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The Scintillating Crab
© Richard Fallows The Crab Nebula is a supernova remnant, and a strong radio source, which contains at its heart a pulsar which was amongst the first discovered, in 1968. As a compact source, it is...
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Today's Colloquium: ESO - Present and Future
© Tim de Zeeuw ESO is an intergovernmental organization for astronomy founded in 1962 by five countries. It currently has 14 Member States in Europe with Brazil poised to join as soon as the Accession...
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A site visit to WSRT, EMBRACE and LOFAR
© NL SKA Office The week of SKA meetings (mostly related to aperture arrays) in early April was concluded by a site visit to ASTRON's observatories. The group was joined by Monique Sluiman, our new...
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At the Instituto Argentino de Radioastronomia (IAR), a personal account
© Rob Millenaar My connection with the IAR goes back to 2005 when Bou Schipper and I visited the country to carry out the RFI monitoring campaign for their SKA site bid at the time. The IAR is the home...
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APERTIF LO-Generator Control board
© ASTRON On several ASTRON boards, a PIC-controller is used to control the hardware. Other options would be to use a Raspberry Pi or an FPGA. The advantages of the chosen PIC microprocessor are:...
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A special Bospub lunch for the pulsar group
© Gemma Janssen The re-opening of the Dwingeloo Telescope by Nobel prize winner Joseph Taylor had an added bonus for the ASTRON pulsar group. As prof. Taylors work is inspiring to all of us, we invited...
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Proven reliability of large structure simulations
© B. Fiorelli The SKA Low Frequency Aperture Array will consist of large arrays of antennas. Each station, as we call them, will be populated by 256 antennas, covering an area with a diameter of 35m....
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Evidence for magnetically arrested accretion disks across the black hole mass...
© Eric Clausen-Brown (MPIfR) Black hole accretion disk models typically assume that the magnetic field pressure is much less than the plasma pressure. However, simulations that include an abundance of...
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Girl's Day 2014: Finding the future Engineer PowerWoman
© Adriaan Renting/Ilse van Bemmel/Harm-Jan Stiepel On April 24th ASTRON, JIVE, NOVA and CAMRAS organised the annual Girl's Day. The main purpose of this event is to immerse girls in their early teens...
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Girlsday Drawings
© ASTRON + Girlsday-Girls 2014 As every year, ASTRON has participated in the yearly Girlsday. Today we present the wonderful artwork that the Girlsday-Girls have produced at ASTRON during live...
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A-MKID warm mirrors for SRON
© Johan Pragt The NOVA-ASTRON team recently produced 2 mirrors for the A-MKID test setup of SRON. These mirrors are called warm as they are applied at the room temperature part of the test setup, in...
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MSSS-HBA observations are complete!
© MSSS / ASTRON The Multifrequency Snapshot Sky Survey (MSSS) is LOFAR's first large-scale imaging survey, and has played a large role in focusing LOFAR development efforts. Since early 2013, the...
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Today's Colloquium: Gamma-Ray Bursts from GeV to GHz and Beyond
© NASA/GSFC Gamma-ray bursts are a broadband phenomenon, with emission detected across the electromagnetic spectrum from low-frequency radio waves to high-energy gamma-rays. Besides this extremely...
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The Low Noise Tile: Full array results
© ASTRON In our series of daily images (18-12-2013 ,21-02-2014 and 21-03-2014) on the progress of the Low Noise Tile (LNT) project, today's image shows the measurement results for the Medium Size Tile...
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Tribute to Wubbo Ockels
© Nico Vermaas As a 14 year old boy I had to make a choice about the direction of my education. I dreamt of the stars and wanted to become an astronaut. So I decided to write a letter to Wubbo Ockels,...
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Presidential Decoration for Raffaella Morganti
© ASTRON At a ceremony held yesterday at the residence of the Italian Ambassador, the Head of the Astronomy Group of ASTRON, Prof. Raffaella Morganti, received a Presidential Decoration awarded to her...
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Artificial Intelligence finds six new pulsars in Arecibo data.
© UBC In the modern era of big data, many fields of astronomy are generating huge volumes, the analysis of which can sometimes be the limiting factor in research. Fortunately, powerful data-mining...
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MATISSE LM Cold Optics Bench at MPIA
© NOVA Optical Infrared Instrumentation group After delivery of the first Cold Optics Bench (COB) of MATISSE in October last year, this spring also the second COB has been shipped to consortium partner...
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Close-up of the Moon
© R. ter Horst Under a beautiful and quiet sky I took this image of the Moon in the evening of April 5 with a homemade 250 mm Schmidt Cassegrain telescope and an ASI120MM camera. About 2000 frames were...
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Dutch Camelopardalids
© Felix Bettonvil It has been predicted that, during the night of May 23/24 2014, a new meteor shower should appear. It would originate from the comet 209P/LINEAR, which was discovered in 2004. The new...
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