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Eduard Mol
,
JERRY TAYLOR
2
9:20 AM
New video about the Andromeda galaxy
Edward, That was a great video! Very informative. Jerry Taylor On Thu, Dec 18, 2025 at 4:52 AM Eduard
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New video about the Andromeda galaxy
Edward, That was a great video! Very informative. Jerry Taylor On Thu, Dec 18, 2025 at 4:52 AM Eduard
9:20 AM
Alex P
,
flavio camacho
3
7:02 AM
What Is : D. Kaminski " IF_Average " ??
Thank you much. On Thursday, December 18, 2025, 'Alex P' via Society of Amateur Radio
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What Is : D. Kaminski " IF_Average " ??
Thank you much. On Thursday, December 18, 2025, 'Alex P' via Society of Amateur Radio
7:02 AM
Ayushman Tripathi
, …
Stephen Arbogast
62
Dec 17
Cantenna feed dimensions & SDR comparison for H-line
Hi Stephen, Yes, I noticed the Virgo GitHub has been inactive for about 3 years. Despite that, I'
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Cantenna feed dimensions & SDR comparison for H-line
Hi Stephen, Yes, I noticed the Virgo GitHub has been inactive for about 3 years. Despite that, I'
Dec 17
Eduard Mol
, …
fasleitung3
11
Dec 17
Possible new water maser flare in W49
Yes, these are the ones I was referring to. I will have a closer look at the development of this
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Possible new water maser flare in W49
Yes, these are the ones I was referring to. I will have a closer look at the development of this
Dec 17
Dr. Rich Russel
Dec 17
ESA/Hubble/Webb Science Newsletter - December 2025
FYI Rich Newsletter Pre header Subscription preferences | Unsubscribe | View in browser Newsletter
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ESA/Hubble/Webb Science Newsletter - December 2025
FYI Rich Newsletter Pre header Subscription preferences | Unsubscribe | View in browser Newsletter
Dec 17
Jim Brown
,
Eugen Spierer
2
Dec 17
Sawbird + H1
... And they work so well! On Wednesday, December 17, 2025 at 4:27:31 AM UTC+2 Jim Brown wrote: Mine
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Sawbird + H1
... And they work so well! On Wednesday, December 17, 2025 at 4:27:31 AM UTC+2 Jim Brown wrote: Mine
Dec 17
Stephen Arbogast
Dec 16
Richard Feynman Cargo Cult
https://www.youtube.com/watch?v=RtR_ECkqblg
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Richard Feynman Cargo Cult
https://www.youtube.com/watch?v=RtR_ECkqblg
Dec 16
andrew....@googlemail.com
, …
Brad Thomas
4
Dec 16
Is 145mm or 165mm better diameter for hydrogen line cantenna? Is a can that is 160mm diameter x 165 mm height a good choice?
A simple modification for a long can would be to make a copper or brass plate close in size to the
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Is 145mm or 165mm better diameter for hydrogen line cantenna? Is a can that is 160mm diameter x 165 mm height a good choice?
A simple modification for a long can would be to make a copper or brass plate close in size to the
Dec 16
Mike Otte
, …
Conrad Cardano
7
Dec 15
Geminids very active
Hi I recorded meteors at 55.239 MHz. I see others at recorded meteors at 54.309 MHz. I will try that
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Geminids very active
Hi I recorded meteors at 55.239 MHz. I see others at recorded meteors at 54.309 MHz. I will try that
Dec 15
andrew....@googlemail.com
Dec 14
Peak of the Geminid Meteor Shower 2025 @ LRO
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Peak of the Geminid Meteor Shower 2025 @ LRO
Dec 14
Kimmo
, …
duncan campbell-wilson
18
Dec 13
Ku-band LNB with external reference: good for interferometry ?
I would bury the cables in the ground a meter down inside a conduit where the diurnal delta T is
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Ku-band LNB with external reference: good for interferometry ?
I would bury the cables in the ground a meter down inside a conduit where the diurnal delta T is
Dec 13
Andrew Thornett
Dec 12
Beginners guide to Linux for radio astronomers: How to open virtual environment in Ubuntu called ezra-env
Perhaps some of you are at that stage in your radio astronomy journey where you are trying to get
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Beginners guide to Linux for radio astronomers: How to open virtual environment in Ubuntu called ezra-env
Perhaps some of you are at that stage in your radio astronomy journey where you are trying to get
Dec 12
cgd
, …
Robert Meade
36
Dec 12
JA_IFAvg2csv_IFavg2.8_01Jun2501 Right Ascension Problem
Robert here from R3, I'm currently iterating on that 140mm number which was optimal for SNR to
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JA_IFAvg2csv_IFavg2.8_01Jun2501 Right Ascension Problem
Robert here from R3, I'm currently iterating on that 140mm number which was optimal for SNR to
Dec 12
Stephen Arbogast
,
Alfred Aburto
2
Dec 12
CH3OH and HCN in Interstellar Comet 3I/ATLAS Mapped with the ALMA Atacama Compact Array: Distinct Outgassing Behaviors and a Remarkably High CH3OH/HCN Production Rate Ratio
Methanol! How did that happen is the question! > On 12/11/2025 9:14 PM, 'Stephen Arbogast'
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CH3OH and HCN in Interstellar Comet 3I/ATLAS Mapped with the ALMA Atacama Compact Array: Distinct Outgassing Behaviors and a Remarkably High CH3OH/HCN Production Rate Ratio
Methanol! How did that happen is the question! > On 12/11/2025 9:14 PM, 'Stephen Arbogast'
Dec 12
Andrew Thornett
Dec 12
Possible good stainless steel pot for making cantennas for hydrogen line
I've found these on Amazon and ebay - this price is currently available on Amazon. 160mm diameter
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Possible good stainless steel pot for making cantennas for hydrogen line
I've found these on Amazon and ebay - this price is currently available on Amazon. 160mm diameter
Dec 12
cgd
,
Alex P
2
Dec 9
Elemental Hydrogen Velocities at Dec: -30
Convert to Galactic Long and use this chart
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Elemental Hydrogen Velocities at Dec: -30
Convert to Galactic Long and use this chart
Dec 9
Jan Lustrup
, …
flavio camacho
31
Dec 8
My Interfeometer sutup
Thanks so much that the stuff we newbe need. On Monday, December 8, 2025, 'b alex pettit jr'
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My Interfeometer sutup
Thanks so much that the stuff we newbe need. On Monday, December 8, 2025, 'b alex pettit jr'
Dec 8
Dr. Rich Russel
Dec 7
RTOP Uploaded
RTOP Dec 2025: Masers, Interferometry, Hybrid Optical/radio Telescope RTOP Dec 2025: Masers,
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RTOP Uploaded
RTOP Dec 2025: Masers, Interferometry, Hybrid Optical/radio Telescope RTOP Dec 2025: Masers,
Dec 7
Dr. Rich Russel
Dec 7
Fw: SARA Radio Telescope Observation Party (RTOP) Sunday 1900 UTC
RTOP starts at top of hour. Rich ----- Forwarded Message ----- From: SARA <pres@radio-astronomy.
