CALLISTO status report #14

To:
Arnold O. Benz	ETHZ	benz@astro.phys.ethz.ch	
Tim Bastian	NRAO	tbastian@nrao.edu	
Richard F. Bradley	NRAO	rbradley@nrao.edu	
Erin Mastrantonio	NRAO	emastran@nrao.edu	
Peter Messmer	TXCORP	messmer@txcorp.com	
Hansueli Meyer	ETHZ	meyerh@astro.phys.ethz.ch	
Frédéric Clette	ROB	frederic.clette@oma.be	
P.K.Manoharan	NCRA	mano@wm.ncra.tifr.res.in	
N. Gopalswamy	NASA	gopals@fugee.gsfc.nasa.gov	

From:
Christian Monstein	ETHZ	monstein@astro.phys.ethz.ch	

Software spectrometer controller (host)
•	New and inserted
1.	File size of FITS files finally reduced to 8bit per receiver
2.	Spectrum overview (Button overview) will be stored in a separate ASCII-file
3.	Version management now within Info.cpp (Info-panel)
4.	Operating manual + Hints&Tricks merged to one single document, see: http://www.astro.phys.ethz.ch/instrument/callisto/Appdocs/CallistoOPmanualV201.pdf
5.	Host software highly simplified, download at: http://www.astro.phys.ethz.ch/instrument/callisto/Appdocs/20060425.zip

•	Old and deleted
1.	TRH modul and data for external temperature- and humidity sensor 
2.	GPS modul, longitude, latitude and height are constant and now part of cfg-file
3.	FPU modul, because the requirements from user side are too different….
4.	measurementmode = 7 (auto-exit) because it’s too dangerous
5.	observationmode because the requirements from user side are too different….

Hardware spectrometer

1.	Simplification of RISC software still in planning phase
2.	Components available for production of  at least 5 new spectrometers

Calibration
1.	Still in experimental phase, no “easy” solution due to 
a) insufficient gain of the antennas
b) too much rf interference

AOB
1.	New spectral overviews (base band) are available: 
http://www.astro.phys.ethz.ch/instrument/callisto/RFSPEC2/Balzhofen/spectrum74.htm 
http://www.astro.phys.ethz.ch/instrument/callisto/RFSPEC2/Freienbach/spectrum75.htm
http://www.astro.phys.ethz.ch/instrument/callisto/RFSPEC2/Ottoberg/spectrum76.htm
http://www.astro.phys.ethz.ch/instrument/callisto/RFSPEC2/Court/spectrum77.htm
http://www.astro.phys.ethz.ch/instrument/callisto/RFSPEC2/Diavolezza2/spectrum78.htm
http://www.astro.phys.ethz.ch/instrument/callisto/RFSPEC2/Lenzerheide/spectrum79.htm

2.	Older status reports are available under: http://www.astro.phys.ethz.ch/instrument/callisto/Appdocs/applicabledocs.htm

IHY
1.	Spectral overview planned for May 23…24 at Humain station Belgium
2.	Delievery of 1 Callisto to Ooty (Tamil Nadu, India) in planning phase