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