Re: AstroSpy #radioastronomy #21cm #1420mhz

Marcus D. Leech

On 10/17/2019 10:58 AM, iz5dkm@... wrote:
Yes, the visible signal is certainly generated by interstellar material belonging to our galaxy.

The aggregate M31 signature is at a redshift of roughly -500km/sec, or centered at about 1422.77MHz -- which is off your chart.

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