Space, Satellites, Signals.
Utrecht, The Netherlands
Joined August 2009
- Tweets59
- Following1.2K
- Followers546
- Likes1.6K
Thomas Telkamp retweeted
We think a Tianwen-2 manoever happened on 7 June, as expected. With the Bochum telescope (@amsatdl) and the Dwingeloo telescope, we observe that a) Tianwen-2 is close to the asteroid on the sky and b) the line-of-sight velocity change (Doppler) now almost matches the asteroid's.
ALT Sky plot showing the location where the Dwingeloo telescope measured the Tianwen-2 spacecraft, with a 0.1 degree field of view. On 7 June, the spacecraft is apparently within 0.1 degree of the asteroid.
ALT Frequency residual w.r.t. Kamo'oalewa, with an estimated base freq of 8428.201 MHz. On 4-6 June the residual is between 13800 and 14300 Hz, increasing. From 7 June, the line is almost flat, changing only a few Hz in hours. This shows the change in line-of-sight velocity is now close to that of Kamo'oalewa.
Thomas Telkamp retweeted
マジのマジのマジで超小型人工衛星RSP-03（ハモるん）チームはDowingelooさんの方向に足を向けて眠れないので
五体投地しに行きました
@PI9CAM
超小型人工衛星RSP-03"ハモるん"宇宙で作曲に引き続き、黒田有彩さん@KUROARI_RTTS 宇推くりあさん @clearusui バージョンのデジトーカ、そしてSSTVの送信を行いDowingeloo天文台さんに受信いただきました。audioで聴けます。黒田さんデジトーカ→宇推さんデジトーカ→SSTVの順。
#HAMORUNnow #RSP03
Thomas Telkamp retweeted
After fixing this mistake, the frequency difference is on the order of 1 Hz. This is about 0.7 ppb, so it is within the accuracy that we could expect for the GPSDO at Bochum. So mystery solved!
ALT A plot with the same title as before: Frequency difference between Bochum and Dwingeloo (with Doppler for Mare Crisium subtracted). The curve is now different. It is a noisy ramp that increases from -1.75 Hz to 0.75 Hz.
Thomas Telkamp retweeted
Dwingeloo to Venus: Report of a Successful Bounce
hackaday.com/2025/03/28/dwin…
Thomas Telkamp retweeted
We used the historic Dwingeloo telescope to bounce a signal off the surface of Venus, and receive its echo! This marks only the second time that amateurs have achieved an 'EVE' (Earth-Venus-Earth) bounce. Venus was about 40 million kilometers from Earth.
camras.nl/en/blog/2025/first…
ALT Graphs showing EVE detections: 5.4 sigma for Dwingeloo-Dwingeloo, 8.5 sigma for Dwingeloo-Stockert, 9.2 sigma for combined Dwingeloo/Stockert
Thomas Telkamp retweeted
We received Voyager 1! Not bad for a telescope from 1956 and spacecraft from 1977 📡🛰️
Read our blog at camras.nl/en/blog/2024/dwing…
ALT Screenshot from gnuradio, showing live signals from Voyager 1 as received with the Dwingeloo Radio Telescope on 2024-1208T09:1958Z
Thomas Telkamp retweeted
We're thrilled to announce we've been awarded a Space Services contract by @lacuna_space to build and operate six satellites for a dedicated IoT constellation, with the opportunity to scale to dozens of satellites.
Read more: spire.com/press-release/spir…
Boundary-challenging Beethoven recording by Shunske and Shuann. I've heard them perform some of these sonatas live in Leiden, and this was unexpectedly enlightening.
But, they seriously need our help to finish this project. Please have a look at:
voordekunst.nl/projecten/162…
Thomas Telkamp retweeted
📰 📣 Exciting news: Together with @viasat and @lacuna_space, we have demonstrated breakthrough NGSO #IoT satellite connectivity which could pave the way for a range of IoT and direct-to-device (#D2D) satellite services.
Read more: omnispace.com/omnispace-and-…
Making retro plots of @radiotelescoop pulsar data. Individual pulses, quite illuminating to see the variation.
Thomas Telkamp retweeted
Busy recording a workshop for @thethingsntwrk The Things Summer Academy. Tune in next week and see how you can test the range of your #LoRa gateway using the #Arduino MKR WAN 1300 and @ttnmapper.
hopin.com/events/the-things-…
Thomas Telkamp retweeted
Celebrating successful launch of our latest #iot space gateway🚀🚀
Contact with the satellite made earlier today 🎉
Many thanks for supporting us in our journey for #LoRaWAN connectivity everywhere!
Launched with @Heads_InSpace onboard @SpaceX Transporter 2
Thomas Telkamp retweeted
Another successful satellite launch for @lacuna_space today!🍾🎉
Bringing #iot connectivity everywhere!
Onboard the #Soyuz-2, receiving telemetry as expected. Stay tuned for more info! with @gk_launch (video credit) @opencosmos
Thomas Telkamp retweeted
Satellites 🛰️, birds 🐦 and machine learning 🧮 in our latest blog post where we count bird species using a microcontroller and send the results to @lacuna_space satellites. edgeimpulse.com/blog/bird-cl… #TinyML #MachineLearning @arduino @thethingsntwrk
Thomas Telkamp retweeted
We are so proud to have been part of this amazing mission! Thanks @Lacuna_Space and @SagaArchitects for the opportunity, and @LEGO_Education and @ESA for the support! #SPIKEPrimeInSpace #ARTES
Two men in an arctic expedition
a moon like habitat by @SagaArchitects
and a Lego Rover!
Connected by SpaceTech denMACH, @lacuna_space
Read our blog bit.ly/3bZNoFF
Join us at #TheThingsConference for more cool use cases with @thethingsntwrk
Thomas Telkamp retweeted
Two men in an arctic expedition
a moon like habitat by @SagaArchitects
and a Lego Rover!
Connected by SpaceTech denMACH, @lacuna_space
Read our blog bit.ly/3bZNoFF
Join us at #TheThingsConference for more cool use cases with @thethingsntwrk
Thomas Telkamp retweeted
We've finished commissioning of our latest #space gateway early Jan. continuing on our impeccable record for #LoRaWAN performance on-orbit 🎉🍾
Enjoy the last moments we saw it after being released into space. Launched with #ISRO @NanoAvionics
Read more bit.ly/3qzFxCH
Thomas Telkamp retweeted
The #LoRaWAN world record broken twice in a single experiment during The Things Virtual Conference!
Read the story of the incredible new distance record set by Thomas Telkamp of @lacuna_space: ow.ly/hIZv50zlsv3
Thomas Telkamp retweeted
We tracked the high altitude balloon launched by @telkamp @lacuna_space during @thethingsntwrk #thethingsvirtualconference and guess what: a new LoRa world record of 832km!!
ttnmapper.org/track/?experim…
goo.gl/maps/RSaMXNgPH8pHgrJy…
#stayhome
