Amateur Pulsar Observations - Hannes Fasching  (OE5JFL)

NOTE: All images presented here and most of the text has been downloaded from this website with permission of Hannes. The information here is but a small sample of the detail available on Hannes's comprehensive website which details the latest pulsar 'trophy' count.

Status January 2018: 54 pulsars detected ( 48 on 420MHz, 18 on 1292MHz, 11 on both bands)

Efforts with a 7.3 m diameter offset dish by Hannes have seen the successful detection of 54 pulsars so far - as of January 2018 - on 424 MHz or 1294 MHz (or both).  He would like to acknowledge the assistance of others towards achieving his success, particularly Andrea Dell'Immagine (IW5BHY), as well as Mario Natali (I0NAA).

The two weakest pulsars detected as January 2018 are...

424 MHz: B0626+24 on 424MHz (S400 = 31 mJy)

1294 MHz: B1845+01 on 1294MHz (S1400 = 8.6 mJy)

...an impressive result !

System

Antenna:  7.3 m homemade offset dish, OE5JFL tracking system
Feeds: 70 cm (424 MHz) dual-dipole with solid reflector, 23 cm (1294 MHz) RA3AQ horn
Preamplifiers: 23 cm cavity MGF4919, 70cm 2SK571 (30 years old!)
Line Amplifier: PGA103+
Interdigital filter: designed with VK3UM software, 70 cm 4-pole, 23 cm 3-pole
Receiver: RTL-SDR (error <1ppm), 2 MHz bandwidth
Software: IW5BHY (Andrea), Presto, Tempo, Murmur (Mario - I0NAA)

Antenna

The antenna used by OE5JFL to observe pulsars.

The parabolic dish antenna is a 7.3m homemade offset dish, f/D=0.46 .

Hannes's results are certainly impressive.  Further details of the 7.3 m dish results can be found here.