BRAMS Newsfeed
Fireball above Belgium on 17 April 2023 at 19h22 UT
A fireball was observed by many people above Belgium on 17 April 2023 at 21h22 LT. It was detected also by two FRIPON cameras located in Belgium. See this link for more details.
It was also detected by most BRAMS stations. Here are two examples of spectrograms recorded at our stations in Halle-Zoersel and at the Planetarium
BRAMS annual meeting 2023 at MIRA in Grimbergen
The BRAMS annual meeting 2023 was organized on 15 April at Volksterrenwacht MIRA in Grimbergen. Thanks to Philippe Mollet for welcoming us again.
Below you will find the presentations given that day :
- Hervé Lamy : status of the BRAMS network and perspectives
- Antoine Calegaro : the new BRAMS website and functionalities
- Joachim Balis : Meteoroid trajectory and speed reconstruction using BRAMS data
- Hervé Lamy : Observability Function of the BRAMS forward scatter network
- Stijn Calders : Recent updates about the Radio Meteor Zoo
- Paul Roggemans : status of CAMS-BeNeLux and GMN
- Hervé Lamy : FRIPON-BE : status and perspectives
Project SORBET funded by BELSPO in response to Infra-FED call
The project SORBET (Services and OpeRability of the BRAMS nETwork) has been accepted in response to the INFRA-FED call from BELSPO.
The project aims at :
- upgrading and expanding the BRAMS network by increasing the power of the current transmitter by 5-6 dB, by adding a second interferometer to the network, and possibly by adding a second transmitter in the North of Belgium
- providing services in terms of meteoroids trajectory and speed and later on providing associated orbital parameters
- providing MLT (Mesosphere and Lower Thermosphere) measurements such as temperature and wind speed
Problems with BRAMS transmitter temporarily solved
On March 28, the power amplifier was replaced by the old repaired one which operated during nearly 10 years. Since then, the transmitted power has been stable again and is around 135-145 Watts depending on local temperature. Note that this measure is now done every minute and is obtained inside a directionnal coupler. It is a power integrated over a large bandwidth and therefore includes also a small contribution of the power transmitted in the harmonics at frequencies where the antenna is totally unadapted (power being then reflected). The total transmitted power at 49.97 MHz is therefore slightly lower by a few Watts.
We have plans to buy a new power amplifier soon and transmit more power. We also plan to buy a cabin controlled in temperature for a better stability. See other news
BRAMS annual meeting 2023 & Problem with the BRAMS transmitter
BRAMS annual meeting
As a reminder, we will have our BRAMS annual meeting on Saturday 15 April at MIRA in Grimbergen.
We will welcome participants from 09h20 and plan to start the presentations near 09h45-10h.
Preliminary program :
- Hervé Lamy : status of the BRAMS network : recent developments
- Antoine Calegaro : the new BRAMS website and functionalities
- Joachim Balis : Meteoroid trajectory and speed reconstruction using BRAMS data
- Stijn Calders : Recent updates about the Radio Meteor Zoo
- Hervé Lamy : FRIPON-BE : status and perspectives
- Hervé Lamy : quick presentation of the IMC 2023 organized at the Euro Space Center
More details coming soon. Please, if you haven't done so, let me know if you plan to attend
New problem with the BRAMS Tx
In the last few days, the transmitted power has fluctuated a lot. Since our last visit last month, we are now
able to monitor this power every minute but the cause of this problem is still unknown. So do not be surprised
if you do not see signals or weaker ones than usual at some moment. We will go to Dourbes tomorrow and
replace the material if needed. We will keep you up-to-date.
Kind regards,
Hervé & the BRAMS team
Presentations at the IMC 2022 in Porozslo, Hungary
H. Lamy and J. Balis have attended the International Meteor Conference (IMC) 2022 organized in Porozlo in Hungary.
Joachim presented part of his work on "Reconstructing meteoroid trajectories using forward scatter radio observations from the BRAMS network" while Hervé presented "Observability Function of the BRAMS network".
The papers submitted for the proceedings can be found "here" and "here".
MOMSTER in the press
The MOMSTER project has been presented in the EOS / iedereenwetenschapper website with an article "Vallende sterren in de klas"
