Sounds good
Two years ago (time flies!) I was scanning the sky on 1420MHz (link is
here).
For each frequency band scan I used timestamp, frequency (actually position on the screen) and recorded level. Other parameters (Ref level, VBW, RBW, CF) were rrecorded with each scan readout
IMO, this was enough to construct the 21cm map of the southern sky..
Some results are presented below:
http://www.iceinspace.com.au/forum/s...4&postcount=74
I definitelly managed to observe the rotation of Milky Way
At firs I was considering Skypipe as a recording device but abandoned the idea mainly because I needed to build detector, ADC.. and I already had all that in a form of Spectrum Analyser (and associated HPIB controller).. so my approach at the time was much faster.
I would very much like to go to the next level with this work (motorization of the antenna, sky scanning..) but my experimental setup was simply too expensive (power bill).
Your work is giving me a new hope for cheaper gear and much easier data processing.