- Nov 9, 2015
- The C-BASS team is saddened by the
death of Professor Rod Davies CBE FRS (8 January 1930 – 8 November
2015), former Director of Jodrell Bank Observatory and former President of the Royal
Astronomical Society. He was a great supporter of C-BASS and
contributed significantly to the project in many ways.
- April 7, 2015
- The observations for the northern C-BASS survey have now been completed.
- December 1-5, 2014
- Results from C-BASS were reported at the conference Planck 2014: The microwave sky in temperature and polarization in Ferrara, Italy. Stephen Muchovej presented Early Results from C-BASS.
- June 23, 2014
- Melis Irfan and Luke Jew will present papers on C-BASS at the UK National Astronomy Meeting in Portsmouth this week.
- June 23, 2014
- Survey observations with the CBASS-S antenna have started at Klerefontein.
- June 2, 2014
- The receiver has been installed on the CBASS-S antenna at Klerefontein.
- May 18, 2014
- The receiver for CBASS-S has arrived at Klerefontein. A team from South Africa and Oxford are preparing it to start the southern survey observations.
- May 16, 2014
- The receiver for C-BASS south is now on its way across South Africa to its observing site at Klerefontein near Carnarvon in the Karoo (Northern Cape Province), following successful commissioning at the Hartebeesthoek Radio Astronomy Observatory (HartRAO).
- March 20, 2014
- Congratulations to Luke Jew on winning the second Oxford Science Slam with a performance entitled How C-BASS will help us understand the very first moments of creation. Science Slam UK “travel across the country to find the freshest young minds who can take an audience by storm, armed with nothing but their own research and ten minutes on the clock. In a battle of humour and wit, our insatiable slammers must lay their science on the line for the adoration of the audience and the chance to win the coveted slam Champ Boxing Gloves!” Watch the video.
- March 2014
- The receiver and software of the Southern C-BASS telescope are being put through final tests at Hartebeesthoek Radio Astronomy Observatory (HartRAO), and planning is under way to install the receiver at Klerefontein in the Karoo later this year. For more details, see the report in SKA South Africa eNews.
- March 1, 2014
- The paper The C-Band All-Sky Survey (C-BASS): Design and implementation of the
northern receiver has been published in Monthly Notices
- December 20, 2013
- C-BASS is on wikipedia.
- December 5, 2013
- Rach Bhatawdekar (University of Manchester) was awarded a MSc by Research with Merit for her dissertation on Observations with C-BASS, focussing on the analysis of polarization calibrators.
- October 26, 2013
- A paper entitled The C-Band All-Sky Survey (C-BASS): Design and implementation of the
northern receiver by O.G. King, Michael E. Jones, E.J. Blackhurst, C. Copley, R.J. Davis,
C. Dickinson, C.M. Holler, M.O. Irfan, J.J. John, J.P. Leahy, J. Leech,
S.J.C. Muchovej, T.J. Pearson, M.A. Stevenson, and Angela C. Taylor has been submitted to Monthly Notices of the Royal Astronomical Society (accepted 4 December, 2013). A preprint is available at http://arxiv.org/abs/1310.7129.
- October 10, 2013
- Mr Luke Jew has joined the C-BASS project as a D.Phil. student at Oxford University.
- October, 2013
- Charles Copley successfuly defended his Oxford D.Phil. thesis on C-BASS. Congratulations Charles!
Charles is now a Research Associate at the Square Kilometre Array Project in South Africa, where he is managing the day-to-day activities of the southern C-BASS project in South Africa.
- September 17, 2013
- Commissioning of the southern C-BASS receiver at HartRAO continues with beam measurements using an artifical source. Meanwhile the infrastructure at Klerefontein (Karoo) is being readied to install the receiver after completion of commissioning at HartRAO.
- July-September, 2013
- Mr Thomas Armitage worked on C-BASS data analysis as a summer undergraduate student at the University of Manchester. He studied the beam profile of C-BASS north and investigated whether daytime observations can be cleaned of solar sidelobes sufficiently for inclusion in the sky maps.
- August 30, 2013
- Dr H. Cynthia Chiang and Professor Jonathan Sievers of the Astrophysics and Cosmology Research Unit ( ACRU), University of KwaZulu-Natal, Durban, South Africa have joined the C-BASS project. They and their PhD student Heiko Heilgendorff will be playing a leading role in the southern C-BASS survey as well as participating in the data reduction and analysis of the whole survey.
- August 20, 2013
- Dr Michael Peel of the University of Manchester has joined the C-BASS project.
- August 22, 2013
- Tim Pearson presented Preliminary results on AME from C-BASS at a Workshop on AME (Anomalous Microwave Emission) at Caltech. This was based on work done by Matthew Stevenson for his thesis.
- July 12, 2013
- Matthew Stevenson successfully defended his Caltech PhD thesis on Observational and Theoretical Advances in Cosmological Foreground Emission. Congratulations Matthew! On August 1, Matthew left the C-BASS project and took up a position as Senior Algorithm Architect at Synaptics, Inc., in San Jose, California.
