Hercules A

Hercules A
Radio-Optical View of the Galaxy Hercules A - Many thanks to: NASA, ESA, S. Baum and C. O'Dea (RIT), R. Perley and W. Cotton (NRAO/AUI/NSF), and the Hubble Heritage Team (STScI/AURA)

Sunday, July 31, 2011

Io-A on 110730; non-Io on 110731


 My thanks to Paris Observatory

M9.3 flare on 110730

SDO AIA 171 angstrom, 2 frames from this: Lockheed Martin Solar Laboratory movie

Friday, July 29, 2011

Nancay Decametric Array real time solar spectra on 110729

My many thanks to Laurent Denis and the Nancay Decametric Array Team

Full real time  display example

Wednesday, July 27, 2011

Multiple type III and one type II burst on 110726

My thanks to the STEREO Team

Type II (slow negative drift) following type III

Monday, July 25, 2011

Strong non-Io Jovian activity on 110724

My thanks to the STEREO WAVES Team

The drawing below shows part of the STEREO WAVES antenna system (designated by red arrows). The 3 monopoles are orthogonal and about 6 meters long.  

Saturday, July 23, 2011

Non-Io at Nancay on 110722

15 minute time ticks.

My thanks to Paris Observatory.

Paris Observatory Magazine #13:

Tuesday, July 19, 2011

10 meter RadioAstron Russian space radiotelescope is in orbit

The Spectrum-R space observatory was launched from the Baikonur Cosmodrome on 110718:

The telescope dish is made from 27 carbon fiber petals. It will operate as an interferometer together with ground antennas.

RadioAstron home page:

Russian Federal Space Agency:

Saturday, July 16, 2011

Io-D on 110713 and non-Io arcs on 110714

 STEREO WAVES Io-D   110713

STEREO WAVES  non-Io arcs  110714

Many thanks to the STEREO WAVES Team

Tuesday, July 12, 2011

Type II with fundamental and second harmonic at Nancay on 110711

Preceded by a  C2.6 flare from active region 1247

X-ray and Proton flux from the flare
Lockheed Martin Solar Laboratory

Many thanks to the Nancay Decametric Array Team

Monday, July 11, 2011

Whitham D. Reeve's wonderful panoramas of the Long Wavelength Array and the EVLA

click images for enlargements

Long Wavelength Array first station near the EVLA center and the Antenna Assembly building

Related posts:



See also Whit's Radio Science and Radio Astronomy pages:


My thanks to Whit !

Thursday, July 7, 2011

Good Io-C at Nancay on 110707

Close to pure Right Circular Polarization, not generally expected for Io-C, generated by southern Jovian magnetosphere cyclotron masers. Io-A and Io-B are generated by northern magnetosphere masers; Io-C and Io-D by southern magnetosphere masers. In 5 years time, I hope Juno flies through some of those masers.

click image to enlarge

Friday, July 1, 2011

Nice Io-B on 110701

click image to enlarge
My thanks to Paris Observatory and the Nancay Decametric Array Team