Onsala Space Observatory - IVS Technology Development Center

We report 2012 activities and plans for 2013

Onsala Space Observatory – IVS Technology Development Center Activities during 2017–2018

We give a brief overview of the technical development related to geodetic VLBI done during 2017 and 2018 at the Onsala Space Observatory

Sensitivity simulation and measurement of the SKA Band 1 wideband feed package on MeerKAT

Advances in wideband feed technology for radio telescopes enable high sensitivity observations over large bandwidths. The wideband quad-ridge flared horn (QRFH) feed package for Band 1 of the Square Kilometre Array (SKA) was optimized for high sensitivity. The 3:1 feed package covers 350-1050 MHz and is a complete room temperature system with low-noise amplifiers integrated inside the ridges of the horn. The QRFH is dual-linear polarized and designed with spline-defined profiles for the horn and ridge shape. Measured feed s-parameters show input reflection less than -11 dB across the band with good port isolation. In this paper we present the first measured sensitivity levels of the Band 1 feed package, which was tested on the SKA precursor reflector MeerKAT. We also present measured aperture efficiency and intrinsic cross-polarization (IXR). The measured results show good agreement with simulations

Status of the Onsala Twin Telescopes – Two Years After the Inauguration

We give a brief overview on the status of\ua0the Onsala twin telescopes (OTT), two years after their\ua0inauguration. The dierent components of the VGOS\ua0systems are briefly described, and the development towards\ua0routine operations

Onsala Space Observatory – IVS Technology Development Center

We report 2012 activities and plans for 2013

Onsala Space Observatory – IVS Technology Development Center

We report 2012 activities and plans for 2013