- June 14, 2013
- Clive Dickinson makes a presentation on C-BASS at CMB2013 in Okinawa, Japan.
- June 14, 2013
- C-BASS makes a brief appearance in the new Superman movie Man of Steel. This scene was filmed at OVRO on February 3, 2012.
- April 2, 2013
- Melis Irfan presents a poster on C-BASS and foreground separation at the conference The Universe as seen by Planck held at Noordwijk, The Netherlands.
- March 27, 2013
- The SKA South Africa Project issues a press release to announce the start of work to commission C-BASS-S in South Africa.
- March 21, 2013
- ESA and NASA release the first full-sky maps from the Planck satellite, in intensity only; polarization maps are expected in 2014. The C-BASS polarization map will be essential for fully understanding the Planck polarization results.
- February 25, 2013
- The C-BASS-S receiver arrives in HartRAO and is met by Jamie, Charles, and Angela. See the commissioning blog.
- February 16, 2013
- C-BASS-N is back on the air after repair of the receiver cold-head.
- February 12, 2013
- The completed C-BASS-S receiver is shipped from Oxford to HartRAO for commissioning.
- November 28, 2012
- Mike Jones makes a presentation on C-BASS at the meeting on Polarized Foreground for Cosmic Microwave Background, MPIfA, Garching, Germany.
- September 28, 2012
- Rachana (Rach) Bhatawdeka, a new MSc student at Manchester, is now working on C-BASS.
- July 4-6, 2012
- C-BASS collaboration meeting in Oxford.
- June 6, 2012
- Matthew Stevenson gives a talk about C-BASS at the CASCA-12 meeting of the Canadian Astronomical Society in Calgary, Canada.
- February 13-17, 2012
- C-BASS presentations at the
meeting Astrophysics from the radio to the sub-millimetre:
Planck and other experiments in temperature and polarization
in Bologna, Italy
- January 8, 2012
- Oliver King presents a poster about C-BASS at the American Astronomical Society meeting in Austin, Texas.
- July 27-29, 2011
- C-BASS collaboration meeting in Oxford - see the picture!
- July 2011
- RFI improves with notch filters and additional bandpass filters. We’ve been increasingly concerned about the wide range of RFI near 5 GHz that appears to be getting in and contaminating large areas of our maps. Two notch filters and an additional bandpass filter have really cleaned things up (see our pictures page) and we are now confident that we can get on with the main survey.
- Spring 2011
- New secondary support improves stability of telescope! Due to some problems with our foam cone support we had to replace the old one with a new and stiffer assembly. The secondary is now carbon fibre and therefore much lighter than the original design.
- Winter 2010
- Electronics shakedown: We've been improving our system by identifying and removing pickup from various electronic components. Our data are now much cleaner and we achieving 1/f knee frequencies of ~10-30 mHz.
- Fall 2010
- Growing pains for CBASS. We’ve had a few issues with the telescope and CBASS learns the joy of "getting what you paid for" when the elevation drive for the telescope gifted to us by JPL failed. This was replaced and we're back in action.
- 8 June 2010
- The OVRO dish has recently been upgraded with an absorbing tunnel around the edge of the primary. Not only does look pretty, it helps with our sidelobe performance! Take a look in our pictures page.
- 14 May 2010
- Our FIRST MAP is here! The colour scale shows the total-power in the Cygnus region of the sky. Cygnus-A is the bright spot on the right, while the diffuse emission is Galactic emission from the Cygnus-X region and Galactic plane, which is dominated by free-free (thermal) emission.
- 22 December 2009
- FIRST LIGHT! We now have first light on the Moon with the full system! See here for proof!
- 6 August 2009
- The C-BASS receiver is now on the OVRO 6.1m dish and cold! (see the pictures page for a photo!)
- 1 August 2009
- The C-BASS receiver has just arrived at OVRO (from Oxford). We will now begin testing the equipment and begin commissioning the system on the telescope!
- 30 June 2009
- Webpage has been updated!
- 30 June 2009
- Receiver #1 is undergoing final testing at Oxford, before it gets shipped to California for the commissioning phase.
- 30 June 2009
- We are pleased to announce that the National Centre for Mathematics and Physics at King Abdulaziz City for Science and Technology (KACST) has joined the C-BASS collaboration. KACST will be funding the construction of a 2nd receiver system, designed at the University of Oxford. This will allow the southern survey to start earlier as well as to allow dual observations with 2 telescopes, which will eventually provide more sensitive maps, and better control of systematics (e.g. RFI, bad weather etc.) The 2nd receiver will be constructed at the Universities of Manchester and Oxford, with help from technicians and engineers from KACST.
Professor Rod Davies.
Installing the receiver on the C-BASS southern antenna at Klerefontein (June 2, 2014).
Northern receiver paper (King et al. 2014; March 2014).