Sonntag, 27. Februar 2011

Installation #20 Birr castle Ireland







2nd installation of a low frequency Callisto at Birr castle, Ireland. Instrument will be operated by Trinity College Dublin.

Peter, Pietro, Joe, Eoin and Christian were working very hard to get everything running within two days...
We already got 1st light on February 27th 2011, it is a type III flare going down to about 30 MHz. Data access here: Rosseobservatory.

Below a video (9.34MB) about positioning the logarithmic-periodic antenna to the sun.

Samstag, 19. Februar 2011

Installation #19 Anchorage Alaska USA


























































Top: First light in Alaska on Feb. 15th 2011 at ~02:00UT.
It shows a type IV solar radio flare which was connected to a strong x-ray flare X2.2
System was built, tested and will be operated by W. Reeve Anchorage.
FIT-files are automatically transferred to a shared FTP-server.
Middle: Logarithmic-periodic antenna on the roof, tracking the sun.
Bottom: Control-PC and Callisto (right on the table).

Link to an article in Nature about e-Callisto network of Feb. 17th, 2011.
Link to an interview in Swiss news SFDRS of Feb. 18th 2011.

Samstag, 13. November 2010

Installation #18 at Space Weather Monitoring Centre Helwan, Egypt































Top: Callisto radio spectrometer at SWMC Helwan university Cairo, Egypt
Bottom: Spectral overview in the SWMC office taken with an omni-directional antenna (no preamplifier).
Plot produced with IDL.
Installation during 1st ISWI-meeting in Cairo

Freitag, 17. September 2010

2nd generation of Callisto


Prototype of printed circuit board Callisto based on NXP tuner CD1316L/IHP-3.
The original tuner CD1316L/IV is no longer available. Unfortunately also the firmware in RISC-processor ATmega16 had to be adapted.

Freitag, 10. September 2010

Installation #17 at Metsähovi observatory, Finland





















17# Callisto installation at Metsähovi Radio Observatory in Finland took place 1st of September until 3rd of September 2010. Access to on-line data and lightcurves via web-interface here:
http://www.metsahovi.fi/callisto/
The logarithmic periodic antenna (DBV-T) is attached to the rim of a microwave telescope dish that observes the solar radio flux at 11 GHz. Picture taken by Juha Kallunki MRO.

Freitag, 13. August 2010

Report about Callisto production at ETH












More infos here:
http://www.ethlife.ethz.ch/archive_articles/100809_Messgeraete_cho/index
Picture taken by Heidi Hostettler, ETH

Mittwoch, 23. Juni 2010

1st light (type 1 flare) at OSRA Czech Republic

First light at OSRA on June 12th 2010. Plot shows a typical noise storm in VHF-band.
This type of flare shows strong circular polarization.