/r/amateursatellites

Photograph via snooOG

A subreddit dedicated to artificial satellites that the everyday folk can interact with, but topics relating to all kinds of man-made satellites are welcome

A subreddit dedicated to artificial satellites that the everyday folk can interact with.

/r/amateursatellites

15,063 Subscribers

23

SSTV Event Upcoming! Just in time for the holidays and New Year, we're planning an SSTV event from December 25 to January 5. Celebrate with us with some great memories of ARISS 2024 in this series. It all starts 1 week from today. Watch for updates as the start time gets close.

2 Comments
2024/12/18
20:20 UTC

17

Meteor M2-3

I’ve been trying off and on for months to get Meteor LRPT images. I’ve been using one of those circuit board based 120° dipole antennas with zero success. I get images but they are terrible with mostly blank space. I finally built my own dipole out of 1/8 copper tubing and put it exactly 0.7 meters above a pair of reflectors I built for the old antenna and this odd what I got first try. I know it’s just LRPT but I’m insanely happy and proud of myself.

4 Comments
2024/12/18
16:17 UTC

14

Morning. Electro l3

2 Comments
2024/12/18
01:02 UTC

1

Sat trackers

I know this question probably gets asked a lot and I see a lot of dated responses, but what is the best satellite tracker for iOS? I’d like to find one that has the frequencies of at all possible

3 Comments
2024/12/16
21:10 UTC

31

First NOAA HRPT image with 160cm dish

As we aligned the dish by hand, there's still some interference in the picture. For the first time, we've achieved an SNR of over 20 dB! The rotator for this monster is still being planned. I'll post the setup tomorrow.

2 Comments
2024/12/16
20:20 UTC

11

Reed-Solomon question

This is from yesterday. Am I doing something wrong here? Seems like it was a good sync, properly demodulating. The 3 on the reed Solomon stayed red the entire time and I got zero products in the output. (I’m only vaguely aware of what reed Solomon means. I know it’s error correction, but I don’t know how it works.) Not bad quality or missing sections ofc images. No files whatsoever. It was working fine the day prior. I’m just trying to figure out if it’s my issue or if the satellite has an issue.

5 Comments
2024/12/16
16:12 UTC

2

telemetry

ive always wanted to try to decode telemetry on cubesats or other satellites does anybody know to decode fx noaa 18s telemetry and what kind of signal it uses

4 Comments
2024/12/16
11:26 UTC

10

Fengyun 2H - With sparkles

6 Comments
2024/12/15
04:52 UTC

44

Fengyun 2G - no sparkles.

2 Comments
2024/12/15
02:49 UTC

16

Morning. Electro l3

1 Comment
2024/12/15
00:53 UTC

15

Electro l3 09:42 (UTC) 14.12

0 Comments
2024/12/14
09:51 UTC

1

Help with finding satellites broadcasting < 140 MHz, visible in the Canadian high-arctic

Hi! Essentially, what the title says. After a lot of web sleuthing, the sats I know about are in the 137-138 MHz band: ORBCOMM, couple of NOAA sats, and Meteor M2 (which doesn't broadcast?) The location at which I'm interested in observing the satellites is 79d25.031' N, 90d46.041 W. Orbcomm is NOT visible at this location.

Any help would be appreciated!

7 Comments
2024/12/14
07:18 UTC

38

First Meteor M2-4 HRPT - hand tracking with a big dish is a bitc....

5 Comments
2024/12/14
06:26 UTC

5

SatDump Priority

Does anyone know if there is a way to set up SatDump so that it prioritizes Meteor M LRPT passes over NOAA APT passes? Or will it only prioritize the one with the highest elevation, like it does by default.

I missed a fantastic Meteor pass earlier because there was a simultaneous NOAA pass. I just forgot to go in an deactivate the NOAA autotrack before it happened and it was like 2 degrees higher. I want to get both of them routinely but I was really looking forward to this meteor pass since I am very new to meteor decoding and I am still practicing with it.

3 Comments
2024/12/14
04:06 UTC

10

GOES 16 Band 09 Water vapor - December 1 through Dec 13,2024 usradioguy,com

0 Comments
2024/12/13
19:53 UTC

26

u/elmarkodotorg mega projection rendered in 3d- All the credit for the mega projection goes to the group list on his post

3 Comments
2024/12/13
18:23 UTC

14

Megaprojection Collaboration - 30th Nov/1st Dec 2024 final results

Edit: /u/creinemann with the assist! https://www.reddit.com/r/amateursatellites/s/3n07uAe3FY

I'm delighted to be able to bring everyone the results of the final weekend of the Megaprojection from a few weeks ago, courtesy of the Facebook APT group and the DerekSGC Discord server. Apologies for the delay in getting this posted - we were originally going to do a 32000 x 16000 version of the image so that it was as close to the native resolution of HRPT as possible (1.1 km/pixel), but sadly we've just run out of time and we all have other things on. I made a 16000 x 8000 version of the weekend's contributions as it went on, so we'll go with that - the thought of recompositing and merging together 65 images again when I didn't save the original configuration of what went over what is not a nice one! In future we'll go right to 32k at the start.

