#------------------Slit info ------------------
# This info is needed to calculate how far the center of the slit
# is away from the limb. Wwe are assuming the edge of the slit
# is placed on the limb of the planet (theta = 90)
The distance Venus is from EARTH (NOT SUN) is listed in AU and 
will be converted to km in the code. Using the distance and slit size
in arcsecond, the slit size in km on the planet is calcualted.
the  
calculating the area on the planet that the slit covers, the 
longitudinal angle is calculated



# Delta		Slit		Slit	   Slit Angle	
# (AU)		Width	   	Height	   on Venus	
#		(arcsec)  	(arcsec)   (degrees from
#		                            ecam horizontal)
#----------------------------------------------------
0.4595		1.6		3.2          45
0.4595		1.6		3.2          45
0.4595		1.6		3.2          50
0.4595		1.6		3.2          50