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Pressure

Some observatories have accurate information available on atmospheric pressure. If it is routinely available for every measurement, it should go in a column labelled PRESSURE, with the SI unit kPa. Note that pressures read from aneroid (dial-type) barometers are not very accurate, and probably should not be used. Only absolute pressures should be recorded, not values ``corrected to sea level''.


 
Table: Other column specifications for observational-data tables
Column Label Contents Units Variable Type Format
RAWMAG object measurement magnitudes R*4 real Fw.d
SKYRA sky measurement position degrees R*4 real F4.1
SKYDEC sky measurement position degrees R*4 real F4.1
SKYOFFSETALT sky measurement position arcsec R*4 real F4.0
SKYOFFSETAZ sky measurement position arcsec R*4 real F4.0
FILTTEMP filter temperature see text R*4 real F4.1
DETTEMP detector temperature see text R*4 real F4.1
DOMETEMP dome temperature see text R*4 real F4.1
RELHUM relative humidity per cent R*4 real F4.1
PRESSURE atmos. pressure kPa R*4 real F4.1
DIAPHRAGM field stop code   C*4 string A4
PMTVOLTS PMT high voltage   C*4 string A4
GENEVA_Q Geneva Q parameter   R*4 real E9.2
GENEVA_R Geneva R parameter   R*4 real E9.2
GENEVA_G Geneva G parameter   R*4 real E9.2
SEEING seeing value see text C*4 string A4
ESTERR estimated error see text R*4 real Fw.d
 


next up previous contents
Next: Measuring aperture Up: Additional information Previous: Temperature and humidity data
Petra Nass
1999-06-15