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Looking for Detailed Design Information for the Antenna Used to Discover Pulsars

22 Jun 2016, 19:44 UTC
Looking for Detailed Design Information for the Antenna Used to Discover Pulsars
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Question: I would like the technical details of the antenna Jocelyn Bell Burnell and Antony Hewish used in the discovery of the first pulsar. For example, a single row of east-west full wave dipoles gives a very sharp beam width in RA, and they appear (from the photos) to be center fed with open wire transmission line (necessary because of the high input impedance). She has stated (here and there) that coaxial delay lines (RF phasing) were used to interconnect the various rows so as to generate beams with various declinations, but I would like to see, explicitly, how this was done. Finally, she mentions the construction of (impedance transforming) baluns to bring the final feeds into the receiving electronics (probably a “balanced open wire to coax type of thing). I have not been able to acquire a copy of her thesis, which would probably provide all of this detailed information. Thanks for any information that you can provide. — Mark
Answer: The original discovery paper for the “rapidly pulsating radio source” that ultimately became known as a “pulsar” appeared in the journal Nature in February of 1968 (Hewish etal. 1968, Nature, 217, 709). I have checked that reference for ...

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