Hal Murray wrote: > What sort of gear does it take to hear a pulsar? > ... Is there a convenient one up near the north pole?
A potential target is PSR0329+54, 1.5 Jansky at 400Mhz, which corresponds to about 1.5E-26 W/m^2/Hz. I did some rough calculations and concluded that with a 16dB gain beam, a 120 hour epoch-folding integration might be enough for it to show up on a 'periodgram'. This was with 150kHz bandwidth, 40K front-end temperature. I tried this about 10 years ago, with no success but I didn't have very good antenna steering - I used a bank of four phased high-gain UHF TV antennas, polar mount clamped at +54 declination. It was necessary to write software to continuously re-time the received signal to barycentric coordinates before the integration. I injected a 1PPS from MSF 60kHz as the timing reference. A fun project, one that I will return to one day. -- Paul Nicholson -- _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
