// OSLO 6.2 53078     0 26134
LEN NEW "Bk7 F4 Achromatic Doublet" 1277.3 5
EBR  50.8
ANG  0.0000572957795
DES  "OSLO"
UNI  1.0
// SRF 0
AIR 
TH   1.0e+20
AP  9.9999999995e+13
NXT  // SRF 1
GLA BK7       
RD   1016.0
TH   18.8239
NXT  // SRF 2
AIR 
RD   -516.80292
TH   2.0
NXT  // SRF 3
GLA F4        
RD   -1923.46912
TH   15.0
NXT  // SRF 4
AIR 
RD   1503.20471
NXT  // SRF 5
AIR 
TH   1238.5231066600929
CBK  1
WV 0.58756 0.48613 0.65627
WW 1.0 1.0 1.0
END  5
SDAD 32.0