// OSLO 6.3  1105     0 21538
LEN NEW "Parabolic mirror" -4000 2
EBR  500.0
ANG  0.11
DES  "OSLO"
UNI  1.0
SNO1 "This is a parabola for a large telescope. You can experiment"
SNO2 "with the conic constant of the primary mirror to see how much it needs to be"
SNO3 "changed to produce 6 waves of OPD. Then refocus to see how well you can"
SNO4 "compensate for the error."
SNO10 "TELESCOPE"
// SRF 0
AIR 
TH   1.0e+20
AP  1.919864536e+17
NXT  // SRF 1
RFH 
TCE  236.0
RD   -8000.0
TH   -5000.0
AP  500.0
CC   -1.0
NXT  // SRF 2
AIR 
TH   999.9999999999995
CBK  1
WV 0.6328
WW 1.0
END  2
DLHA 200
DLRS 3
DLNR  0 10
DLNR  2 10