David Morgan 2W0CXV has released several papers covering the use of the RTL-SDR Dongle in radio astronomy.
In 2011 David described the equipment configuration and software involved in setting to work a small 3m diameter amateur radio telescope using the FUNcube Dongle Pro software defined radio receiver.
At the end of 2014 he published a paper dealing with the setting up and use of a RTL-SDR dongle to receive meteor pings from the Graves Radar on 143.050 MHz.
Download David’s papers from http://www.dmradas.co.uk/Downloads.html
You can join the BAA Radio Astronomy Yahoo Group at