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Fw: SARA Radio Telescope Observation Party (RTOP) Sunday 1900 UTC
RTOP starts at top of hour. Rich ----- Forwarded Message ----- From: SARA <pres@radio-astronomy.
Dec 7
Andrew Thornett
, …
Cathal O'Donghaile
11
Dec 7
Fw: [Nooelec] Re: Nooelec SAWBird H1 LNA Barebones
For anyone in Europe looking for this, amazon.de have 1 X barebones and 11 X the cased version in
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Fw: [Nooelec] Re: Nooelec SAWBird H1 LNA Barebones
For anyone in Europe looking for this, amazon.de have 1 X barebones and 11 X the cased version in
Dec 7
JERRY TAYLOR
,
Alex P
2
Dec 6
IF Average in the latest version of SDR#
This ? https://github.com/AP-HLine-3D/HLine3D/blob/main/21cm_Step2A_Software_Links_AirSpySDR%23_IFavg
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IF Average in the latest version of SDR#
This ? https://github.com/AP-HLine-3D/HLine3D/blob/main/21cm_Step2A_Software_Links_AirSpySDR%23_IFavg
Dec 6
Andrew Thornett
Dec 6
Retired astronomers
Now I am officially retired, here are some retired astronomer jokes.... Here are 20 astronomy-themed
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Retired astronomers
Now I am officially retired, here are some retired astronomer jokes.... Here are 20 astronomy-themed
Dec 6
Andrew Thornett
,
Alex P
2
Dec 5
Losses at mast head
The Value of intentionally degrading the performance of the System by adding noise from an option not
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Losses at mast head
The Value of intentionally degrading the performance of the System by adding noise from an option not
Dec 5
Jon Abel
,
Marko Cebokli
2
Dec 4
Signal Freqeuency & polarity collation in a fractal array - versus dish-based, pre-summed analysis.
Hello Jon! The dish is of course polarization sensitive, the polarization which it receives, is
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Signal Freqeuency & polarity collation in a fractal array - versus dish-based, pre-summed analysis.
Hello Jon! The dish is of course polarization sensitive, the polarization which it receives, is
Dec 4
Dr. Rich Russel
, …
Dimitry UA3AVR
4
Dec 4
SARA Journal - Call for papers/presentations/observations
Excellent! Thanks Dimitry On Thursday, December 4, 2025 at 08:38:20 AM MST, Dimitry UA3AVR <ua3avr
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SARA Journal - Call for papers/presentations/observations
Excellent! Thanks Dimitry On Thursday, December 4, 2025 at 08:38:20 AM MST, Dimitry UA3AVR <ua3avr
Dec 4
cgd
,
b alex pettit jr
15
Dec 4
21cm H Drift Scan Dec -15 RA 14.5 to 19.8
A few files from the RA0600 time frame
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21cm H Drift Scan Dec -15 RA 14.5 to 19.8
A few files from the RA0600 time frame
Dec 4
Jan Lustrup
, …
Eduard Mol
26
Dec 3
Could Jupiter be detected with an interferometer?
Hi Wolfgang and all, The flux density in that paper was apparently calculated for a standard distance
unread,
Could Jupiter be detected with an interferometer?
Hi Wolfgang and all, The flux density in that paper was apparently calculated for a standard distance
Dec 3
Conrad Cardano
, …
b alex pettit jr
13
Dec 3
Scope in a box
Thank you, Andy. I have been looking at ezRA for the last few days. The 3D image is interesting.
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Scope in a box
Thank you, Andy. I have been looking at ezRA for the last few days. The 3D image is interesting.
Dec 3
Alex P
,
Andrew Thornett
9
Dec 3
Discovery Dish Enhancement Test
Not sure that posted properly
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Discovery Dish Enhancement Test
Not sure that posted properly
Dec 3
Nathan
, …
Tyrone Bradford
10
Dec 2
Point-to-point radio link
Im a microwave network engineer but I focus more on implementation than design. I am not as familiar
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Point-to-point radio link
Im a microwave network engineer but I focus more on implementation than design. I am not as familiar
Dec 2
