Seshen25 report--Nov. 2004


Field System

New FS computor has been used since April this year. The FS system was updated to FS 9.7.0. 

H-maser

New MHM2010 maser was installed on April 2004, and has been used since May 2004. it works normally.

receiver

A new 13cm single polarization (RCP) receiver system is installed at the prima focus in Seshan. 
Frequency 2000-2500 MHz, SEFD not measured yet. 

A New C-Band cryogenic dual-circular-polarized front-end, which covers 4650-5150MHz frequency range,
has been installed onto our telescope. The first commissioning of this front-end is for the EVN session 3/2004.

Future

Developing Mini DBBC for Lunar project.

The L-band refrigeration dual polarization receiver system is building at ASTRON.

New S/X band receiver.

The servo system and drive system of 25m antenna will be upgraded. The should be finished at the end of 2005.