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.

Hannes has obtained results with his 3 m offset dish at 1294 MHz (2 MHz bandwidth) and 420 MHz (2 MHz and 10 MHz) for a total of 4 pulsars with this dish size.

Results With a 3 m Dish @ 1294 MHz in 2 MHz Bandwidth

The 3 m dish used by OE5JFL to detect B0329+54 in a 5 hour long data run...

Hannes says...

"  After maybe 10 observations with negative result, I finally  detected the pulsar also with my 3m dish at home, which I use mainly for terrestrial contacts.
The antenna is placed on top of a building with no obstacles around. This is good for operating tropo, but worse for observing pulsars, because I pick up a lot of RFI.
It was a nice experience to see that it is possible to detect a strong pulsar even with moderate sized antenna without large bandwidth.  "

A nice result indeed !

Results With a 3 m Dish @ 420 MHz in 2 MHz and 10 MHz Bandwidths

As a next step a 70cm feed was added to the dish. It is a dual-dipole feed with a square reflector, made of mesh.

See below the results of a 6 hours observation @ 420 MHz of B0329+54 comparing bandwidths of 2 MHz and 10 MHz.

Presto Software Result of 2 MHz Bandwidth Observation (RTL-SDR)

 

Presto Software Result of 10 MHz Bandwidth Observation (Airspy SDR)

This is a very nice demonstration of the advantages of increased observational bandwidth.

Further Observations Using 10 MHz Bandwidth

A further 3 pulsars were detected using the wider 10 MHz bandwidth (B0950+08, B1642-03 and B1929+10).

For further details of the above go to Hannes' 3 m dish webpage.

For further details of Hannes' results with his 7.3 m dish visit here.