- a closup view of the Cassegrain feed ( 58k ) and corrugated feedhorn assembly
- photo taken during initial pointing calibration( 66k ) using the sun ( SERIOUS overloading problems ! )
- general view of antenna pointing towards Taurus A ( 56k ), nothing logged ( yet ! )
- the backends of the two 11 GHz radiometers inside the control room ( 69k ) with strip chart recorder and digital scope
- typical scope display ( 66k ) of the switching signal and noise levels of cold sky vs. reference temperature
- still lots of work to do, but so far the sun, moon and Cassiopeia A have been logged !
- additions next time: cold sky as cold reference, feed losses down by about 1 dB, digital antenna tracking and control
- this should result in 60 mK radiometer resolution ( 10 sec. integration ) with an antenna sensitivity of ~2.4 mK/Jansky
