Thomas Telkamp @telkamp
Space, Satellites, Signals. lacuna.space Utrecht, The Netherlands Joined August 2009-
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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.
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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
@amsatdl @radiotelescoop @SternwarteBO It was a great day! We tracked Voyager-1 Doppler for more than 4 hours. During that time, it stayed well within 1 Hz of predicted values from the published trajectory.
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!
Thomas Telkamp retweeted
Dwingeloo to Venus: Report of a Successful Bounce hackaday.com/2025/03/28/dwi…
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/f…
@ea4gpz @planet4589 @amsatdl @fireflyspace Dwingeloo raw IQ data of the landing at data.camras.nl/bgm1-landing/
@amsatdl @radiotelescoop @NASA @NASAVoyager @NASAJPL @SternwarteBO @dh2va Nice setup! When Voyager 1 was still in our backyard with 4.5 dB more signal 😀
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/d…
@amsatdl Live tracking Tianwen-1 carrier frequency, interesting jump a few minutes ago, was also visible in the Bochum stream.
@ibelings SDR-14 spotted in the wild...
@JonaLendering @LucasEllerbroek In de @radiotelescoop laten we dit live zien, een bewegende versie van het plaatje hierboven! En we leggen uit wat een pulsar is. Deze zomer rondleidingen op zondag en sommige woensdagen.
@tj_astro @LooStann @coastal8049 @moddedLimes The s-band setup in Dwingeloo is far from ideal, amongst other things, the feed is not in the focus. Based on a single scan over Cygnus A we would estimate the g/T for the entire chain to be around 27 dB/K for LHCP. For RHCP it will be lower (no data).
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/…
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/1620…
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.
@DegenerateConic @DegenerateConic we observed Artemis1 leaving DRO on Dec 1st by measuring Doppler with @radiotelescoop, but we're not sure how to interpret the 'oscillations' in frequency just before and after the burn. Are these real physical speed changes, or artefacts of the uplink/tracking?
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