Sadly there was a bit of an issue with the weekend: NOAA 18 and Meteor M2-4 were overlapping a huge amount. We definitely should have picked up on this before the weekend arrived, and we'll do better at trying to spot this kind of clash in the future. This overlap meant that a few stations received poor/noisy images, leading to arguably less space covered on this projection than in previous ones (although there were some areas where we definitely got more). We did a 221 projection again - in the future we may try some IR captures, meaning we can use more overnight shots and get a larger collection of potential data to use. The images were brought into GIMP as before.

I do have some images and video people took of their capture work, so I will try to make those into something nice.

So, here's the large 16000 x 8000 version (annoyingly includes one dodgy blend that I forgot to do near the Caspian Sea): https://drive.google.com/file/d/1AbsKG8HaCBZT02ZvRdloelAOWuezIy7Q/view?usp=drive_link

And here's the small 8000 x 4000 version: https://drive.google.com/file/d/1AjqcXTX7NwOz1kDsrvxmzYlotGK4osme/view?usp=drive_link

And finally, here is a 1920 wide version for desktop use if you want:

Desktop version, 221 composite, 1920 x 960

It goes without saying that we still want to get people into this kinda thing going forward, especially if in an area that we don't have good coverage in (so Africa, mainly). We would also encourage folk who live near each other to do more of this kinda thing and collaborate and help each other out with captures. If you've never done this before the barrier to entry is incredibly low for the VHF stuff, and even the L-band stuff isn't THAT bad. A secondary goal for this project was always to help people improve their captures and maybe get people doing it who hadn't tried before.

Finally, here is a full credits list, not just for the final weekend, but all previous weekends. Folk whose images were not used or who had issues are still listed here, and we are grateful to them for their assistance.

Europe

* Meti - Also arranged the process for file submissions and did a lot of work with tutorials and assisting people with captures and uploading
* Slawek Kilmek-Wojsa - Helped a great deal with coordinating people/submissions from the Facebook APT group
* ElMarko 2M0IIG - Compositing/Blending of final image
* LEDFlighter DO8JK
* t0nito
* Defective
* Matthias Peeters
* King_Wing34
* Digitelektro
* vilibald_cz

Asia

* nishikazu
* Juscent DW9KRW
* Emitter
* tanmanenator
* Mifa

Australia

* Ben Seaton-Klerk
* Albatross

Africa

* Ashwin Mandary 3BGGL

North/Central America

* Tihomir Kiko Zaric VA3TZA
* JCbrg
* Juan Jesus Ramos Viciedo CM6JVR
* Nico Smith KC1VPU
* phantomsghost

South America

* Mario Riffel LU1JCJ
* Marcio Belucci PU2YYB
* Rex Rigel OA4DEX

3 Comments
2024/12/13
12:05 UTC

43

After four months I was able to get the setup working again. Electro l3 09:42 (UTC)

2 Comments
2024/12/13
09:51 UTC

31

GOES 16, December 6 through December 12th 2024

5 Comments
2024/12/12
22:53 UTC

4

SPID rotors

So i purchased this new spid ras rotors with rot 2 prog controller but the problem is it moves in azimuthal plane but fails to do a pulse count for the same , I tried doing the same setup with my other rotor and everything works fine but this one the pulse is just stuck

0 Comments
2024/12/11
10:57 UTC

16

METEOR-M N2-4 2024/12/09 03:14 pst

METEOR-M N2-4 2024/12/09 03:14 pst @Nooelec NEsdr v5, diy #QFH #Satdump

1 Comment
2024/12/09
17:36 UTC

3

I want to be able to track freight trains to know ahead of time when they'll pass my house

Is there a way to do this with picking up radio (or other) signals? I've never done anything with antennas before, but the idea was mentioned in another thread so thought I'd ask here. My goal would be to know when they're coming so I can set up my photography equipment and catch cool videos like this: https://www.youtube.com/watch?v=PRacAPHqJQM

7 Comments
2024/12/09
14:46 UTC

20

7th December M2-4 pass

One of the best captures ive got

6 Comments
2024/12/08
15:15 UTC

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