Pulsar Observations - Mario (I0NAA)

NOTE: All the information and images presented here are reproduced with permission by Mario.

Mario Natali (I0NAA) has detected B0329+54 @ 1297 MHz and @ 409 MHz.

Background

Mario has a 5 metre dish situated near Assisi, Italy.  He has conducted observations of B0329+54 at this location @ 1297 MHz and 409 MHz.

Receiving Systems

Frequency : 1297 MHz
Antenna : 5m Dish
Tracking : Radio Eyes + PstRotator
Feeder : W2IMU
Preamplifier : 0.3 dB NF, 38 dB Gain
Line amplifier : SV1AFN with PGA130+
Receiver : RTL SDR
Software : IW5BHY
Integration bandwidth 2 MHz
Integration time : 2 hours

Frequency : 409 MHz
Antenna : 5m Dish
Tracking : Radio Eyes + PstRotator
Feeder : Loop with BFR
Preamplifier : 0.45 dB NF, 60 dB Gain
Receiver : RTL SDR
Software : IW5BHY
Integration bandwidth 2 MHz
Integration time : 2.5 hours

Antenna

The 5 metre mesh dish antenna used by I0NAA to observe pulsars at 1297 MHz with a W2IMU feed.  The dish support has an ingenious design to allow a quick change of feeds and to also allow stowing during storms - or simply to hide it.

    

For the 409 MHz observations a BFR Loop feed was installed on the 5 metre mesh dish.

The Results (January 2017)

The results of detection of B0329+54 (~ 3300 ly) as given by I0NAA.

PRESTO Folding Profiles and Waterfall Plots

Observations were done at:

  1. 1297 MHz for 2 hours (27th January, 2017)

    This is the PRESTO printout of the 1297 MHz detection courtesy of Andrea Dell'Immagine's (IW5BHY) conversion routine of data files with the corresponding waterfall display from Andrea's software on the right.

      

  2. 409 MHz for 2.5 hours (30th January, 2017)

    This is the PRESTO printout of the 409 MHz detection courtesy of Andrea Dell'Immagine's (IW5BHY) conversion routine of data files with the corresponding waterfall display from Andrea's software on the right.

      

PRESTO Profiles

Data output from PRESTO was plotted for the two observations.

 

Overall a nice demonstration of the B0329+54 pulsar at two observation frequencies.