Just a short note on my trials to capture water masers.
I use the Norsat 9000LDF; however it uses a DRO for the LO; so it drifts with temperature. I tried to stabilize it by adding a linear thermostat. Not an on/off version, but one that adds power in a linear way.
I have given up trying to control the temperature over 24H when the temperature varies between 16 and 40 degree air temperature. When the solar rays hit the feed, the temp will rise even more.
The LNB consumes about 2W and the temp control adds 0 upto 5W during the evening cool down.
Also I extended the frequency range of the capturing process. As an example; W49 has an extended velocity range; that means that in the young stellar object a lot of high velocity movements are present.
You can check this by looking into the maser dbase; https://maserdb.net/
and search for W49.
Some results show VLsr of -100 to +100 km/s.
This cannot be captured with a 2,4MHz wide dongle.
So I wrote a python script for frequency hopping. Advantage is that the signal is always present, you just pick a section of the range and integrate; then the next section.; etc.
Attached is 12MHz wide plot.
Remarkable is; the peak at -5km/s is gone. Before anyone thinks something alien, an explanation is that this is a masing cloud circulating a protostar (a warm blob); it could be detected again after a complete rotation.
I will add a project tab again to parac,eu and give more details and downloads.