The 5m dish with a crossed logarithmic periodic antenna at Bleien observatory (west) covers 1 GHz - 5GHz
The feed is currently connected to PHOENIX-3 in LHCP and RHCP.
The time resolution is 200 msec, Frequency resolution down to 60 KHz. In total 131'072 channels maximum.
Nominally, we integrate by a factor of 8 to a bandwidth of ~480 KHz. During the automatic calibration process,
nominally 40% of the channels are deleted to get rid of local radio interferences. Only FIT files with
flares are archived, all other files are automatically deleted. This, due to the fact that we can not
transfer and store Gigabytes of noise every day.
If the displayed unit = ADU then it represents analog-digital units from the internal ADC (-> not calibrated)
If the displayed unit = SFU then Callisto is calibrated, but shows only S/2. You have to add them: S_total = S_lhcp + S_rhcp
Currently the Hybrid coupler in the FPU is bypassed. Therefore polarisation mode is linear instead of circular.
Last calibration (cold sky and quiet sun): 20100107
FHNW Home | Environmental data Bleien observatory | Status Phoenix-4 and Callistos | Status ASSERT
Last change: August 13 2013, ©Institute for Astronomy ETHZ