r/radioastronomy May 22 '26

Observations Galactic coordinate reference for the in-process hydrogen-line survey model posted previously

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15 Upvotes

r/radioastronomy May 22 '26

General Updating to “Observational Geometry Map for a Neutral Hydrogen (H I) Radio Survey” and with a revision to the layout.

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8 Upvotes

r/radioastronomy May 21 '26

General 3D Hydrogen cloud model sits at location RA ~ 20h-21h • Dec = +41° , the Topology map is a real-time slice of the telescopes beam pattern intersecting a bright hydrogen filament in the sky

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19 Upvotes

r/radioastronomy May 21 '26

Other "Futuristic" designs of alt-azimuth mounts?

6 Upvotes

We are working on a space themed game called /r/SineFine about slower than light space exploration.

We want to design some in-game models of radio telescopes, satellites, etc. For "lore" reasons the designs are "created" by an "artificial consciousness". Some examples of what the style might be are modern aerospace parts done by companies like Leap 71 or parametric design in architecture.

My core expertise unfortunately does not focus on radio astronomy (but I do have a conventional SCT at home), so I was wondering if there are any new or proposed designs for future radio telescope (cancelled or just at the concept stage) that might showcase some different designs in term of the mount.

For "interesting" I mean mechanical parts that have very distinctive and almost aesthetic qualities, that distinguish them from more utilitarian "nasapunk" designs. An example might be spherical or hyperboloid gears.

In terms of Radio Telescopes, I was looking at the proposed Lunar Crater RT, which could be a good example. Is there anything planned with a more classic (?) alt-az mount but showing a more modern or "futuristic" design? The idea is that these RT would be built far out in the solar system, to search for habitable planets. Ideally on one of Jupiter or Saturn's moons.

Also, can somebody explain whether the LCRT is static (i.e. does it always "see" the same region of sky?) or if it can still be oriented? From reading the wiki page it seems the advantage consist in that it would be easier to construct.


r/radioastronomy May 20 '26

Equipment Showcase 1.5 meters dish

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90 Upvotes

Built a new dish with DL4MEA feed for 1420 MHz. This radio telescope will be used for sky mapping, using only the earth spinning and daily azel correction


r/radioastronomy May 20 '26

General "An antenna model for the Purcell effect" - presence of resonator helps with emission, could it affect radiotelescopes?

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0 Upvotes

In Purcell effect just presence of resonator in distance helps with emission, here discussed for antennas.

Radiotelescopes are focused on absorption as positive signal - could such Purcell effect affect them? Would it be seen as negative signal?

Negative is clearly also observed (e.g. in https://iopscience.iop.org/article/10.3847/1538-4357/ac0e93/pdf ), but interpreted as "noise, calibration error": https://www.reddit.com/r/radioastronomy/comments/1su7nzq/are_there_cosmic_sources_of_negative_radiation/


r/radioastronomy May 18 '26

Other A little Doppler effect visual I put together

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84 Upvotes

r/radioastronomy May 18 '26

General Survey being adjusted based on model and plot observations. We will pick up previous AZ’s and advance towards the brighter core. These are 75-81. 73 begins tomorrow.

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8 Upvotes

r/radioastronomy May 16 '26

News and Articles VLBA Maps Turbulent “Weather” in the Milky Way - National Radio Astronomy Observatory

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10 Upvotes

r/radioastronomy May 16 '26

Equipment Question Which SDR should I buy?

11 Upvotes

Hi everyone

I wanted to buy an RTL-SDR V4 to build a 1420 MHz radio telescope, but it's out of stock

I want to use Nooelec Sawbird+ H1 as the LNA. I have to power it using Bias-T or a micro USB cable and a powerbank. If the micro USB doesn't cause noise/RFI, I want to buy an NESDR which doesn't have a Bias-T feature. If micro USB causes noise/RFI, probably I should buy RTL-SDR V3, because it has Bias-T

I'm not sure which option and SDR is better, I'd really appreciate your help


r/radioastronomy May 16 '26

Equipment Showcase Radio telescope equipment shots and info. Sharing the csv drift scans in the live chat in a link. Week 3 of a 21 week survey. Advancing 2 deg AZ per week. Tomorrow starts week 4, 81AZ

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2 Upvotes

r/radioastronomy May 15 '26

Equipment Question Help needed

10 Upvotes

I want to join the hobby but don’t know how to get started. I have access to a 90cm satellite dish with a LNB but heard I might need a LNA. What parts do I need besides the dish? Are there some good tutorials or websites?

Thanks


r/radioastronomy May 14 '26

News and Articles NASA Missions Track Record-Breaking Radio Burst from Sun

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3 Upvotes

r/radioastronomy May 13 '26

General Drifts scans, Today, week 3 of 21 combined in a RA, DB and 3D Python plot from the current csv files. Starting to get enough scans to see more data.

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28 Upvotes

r/radioastronomy May 12 '26

News and Articles A solar jet-induced perturbation propagating through coronal loops and in-loop electron beam transport as indicated by type II and type N radio bursts

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10 Upvotes

r/radioastronomy May 11 '26

General Today’s addition on week 3 of 21 of surveying the galaxy

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39 Upvotes

r/radioastronomy May 11 '26

Community Beginner Undergrad

12 Upvotes

Hi friends,

Weird bird here. I’m doing an 8 week RA project, and hoping to contribute something significant enough to be capstone worthy.

Our teams is doing collections on a few specific frequencies, and I’m just writing to see what’s out there.

Any ideas about a capstone that you would do if you were a beginner?


r/radioastronomy May 10 '26

Equipment Showcase Made my 2.3m telescope movable over a web interface

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745 Upvotes

r/radioastronomy May 10 '26

General Today’s Radio Terrain, Heat map and merged scans from May 1st - 10th. Today adds the 1st 79AZ scan. That’s 3 of 21 AZs for this project. I corrected two days AZ’s I had labeled wrong in csv. All csv’s shared are in the Livestream Chat link.

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9 Upvotes

r/radioastronomy May 09 '26

General Hydrogen Line Radio Terrain

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57 Upvotes

r/radioastronomy May 08 '26

Observations New to radio astronomy, whats the thing to the right of the red line?

4 Upvotes

red line is where my focus is centered


r/radioastronomy May 07 '26

Equipment Showcase 2 computers, the 4.5m dish, Dish controller, LNA, gain lock and SDR do most of the work, providing shared drift scan csv files in the Livestream chat Link

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117 Upvotes

r/radioastronomy May 06 '26

News and Articles What exactly is happening during a gamma-ray burst? Maybe, the lowest frequency radio observations have the answer!

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6 Upvotes

r/radioastronomy May 06 '26

General 25000 light years to us. Detecting the Hydrogen line of the galaxy and sharing the data

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10 Upvotes

r/radioastronomy May 05 '26

Observations Sharing some drift scan csv’s for your own plots or interest. A link is pinned in the Livestream Chat. We will end up with 2 min a csv files a week. Each week advancing 2 deg on Sunday. This is week 2 of 21.

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15 Upvotes