0329+54 was detected within only 200sec.

 

The B0329+54 is the strongest on 432 in the northern hemisphere!

With longer integration time this pulsar could be seen even with very small antennas!!!

Detected were currently around 100 pulsars, but seems this is close to maximum possible with my system.

More bandwidth is the only possible optimization what can be done, but QRM does limit this here.

Used Software Tempo & Murmur & extern OE5JFL with presto

Update June 2021 S/N Theory was corrected with background temp

Update sept 2021: in most cases the 10MHz S/N better, but there are several cases where it is vice versa. So qrm seems to be a big factor, but there are not many possibilities to optimize.

 

The 10MHz bandwidth I checked with sun noise and as expected at the ends of the band it drops.

 

The SWR is as well not 100% over the full bandwidth but acceptable:

 

The gain is also very good over the frequency:

 

Measured sun noise at the 10MHz airspy is:

QRG/MHz

sun/dB

428,5

17,5

429,5

18

430,5

19

431,5

19

432,5

20

433,5

19,5

434,5

18,5

435,5

18,5

436,5

17,5

437,5

17

438,5

17,5

 

Compared with the 2,2MHz RTL dongle (same time)

QRG/MHz

sun/dB

430,5

21,9

431,5

21,5

432,5

20,9

 

The absolute values are not 100% but relative seems like room for optimization

 

 

 

Name of Pulsar

S/N # theory

Measured S/N

Date of first detection

Recording time

2nd test 6h and 2,2MHz BW

S/N

2nd Test 6h and 10MHz BW

S/N

Pictures & Files

 

B0031-07

16,4

5,1

2021 Aug 11th

6h

 

 

B0031-07

 

B0136+57

13,2

9,5

Sept 2nd 2020

5h

 

 

B0136+57

 

B0138+59

14,5

10,1

June 16th 2020

3h

 

 

B0138+59

 

B0148-06

10,7

6,3

July 6th 2020 & more

3h

 

 

B0148-06

 

B0149-16

16,7

6,0

February 5th 2021

6h

 

 

B0149-16

 

B0301+19

15,6

8,1

October 21st 2020

5h

 

 

B0301+19

 

B0320+39

19,5

7,9

June 29th 2020

3h

11,5

9

B0320+39

 

B0329+54

740,7

111

May 4th 2020

Strongest!!

2h

 

 

B0329+54

B0329+54Test

 

B0301+19

15,6

8

October 20th 2020

5h

 

 

B0301+19

 

B0355+54

9,7

6,5

May 16th 2020

1h

12,4

28,9

B0355+54

 

B0450+55

13,8

7,0

May 16th 2020

1h

 

 

B0450+55

 

B0450-18

17,3

12,3

May 16th 2020

1h

 

 

B0450-18

 

B0525+21

14,9

5,4

May 16th 2020

2h

6,4

3,9

B0525+21

 

B0531+21

120,1

10,6

May 6th 2020

3h

4,4

5,4

B0531+21

 

B0540+23

13,4

8

July 6th 2020

3h

 

 

B0540+23

 

B0559-05

11,3

5,9

January 25th 2021

6h

 

 

B0559-05

 

B0611+22

18,7

8,4

Sept 3rd 2020

5h

 

 

B0611+22

 

B0626+24

15,5

12,8

July 17th 2020

3h

 

 

B0626+24

 

B0628-28

70,2

12

July 15th 2020

3h

 

 

B0628-28

 

B0727-18

10,9

4,6*

July 29st 2021

6h

 

 

B0727-18

 

B0740-28

79,9

11

July 15th 2020

1h

 

 

B0740-28

 

B0809+74

28

6,9

May 11th 2020

1h

14

8

B0809+74

 

B0818-13

34,8

8,3

May 12th 2020

1h

38

54

B0818-13

 

B0820+02

21,2

7

Sept 5th 2020

5h

 

 

B0820+02

 

B0823+26

33,2

17,5

May 11th 2020

1h

 

 

B0823+26

 

B0834+06

30,3

22,5

April 20th 2020

1h

 

 

B0834+06

 

B0906-17

12,7

6,2

May 3rd 2021

6h

 

 

B0906-17

 

B0919+06

22,3

5,2

May 16th 2020

1h

8,6

11

B0919+06

 

B0942-13

25,2

18,9

august 4th 2020

5h

 

 

B0942-13

 

B0950+08

100,5

38

April 25th 2020

1h

46

80

B0950+08

 

B1039-19

11,6

7,8

July 18th 2021

6h

 

 

B1039-19

 

