RadioJoe

Yet no response from  OP Makarand
My BIG Thanks go to the OP for rekindling a fire in this 'ole stove'

Ed astro,
re your ""SDR artifacts""
Thanks for the interesting technique

Quite coincidental I was just reading about 'self calibration'
 = SELF CALF
 https://forge.oca.eu/trac/fitOmatic/wiki/self-cal
""Self-calibration is a method first developed in radio-astronomy to produce radio-interferometric images of an astrophysical object""

As Miguel_EA1HTA ... noted ...  (and I paraphrase ** because this is true for me too**)
**the redeeming factor is almost always the learning** while implementation comes later ...
 
72 73
John
N3AAZ
 

I notice Makarand's post  Backyard Radio Telescope  increased from  290  views to  442  since my   Oct 26  reply

I wonder if there is enough interest here to share   "your"    experience? 

John
N3AAZ
 

I found your call for help late
but yet no reply form you
so hope you have not deserted hi HI

May I suggest a project that produces almost immediate results

Radio Jove

https://groups.io/g/radio-jove/topics

Juipter was in opposition 220926 (September 26) https://stellarium.org/
  a free open source planetarium for your computer
  !!opposition!! = Sun angle at 180 degrees...
...that is Earth is between Sun and Jupiter for best signal to noise observation
And will stay close for several months (Stellarium)

The project can be as simple as a home brew 20 meter dipole set up in special orientation and cut for 20.1 MHz has a length of 23.28 ft (23’ 3” or 7.09 m) as measured from tip to tip of the wire ...see Figure 3-1 here...
(https://radiojove.gsfc.nasa.gov/radio_telescope/manuals/RJ_ant_manual_2.0.pdf)

And I suggest start with a single element (just one dipole vs two) for your first telescope
Two dipoles plus that delay line (special length of coax measured in wavelength degrees) makes the two element array steerable, so depending on you 'back yard' obstruction (if any) and elevation (Earth's latitude) you may choose to change or modify your second telescope elevation (height above ground) and lQQk angle (delay line length) for better observation

You will also need...
HF receiver that tunes 20.1 mHz and best if you can disable AGC
PC with sound card for recording observations to apps such as
       https://www.audacityteam.org/download/ (free)
Check out RSS (Radio-Sky Spectrograph) discussed on RadioJove link above
Plus tons of other free apps on the web


Again, this telescope project can be as simple (few $$) as home brew above
    ... or as complex (more $$) as a complete kit...

https://radiojove.gsfc.nasa.gov/
https://radiojove.gsfc.nasa.gov/radio_telescope/manuals/
https://101science.com/radiojove.html



Now for the gQQd stuff
This HF radio telescope can be multi purpose such as target;

1)   Solar storms

2)   Solar gray line ('rise and 'set are very dynamic)
    https://en.m.wikipedia.org/wiki/Terminator_(solar)#:

3)   Aurora (depending on your latitude for best dynamics)

4)   The up comming Solar eclips (depending on your Latitude and Longitude )... https://hamsci.org/article/hamsci-use-grape-personal-space-weather-stations-study-2023-and-2024-solar-eclipses

5)   My bucket list includes ... EME/echo (EarthMoonEarth)
... https://physics.princeton.edu/pulsar/k1jt/wsjtx.html

yet just another 'facet' on this marvoules ham radio hobby

Enjoy

73
John
N3AAZ