Atmospheric Dispersion
CALL sla_ATMDSP (TDK, PMB, RH, WL1, A1, B1, WL2, A2, B2)
TDK  D  ambient temperature at the observer (K) 
 
PMB  D  pressure at the observer (mb) 
 
RH  D  relative humidity at the observer (range 0 – 1) 
 
WL1  D  base wavelength ($\mu m$) 
 
A1  D  refraction coefficient A for wavelength WL1 (radians) 


B1  D  refraction coefficient B for wavelength WL1 (radians) 


WL2  D  wavelength for which adjusted A,B required ($\mu m$) 
A2  D  refraction coefficient A for wavelength WL2 (radians) 


B2  D  refraction coefficient B for wavelength WL2 (radians) 
height above sea level  2000 m  
latitude  $2{9}^{\circ}$  
pressure  793 mb  
temperature  $29{0}^{\circ}$ K  
humidity  0.5 (50%)  
lapse rate  $0.006{5}^{\circ}{m}^{1}$  
reference wavelength  $0.4\phantom{\rule{0.3em}{0ex}}\mu m$  
star elevation  $1{5}^{\circ}$  