PROJECT H_Line 3D

[Alex P]

Project :   H_Line_3D

https://github.com/AP-HLine-3D

A Beginner's Guide to :

Antenna Fabrication,
Reception,
Recording,
Spectral Processing, &
Spectral Graphic Display
of the 21 cm Wavelength Microwave Electro-Magnetic Emission Spectrum from Neutral Hydrogen

( Inter-Stellar Mass ) Clouds within our Galaxy : The Milky Way

 

======================================================

 

Hardware Alex Pettit :  STUDENT EDITION Circular Patch Feed Disk Director Yagi Antenna

 

A Small,  Efficient,  Portable,  Economical, 21cm Wavelength Antenna with Excellent Performance.

 

The intent of this is to provide instructions to fabricate a

Student Level 21cm Hydrogen Line Radio Telescope

able to be Fully Constructed with Hand Tools.  

 It is light enough to be mounted on a very low cost photo tripod

 

================================================

 

Software  Jamison Adcock:  IFAvg2CSV designed to Process Daniel Kaminski IF_Ave *.txt filesets by

 

Correcting the Spectra for Background Drift ,

Normalizing the Spectra to Cold Sky,

Converting the Spectra to a logarithmic dB Scale ( and future alternate scalings )

Processing the Spectra files into *.csv Formats compatible with  Fumihiro Matsui Rinearn  Graphics

Output : Raw Data 2D File, Frame to Frame Drift 2D File , Drift Corrected and Normalized 2D/3D File    

 

[b alex pettit jr]

The HARDWARE

The SOFTWARE

The RESULTS

Alex

[Andrew Thornett]

Thanks guys for getting this ready for us all!

Andy

Sent from Outlook for Android

---

From: 'b alex pettit jr' via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Sent: Sunday, October 13, 2024 5:25:56 PM
To: 'Alex P' via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Subject: Re: [SARA] PROJECT H_Line 3D

 

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[andrew....@googlemail.com]

Hi Alex

 

I’ve downloaded this from Github but I can’t work out how to run the software?

 

Andy

[b alex pettit jr]

Review the info in the 21cm_  PDF files

On Sunday, October 13, 2024 at 03:41:59 PM EDT, andrew.thornett via Society of Amateur Radio Astronomers <sara...@googlegroups.com> wrote:

[andrew....@googlemail.com]

Oh I misunderstood – I thought this iteration allowed 3D plotting – I can see that is still to come – thanks

Andy

 

From: 'b alex pettit jr' via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Sent: 13 October 2024 20:46
To: andrew.thornett via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Subject: Re: [SARA] PROJECT H_Line 3D

 

Review the info in the 21cm_  PDF files

 

On Sunday, October 13, 2024 at 03:41:59 PM EDT, andrew.thornett via Society of Amateur Radio Astronomers <sara...@googlegroups.com> wrote:

 

 

 

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[b alex pettit jr]

Andrew,

Follow the steps in the documents .

It creates these  2D/3D plots

[b alex pettit jr]

Project :   H_Line_3D

There are a number of PDF files uploaded to this repository

https://github.com/AP-HLine-3D/HLine3D

1) Detailed instructions to Fabricate the Student Edition Yagi

2) Steps for Software Installation of both SDR# w/ IF Avg and Graphics Processing

3) an EXCEL template which allows one to load one spectra of IF_Ave data and

      auto adjust to and graph in dB re Cold_Sky and label  the Pk dB Ampl

4) The Main file which documents the several months long 21cm Yagi Antenna Project

5) An introduction to using Numerical Electromagnetic Code 

           and its application to the development of the Yagi Antenna

6) A PDF conversion of the slide set of SARA 2022 Eastern Conference 

                  WiFi Antenna based H Line System Presentation

Alex

[b alex pettit jr]

There are three other plots that allow you to examine :

1) each 'frame' of Raw data to see the spectral characteristics ,

2) the frame_by_frame background level Drift  ( cal'd in dB re lowest ampl )

3) the final Corrected Data set in 2D format ( cal'd in dB re Cold_Sky)

-Alex