B1112+50

14

7,6

January 19th 2021

6h

 

 

B1112+50

 

B1133+16

174,5

35

April 25th 2020

1h

40

40

B1133+16

 

B1237+25

27,5

7,7

May 11th 2020

1h

11

8

B1237+25

 

B1254-10

12,9

6,3*

July 30th 2021

6h

 

 

B1254-10

 

B1508+55

42,5

12,3

May 6th 2020

1h

30

49

B1508+55

 

B1540-06

30,3

6,0

June 22nd 2020

3h

9

12

B1540-06

 

B1541+09

20

4,6

June 28th 2020

3h

 

 

B1541+09

 

B1600-27

12,9

5,6

May 15th 2021

6h

 

 

B1600-27

 

B1604-00

25,1

10

June 23rd 2020

3h

5

7,7

B1604-00

 

B1642-03

165

85

April 24th 2020

1h

154

252

B1642-03

 

B1706-16

25,3

6

June 25th 2020

3h

23,2

33,5

B1706-16

 

B1717-16

12,4

7,1

July 21s 2021

6h

 

 

B1717-16

 

B1718-32

20,7

6

November 2nd 2020

4h

 

 

B1718-32

 

B1732-07

11

8,9

November 21st 2020

6h

 

 

B1732-07

 

B1737+13

10,1

7,6

January 16th 2021

6h

 

 

B1737+13

 

B1738-08

10,8

9,5

November 17th 2020

6h

 

 

B1738-08

 

B1742-30

13,8

4,0

January 26th 2021

4h

 

 

B1742-30

 

B1745-12

10,6

5,3

May 19th 2021

6h

 

 

B1745-12

 

B1749-28

262,9

95

July 14th 2020

3h

 

 

B1749-28

 

B1758-03

6

4,9

May 13th 2021

6h

 

 

B1758-03

 

B1804-08

12,2

10,6

August 3rd 2020

5h

 

 

B1804-08

 

B1818-04

36,6

19,9

June 20th 2020

3h

40

50,6

B1818-04

 

B1819-22

5,8

7,3

November 25th 2020

5h

 

 

B1819-22

 

B1821-19

34

7,2

August 8th 2020

5h

 

 

B1821-19

 

B1821+05

14,3

9

may 16th 2021

6h

 

 

B1821+05

 

B1822-09

14,3

8,2

July 17th 2020

3h

 

 

B1822-09

 

B1826-17

17,2

5,2

July 15th 2021

6h

 

 

B1826-17

 

B1831-03

32,8

5,5

July 8th 2020

3h

 

 

B1831-03

 

B1831-04

<6

4,4

August7th 2020

My weakest so far

5h

 

 

B1831-04

 

B1834-10

20,6

7

July 22nd 2020

5h

 

 

B1834-10

 

B1839+09

7,9

4,5

May 10th 2021

6h

 

 

B1839+09

 

B1839+56

15,1

5

November 24th 2020

6h

 

 

B1839+56

 

B1842+14

10,1

6,5

May 6th 2021

6h

 

 

B1842+14

 

B1844-04

12,4

6

July 10th 2020

3h

 

 

B1844-04

 

B1845-01

19,9

7

August 6th 2020

5h

 

 

B1845-01

 

B1857-26

25

5,2

August 4th 2020

5h

 

 

B1857-26

 

B1859+03

42,3

4,5

June 21st 2020

3h

3

3

B1859+03

 

B1900+01

21,4

9,8

August 2nd 2020

5h

 

 

B1900+01

 

B1905+39

9,2

7,1

January 25th 2021

6h

 

 

B1905+39

 

B1907-03

9,5

7,7

November 13th 2020

6h

 

 

B1907-03

 

B1907+10

14,9

10,5

July 15th 2020

3h

 

 

B1907+10

 

B1911-04

32,4

20

June 15th 2020

2h

 

 

B1911-04

 

B1914+09

5

5,3

May 10th 2021

6h

 

 

B1914+09

 

B1915+13

15,5

7,0

July 8th 2020

5h

 

 

B1915+13

 

B1918+19

9,8

5,7

August 5th 2020

5h

 

 

B1918+19

 

B1919+21

18

21,2

June 27th 2020

3h

28

33,8

B1919+21

 

B1920+21

16,7

5,8

June 27th 2020

3h

 

 

B1920+21

 

B1929+10

49

18,5

May 1st 2020

1h

61

119,5

B1929+10

 

B1929+20

11,4

5,3

Aug 2nd 2020

6h

 

 

B1929+20

 

