Effective integration time was about 40 minutes.
The beamshape is roughly 42 x 18 degrees from our array antenna.
On 2016-12-01 15:54, Daniel R. Marlow wrote:
> Hello,
>
> First, congrats to Marcus and CCERA.
>
> We are working at 21 cm (1420 MHz) and find that there are at least a few
> pulsars not that far below B0329+54 (now called J0332+5434) in signal
> strength. Indeed, one of the interesting things is that owing to
> scintillation effects, there are times when this pulsar is not as bright as
> some of the pulsars. Of course, when this pulsar is at its best, the
> signal really is quite strong: we get a good detection after just a few turns
> using a 60' dish and 50 MHz of BW.
>
> A question . . . roughly what was the integration time for the plot that you
> showed?
>
> Sincerely,
> Dan Marlow
>
> FROM: Discuss-gnuradio
> <discuss-gnuradio-bounces+marlow=princeton....@gnu.org> on behalf of
> "mle...@ripnet.com" <mle...@ripnet.com>
> DATE: Thursday, December 1, 2016 at 3:41 PM
> TO: "Iain Young, G7III" <g7...@g7iii.net>
> CC: Discuss-gnuradio <discuss-gnuradio-bounces+mleech=ripnet....@gnu.org>,
> "discuss-gnuradio@gnu.org" <discuss-gnuradio@gnu.org>
> SUBJECT: Re: [Discuss-gnuradio] Probable pulsar observing success at CCERA
>
> Keep in mind also that B0329+54 is really the only one within reasonable
> "reach" for an amateur in the northern hemisphere--the others are much
> fainter, although if one simply added another "gulp" of antenna every
> paycheque or two...
>
> Also, you need a stable clock--I'm using an OCXO, but a TCXO will work for
> shorter observing times. So, if you are using a dongle, you'll need to
> replace its clock.
>
> On 2016-12-01 15:19, Iain Young, G7III wrote:
>
> Hi Marcus,
>
> Brilliant. I am in the middle of assembling my own radio telescope,
> but had not thought Pulsar reception would be possible.
>
> I have a couple of questions on the RF Hardware. I see from some other
> updates, that the antenna is essentially sets of a 4 bay HDTV antenna.
>
> How are you phasing them all together ? Just additive combiners with
> same length coax ? What amplification are you using before feeding
> them to the SDR ? Or ?
>
> Best Regards
>
> Iain
>
> On 01/12/16 18:45, Marcus D. Leech wrote:
>
> One of the many goals we set for ourselves at the Canadian Centre for
> Experimental Radio Astronomy was to successfully observe
> pulsar B0329+54 before spring. This pulsar is the only one bright
> enough for a small observatory in the northern hemisphere to
> observe.
>
> See our update:
>
> http://www.ccera.ca/uncategorized/success-in-observing-pulsar-b032954/
>
> The software is available via github:
>
> https://github.com/ccera-astro/pulsar_pfb _display
>
> No custom blocks required--just a modern Gnu Radio install, and ideally,
> pyephem.
>
> Doing this with Gnu Radio was so very easy...
>
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