5 days worth of drift scans on my 1.54 meter mini dish!

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Jason Burnfield

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Apr 14, 2026, 11:35:23 AM (4 days ago) Apr 14
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m31 successive scans.jpg
IMG_0814.jpeg
IMG_0812.jpeg

dave bracey

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Apr 14, 2026, 12:34:08 PM (4 days ago) Apr 14
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Hi Jason,

Very interesting! Am I right in assuming that the top chart (just below the M31 profile curve) is day one and the bottom chart (next to the photos of your dish) is the accumulation of days one to five?
Thanks
Dave

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Jason Burnfield

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Apr 14, 2026, 12:51:43 PM (4 days ago) Apr 14
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Dave,

You are correct. The spectra are averages of successive days of observing as you go down the page.

Jason Burnfield
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“Six pints of bitter, …And quickly please, the world’s about to end.” - The Hitchhiker’s Guide to the Galaxy


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dave bracey

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Apr 14, 2026, 1:08:28 PM (4 days ago) Apr 14
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That's great! Looks like you have a curve building very nicely. Do you plan to continue adding for a few more days? Be interesting to see what happens.
D

Jason Burnfield

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Apr 14, 2026, 1:38:36 PM (4 days ago) Apr 14
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My plan is 9 days total on m31 and then eventually on m33 as well.


Jason Burnfield
405-615-3924

“Six pints of bitter, …And quickly please, the world’s about to end.” - The Hitchhiker’s Guide to the Galaxy

Robert Hamers

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Apr 14, 2026, 1:55:41 PM (4 days ago) Apr 14
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Hi-

This looks super-interesting.  I’m confused, though, about what is the top graph?   Did the top graph somehow come from the 5 days of scanning down lower? 

 

Thanks!

Bob

 

 

From: "sara...@googlegroups.com" <sara...@googlegroups.com> on behalf of Jason Burnfield <jasonbu...@gmail.com>
Reply-To: "sara...@googlegroups.com" <sara...@googlegroups.com>
Date: Tuesday, April 14, 2026 at 12:38 PM
To: "sara...@googlegroups.com" <sara...@googlegroups.com>
Subject: Re: [SARA] 5 days worth of drift scans on my 1.54 meter mini dish!

 

My plan is 9 days total on m31 and then eventually on m33 as well.

Jason Burnfield
405-615-3924

“Six pints of bitter, …And quickly please, the world’s about to end.” - The Hitchhiker’s Guide to the Galaxy

 

On Tue, Apr 14, 2026 at 11:08AM 'dave bracey' via Society of Amateur Radio Astronomers <sara...@googlegroups.com> wrote:

That's great! Looks like you have a curve building very nicely. Do you plan to continue adding for a few more days? Be interesting to see what happens.

D

 

On Tuesday, 14 April 2026 at 17:51:47 BST, Jason Burnfield <jasonbu...@gmail.com> wrote:

 

 

Dave,

 

You are correct. The spectra are averages of successive days of observing as you go down the page.

Jason Burnfield
405-615-3924

“Six pints of bitter, …And quickly please, the world’s about to end.” - The Hitchhiker’s Guide to the Galaxy

 

On Tue, Apr 14, 2026 at 10:34 AM 'dave bracey' via Society of Amateur Radio Astronomers <sara...@googlegroups.com> wrote:

Hi Jason,

 

Very interesting! Am I right in assuming that the top chart (just below the M31 profile curve) is day one and the bottom chart (next to the photos of your dish) is the accumulation of days one to five?

Thanks

Dave

 

On Tuesday, 14 April 2026 at 16:35:31 BST, Jason Burnfield <jasonbu...@gmail.com> wrote:

 

 

Jason Burnfield

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Apr 14, 2026, 2:36:40 PM (4 days ago) Apr 14
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The top graph is a reference profile acquired from a professional published survey.


Jason Burnfield
405-615-3924

“Six pints of bitter, …And quickly please, the world’s about to end.” - The Hitchhiker’s Guide to the Galaxy

Robert Hamers

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Apr 14, 2026, 4:46:56 PM (4 days ago) Apr 14
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Ah— make sense.   Thanks for the clarification!  Looks like you’re getting some nice results!
bob


Jason Burnfield

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Apr 14, 2026, 5:14:52 PM (4 days ago) Apr 14
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Here’s a direct/scaled paste-in of the actual figure in the published paper with my 6 days of averaged data underneath.


Jason Burnfield
405-615-3924

“Six pints of bitter, …And quickly please, the world’s about to end.” - The Hitchhiker’s Guide to the Galaxy

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