B1933+16

58,2

42

May 1st 2020

1h

53

102

B1933+16

 

B1944+17

13,1

6,4

July 13th 2020

3h

 

 

B1944+17

 

B1946+35

22,7

12

May 6th 2020

1h

28

31

B1946+35

 

B1953+50

14

11,0

August 4th 2020

5h

 

 

B1953+50

 

B2000+40

16,5

5,0

June 15th 2020

3h

4,6 / 4,1

4,0 / 7,1

B2000+40

 

B2002+31

6

6,2

January 11th 2021

6h

 

 

B2002+31

 

B2016+28

59,5

56

April 30th 2020

1h

24

97

B2016+28

 

B2020+28

11,7

17,8

June 10th 2020

2h

18

33

B2020+28

 

B2021+51

28,7

3,9

June 15th 2020

2h

22

31

B2021+51

 

B2027+37

8,4

6,3

January 15th 2020

6h

 

 

B2027+37

 

B2043-04

18,2

10

November 23rd 2020

6h

 

 

B2043-04

 

B2044+15

12,6

5,6

January 17th 2020

6h

 

 

B2044+15

 

B2045-16

123

13,1

June 20th 2020

3h

19

14

B2045-16

 

B2053+63

11

6,1

October 29th 2020

6h

 

 

B2053+63

 

B2110+27

15,4

12,4

November 12th 2020

6h

 

 

B2110+27

 

B2111+46

33,1

8,7

May 1st 2020

1h

13

13

B2111+46

 

B2148+63

11,3

10,7

June 30th 2020

3h

 

 

B2148+63

 

B2154+40

23,7

11,4

May 12th 2020

1h

12

11

B2154+40

 

B2217+47

34

36

May 2nd 2020

1h

48

37

B2217+47

 

B2255+58

9

7,7

July 7th 2020

3h

 

 

B2255+58

 

B2310+42

22,9

7,6

May 12th 2020

1h

20

28

B2310+42

 

B2319+60

6,8

8,3

July 3rd 2020

4h

 

 

B2319+60

 

B2303+30

22

8,0

August 31st 2020

5h

 

 

B2303+30

 

B2315+21

14,1

7,99

January 12th 2021

6h

 

 

B2315+21

 

B2327-20

65,2

15,2

August 6th 2020

5h

 

 

B2327-20

 

B2351+61

10,3

4,6

October 28th 2020

5h

 

 

B2351+61

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Only with 10MHz Bandwidth decoded

# Calculated with Murmur + background temp at given time

 

Unsuccessful attempts or unclear

 

B1913+10

13,9

nil

Sept 1st 2020

5h

 

 

B1913+10

 

J1808-0813

8,6

5,9 ?a bit too weak?

November 16th 2020

6h

 

Better with correct .par file

J1808-0813

 

B1923+04

9,3/10,8

4,7 + 4,7

Too weak?

November 18th 2020

& June 2021

6h

8h

 

 

B1923+04

 

B2224+65

7,8

4,79 ???

January 16th 2021

6h

 

 

B2224+65

 

B1937-26

13,7

5 ?

July 20th 2021

6h

 

 

B1937-26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B1845-19

<6

5,7 ??

May 21st 2021

6h

 

 

B1845-19

 

B1900+05

<6

5,4??

May 25th 2021

8h

 

 

B1900+05

 

B1804-27

<6

nil

Oct 27th 2020

5h

 

 

B1804-27

 

B1907+02

<6

nil

November 14th 2020

6h

 

 

B1907+02

 

B1917+00

<6

4,6 ??

November 22nd 2020

6h

 

 

B1917+00

 

B1907+00

<6

6 ???

May 18th 2021

6h

 

 

B1907+00

 

B1940-12

<6

5,9?

May 22nd 2021

6h

 

 

B1940-12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B1737-30

<6

nil

October 20th 2020 &

January 2021

4h

Not possible

Too short above horizon and Saggitarius behind

B1737-30

 

B1900+06

14,6

nil

October 19th 2020

5h

Not possible

to detect with my software

B1900+06

 

 

If anybody needs a special record drop me a mail!

 

 

 

 

 

 

 

 

431.5 at start in May 2020
Changed to 431.4 26.6.2020
changed to 431.2 at 13.7.2020 12:00 UTC
July 2021 10MHz Airspy added

All recorded with 2MHz BW and 4 channels done with NI Labview runtime and software from IW5BHY, tnx Andrea!
since July 2021 also 10MHz with Airspy + Presto used in parallel

 

 

Last update July 2021