Re: AstroSpy #radioastronomy #21cm #1420mhz

Daniel Fox

You are definitely receiving Hydrogen line emissions from within this galaxy.  Since M31 is moving relative to us I would think you would need to look about 3 MHz higher or lower to see Hydrogen line emissions from it.


On Thu, Oct 17, 2019 at 6:29 AM <iz5dkm@...> wrote:
I tried receiving the hydrogen line in the direction of M31 but I can't solve the signal, evidently the s / n ratio is still low.
The first image in the frequency domain, the second in the speed domain.

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